Replace second occurrence string java. But the second string does not, so we skip it.

Replace second occurrence string java length()) Next, let’s implement this approach and test with our INPUT string: I have some data in the following format: MM:ss:mmm where MM is minutes, ss is seconds and mmm is 3 digit milliseconds, like:. His suggestion will work in most cases: myString. you have to replace [A-Z] by the appropriate regex. replace() method in Java is a powerful and versatile tool for replacing characters and substrings within a string. I am aware of replacing the first occurrence of the string. The String. Follow edited Apr 8, 2016 at 10:23. Mark Francois (Rayleigh) (Con): If the scheme was so poorly targeted, why were the Government about to roll it out to employees in the Department of Trade and Industry and the Department for Work and Pensions on the very day Others have already stated the correct method of: Escaping the + as \\+; Using the Pattern. find(sub) # If find is not -1 we have found at least one match for the substring i = find != -1 # loop util we find the nth or we find no match while find != -1 and i != n: # find + 1 means we start searching from after the last Just get the last index and do an in place replacement of the expression with what you want to replace. Regex is a very interesting way to search for patterns in a String that the user provides. indexOf to find all occurrences of a word in a String. You want (1) to find the most occurrence string which you don't know or you want (2) to replace the occurrence string that you know? The most naive way to do (1) is to chop your text by space and put them in a string-to-integer HashMap to calculate the most occurrence string. JavaScript: replace last occurrence of text in a string. You just need to avoid one of the most famous performance killers in all of Java - repeated string concatenation. indexOf("remove") means, you are searching for the (fixed) STRING remove, not for the value of the String named remove - which is most likey not, what you want to do. 7. In my case those strings will always have either one or two characters between them, resulting in the following regex: I don't think you need anything particular from Java 8 here. The charAt method in Java is a fundamental As noted in the comment below by @ThomasLeduc and others, there could be an issue with the regular expression-based implementation if search contains certain characters which are reserved as special characters in regular java; string; replace; or ask your own question. 73. I want to remove a pattern with sed, only at second occurence. open a FileReader for the original file. with a <space>. In order to replace all line breaks from strings replace() function can I am writing a bash script and I want to find a certain string and replace the entire line but on the second occurrence. the result of the above string pairs is: Hello c'Lint and dear Bob. Here's what I'm currently using and it works, but I would like to Polynomial. Get index of 3rd comma. Set has a boolean property on add(), which returns false if the value is already inserted into the set. sed command to replace second occurrence not working to me. Like this: First replace all the newlines with a unique character that does not occur anywhere else in your file (e. Sorry if my question is foggy, it's not that easy to explain. 1, 11. 2 , but it makes 1. Returns. Ask Question Asked 9 years, 7 months ago. This one can be replace with a string instead of a character. and the x is to increased every occurrence of L. Java regex for replaceAll. Replace last char in a string. say . Just add your string where u want to replace string in s and in place of "he" place the sub string u want to replace and in place of "mt" place the sub string you want in your new string. how to replace only one word in EditText. println Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company You replace using regular expressions with String#replaceAll. Replace nth occurence of a character by another. The replace() method returns a new string where each occurrence of the matching character/text is replaced with the new character/text. The original question was about detecting the last occurrence of one String in another String. So for example, with s = "aabbcdbb", and array string "aabbbdbb", you can Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I have a situation where i have to replace first 4 characters of a string to 'x'. Approach: Create a data structure such that you can guarantee only unique values are ever inserted into it. How to implement the same using Java? or Is there any methods available in Apache commons StringUtils to Java: replace multiple string patterns from one string value. I have this code of a very basic hangman type game. The problem consists of checking whether all occurrences of a character can be replaced with a different character in the string s, not the string in the array. You can now build the result using input. To fix your solution, you can replace the call of replace with a composition of three substrings: from zero to last_index; s5; from last_index+4 to the end. replace() method in Java is used to replace occurrences of a specified character or substring with another character or substring. Here The first string contains HTML, so we call replace() on it. NullPointerException: if the replacement or target is equal to null. Enter a character to be replaced: P Enter a new character to place: Q After replacing the last occurrence of ‘P’ with ‘Q’ = I love Coding. string2="dear" I want to Compare the strings and delete the first occurrence of matching substring . lastIndexOf(String str), then call input. the in a loop call readln(), check for null, replace("\t"," ") and write on the appropriate objects. hisher_member_id} class should be java. – Joachim Sauer. , *, + among many others) are treated literally in the character class. . Problems with a word guessing game. Sometimes, the input can contain the same text multiple times, but we only want to replace the last occurrence. target: target sequence of characters. I'd like to replace all occurrences of 2 consecutive commas (",,") by a marker in between, but I've found that I can't replace the second occurrence. Share. text <- c("Mr. community wiki 4 revs, 2 users 81% Petter Friberg. Improve this answer. Example 1. Syntax: public String replace(char oldch, char There are two types of replace () methods in Java String class. replace is the most terse. How to remove nth character from the string? 7. I want to replace all occurrences of single quotations with two quotations, except in first and last occurrence, I managed to get to exclude the last occurrence using regex as follows String toRep Not as elegant perhaps as other approaches but it's pretty solid and easy to follow, esp. This method also allows you to specify the target substring using the regular Just use String. I'm currently building a config file that will replace a given string with multiple variables, I'm having a hard time explaining it so perhaps it would be best to show you what I mean: The following there is a function for this called replace. You can replace all occurrence of a single character, or a substring of a given String in Java using the replaceAll() method of java. 0. quote method which escapes all the regex meta-characters. oldString - The string or I am having a string like this "Position, fix, dial" I want to replace the last double quote(") with escape double quote(\") The result of the string is to be "Position, fix, dial\" How can I do this. replaceFirst(value. After one instance of ";null;" is replaced by ";;", then both of the semicolons are already processed, so that the second ; cannot be considered as the start of another replacement for the next ";null;" occurrence. How to replace all but 2 consecutive repeat Currently you're replacing every instance of'ven' with 'venky' if your string contains a match for ven, which of course it does. I am full aware that strings are immutable and can't be changed and can be "editabile" - ohhh the controversy! So I am trying to get it so that without the replace() method for strings in java, to implement where a specific char in a string gets switched out with another char. Java - counting letter occurrence in a string using IndexOf. Many of the regex meta characters (. Removing the last character from a string. g. What I don't like is that you repeat blocks of code in a way that makes the maintenance a problem. Then just replace whatever index you want with the new desired value. replaceAll("([a-zA-Z])\\1{2,}", "$1")); Help is required to find out A. Commented Apr 14, 2023 at 11:53. You have to pass the actual character/substring. lastIndexOf(String str, int fromIndex), passing in the value from the first call. Add a comment | Multiple replace option for a string in java regex. Monday 02 January 2017 I have created one regex which gives me the last two character of second word in a string, but am not sure how to replace them with nothing. To better explain, this method replaces the string exactly how I want it: (Edit: I changed the regex based on Avinash's response, still looking for a faster alternative as the regex replaceall is still slow) C# - indexOf the nth occurrence of a string? Get the IndexOf the first occurrence of the string. Need to Replace every second instance of delimiter "/" with ":". pre- and postincrement both behave like preincrement. Viewed 153 times -1 I have a string which needs to be replaced by occurrence. I want to replace to 'xxxx5678'. replacement: replacement sequence of characters. Problem is I can not replace all but two repeated consecutive characters. replace() (that Op De Cirkel is mostly right. replace a combination of string only once using sed. Here is what I want, remove a pattern but on second occurrence. substring(0,str. The first is. However, what I wrote works in 'sed', 'ed', 'vi', 'vim', and Perl. The positive lookahead ensures that it only splits when it does not see another occurrence later in the string. replace(". W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Replace nth occurrence javascript. String elephant = "elaphant"; I tried using String. Replace every second occurency of a substring, Java. Use bigString. replace(bowlNumber. O I'm looking for the starting position of nth occurrence, in this case the second. All forum topics; Previous Topic; Next Topic; 1 Solution Accepted Solutions Java - String replace exact word. text = text. Obviously, you also can pipe the output of a previous command through that. it will add to selected buffer text placed between current match and previous match (or start of string for first match),; after that, it will also add replacement for current match (which can be based on it). Here it is 10. The second replace () method is added since JDK 1. Java String: Replacing string with replace first occurrence of string after another string. group() and the call àppendReplacement` with different second parameters based on what is returned. How The second argument of "indexOf" asks for a start point. Replace(String, String, MatchEvaluator). Hot Network Questions You can use a positive lookahead in your regex to ensure it only splits on the last occurrence. indexof(smallString) to get the index of the first occurrence of the small string in the big one (or -1 if none, in which case you're done). Ask Question Asked 6 years, Viewed 1k times 1 Trying to figure out what's the best way to insert a line break after the second comma in a string. Commented Jan 23, 2013 at 13:02. Replace last numbers from a string. Maybe you should post that as a different question, now that you've solved the matter of finding the last When finding occurrences, it does not see yet what you replace the pattern with, and thus it doesn't see that new occurrence of ",382," is generated when replacing the first occurrence is replaced by the comma. I tried the following solutions: Sed replace at second occurrence; Sed/Awk to delete second occurence of string - platform independent; sed: How to delete second match in a file. Concat it back together with the "2" character. 05:23:236 I'm trying to replace the second occurrence of the colon with a dot: 05:23. replace() Use replace() if you just want to replace some char with another char or some String with another String (actually CharSequence). How to Remove string after second last occurrence of special character? 0. This can be manipulated if we break input string separated by "/" and construct output string based on that but need to find the simplest way to do this. In order to be able to process I'd like to replace the first occurrence of a : in a string (which is my marker, that a speech begins). Java String get multiple index values. A simple solution leverages Apache's StringUtils. e. s1 = "2999. How to replace first occurrence of string in Java. It also searches backwards from the specified index 1, so it will only look at everything before and including the character at index 1. For example: # randomtext 9876 randomtext 9999 I want to replace the 2nd occurrence of "randomtext" with "randomtext 123". I have a string like below. This is the code I have written which takes input and returns the matching occurence: References. results() with a single line of code. prototype object and takes in a string str, a character char and a number n. replace("very", "not very", 1) The third parameter is the maximum number of occurrences that you want to replace. The length of the new String is a function of the charset, and hence may not be equal to the length of the byte array. str = str. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Replace String in occurrence using java. ; Another method that you can use is to put the + in a character class. Java - String replace exact word. Thanks in Advance I want to replace every second occurrence of ", (DoubleQuote comma) with ". 1; bowlNumber. input: "HELLO WORLD" output: "HExxxO WORxxxD" returns "1001" string. public static long countOccurrences(String Given a string, write a Java program to replace all line breaks from the given String. Whether you are replacing characters, Constructs a new String by decoding the specified array of bytes using the specified charset. oldChar: old character. My Code: String value="EMPID Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company If you are looking for something which takes in a sentence and replaces the first occurrence of "string" after "here" (using the example in your case), Concatenate the part before "here" in the original string, "here" and the new string for the second half of the original string and that will give you what you are looking for. 00_GRB_1" and s2 = "my File. Inside the while loop simply inspect the return value of m. charAt(0)s would probably need to be replaced with No need for jQuery nor regex assuming the character you want to replace exists in the string . I'm using a regex to detect all the matches of the character that I'm looking for. static String replaceSecondLast(String input, String search, String replacement) { I want to replace the last ". 4. results() You can find the number of occurrences of a substring in a string using Java 9 method Matcher. txt" with "_txt" The result of the String should be . 190 or 1. replace(CharSequence,CharSequence) rather than replaceAll. String output = input. So the final output should be like this: # randomtext 9876 randomtext 123 I have an ArrayList that houses a series of notes in the form of "take out the trash", "do the dishes" etc. Then pass it to sed and tell it to replace the nth occurrence of your string. From the documentation for Python: string. I have changed the characters to "-",I am able to get the indices of the input but I am not able to convert back the "-" to the characters entered. Say I have a string, and I want to change the second "a" in that string to an "e". Shoe. you want "a|e|b|c|d"; To achieve that you could split your string at the pipe, collect the elements into a LinkedHashSet Matcher. How to replace second occurrence of a character in string Hi , I have a table called "Technology Versions". How to find index of whole word in string in java. Replace Last Occurrence of a character in a string. Finding second occurrence of a substring in a string in Java. 111. Different languages use different notations for regular expressions, so the detailed answer depends on the target language. find to find the nth occurrence if it exists and use that position to create the new string:. After that the two lines are written to the standard output and a new cycle of sed begins. regex replace every 2nd occurrence with Javascript. count() to obtain the number of elements in the stream. 1 to 2. 1. Likewise, from the 2nd occurrence of . txt_txt" How can I do this. Replace all occurrences of the character x with o. Ask Question Asked 11 years, 3 String uppercase = s. – Adam Halasz. Ask Question Asked 7 years, 6 months ago. Whether you are a beginner starting Java programming or an experienced looking to brush up on your Java skills, this tutorial will provide you with a deep understanding of the replace function and its uses in Java. Replacing a character in a string when it is single. What I assume you're trying to do is to substitute 'ven' for 'venky' within your string if it's the second element: To achieve a global replace (replacing every instance of colon with underscore) you'd add a qualifier (often 'g') after the substitution. replace("ha", "gurp") doesn't work, as it replaces all "ha"s. replaced string. Substring it into two strings at the appropriate index of the "1" character. substring to get the pieces of the big string before and after the match, and finally concat to put those before and after pieces back together, with your intended replacement in the middle. - N will pull the next (second) line into the pattern space and - `s/4s/3s/2' will then replace the second occurrence of "4s" in the pattern space with "3s". 12 or 2. println(data. Here's a convenient way to do it. I think it is the best, because it uses the Java methods as intended rather than trying to reinvent the wheel. You can use the split method on your String to break it into its tokens with a given delimiter. String str = "P. String replace in java is done by methods: * replace() - it's using a normal replace * replaceAll() - it's using regular expression The difference is not that the second one replace all and the first replace only 1 occurrence . but don't I have a String called persons. Improve this question. replace("\t"," "); to do this with a file create a temp file and open a FileWriter for it. length-1), 2); By this I am able to replace my last character i. those. What's in the file. For example if you want to replace the second occurrence of "_" with "A", then: String theLetters = "_ _ _ _ _\n"; String replacedText = replaceOccurrence(theLetters, "_", "A", 2); Result: _ A _ _ _ To replace the nth Occurrence String we have developed 2 methods in the above example:- replaceNthOccurance () and indexOfNthOccurrence (). Replace the last occurrence of a Substring in a String in Java. This method always replaces malformed-input and unmappable-character sequences with this charset's default replacement string. The logic of the code goes as follows:- We will iterate through the loop until the length of the string becomes 0. 48. csv: I have a string in which I want every occurrence of §a except the first one to be removed and the same goes for §b and §c. You should just omit the second argument if you want to search the whole string. Finding the index of occurrence before the last occurrence of a string. String class. Calling replace with that string as the argument will perform the replacement throughout the entire string, so it would replace both occurrences. It has two forms. replace() The second signature replaces every occurrence of the target substring (represented as a CharSequence) with the replacement substring. But the second string does not, so we skip it. Would 1/4 inch coating of tungsten burn off while re-entering atmosphere at 36,000ft/second? Replace nth occurrence of string. If a unique value is inserted into it, then it's fine to keep building out your return string How do I find the second index of a character in a string. 1" with "_1" and ". split Finding second occurrence of a substring in a string in Java. String substring(int FirstIndex) Here, FirstIndex specifies the index at which the substring will begin. It iterates over each character of the input string and builds up a set of characters seen so far, building up an output StringBuilder with the current character or its replacement if the current character has been seen already. println("uppercase "+uppercase); String replace = uppercase. – Jon Skeet. Java - Get substring from 2nd last occurrence of a character in string. Commented Jul 31, 2014 Java replace only first occurrence of a substring Before Java 9. lang. I'm trying with some methods but I've failed. myWord is the original word sayAABDCAADEF. One of the most efficient ways to replace matching strings (without regular expressions) is to use the Aho-Corasick algorithm with a performant Trie (pronounced "try"), fast hashing algorithm, and efficient collections implementation. So, from the start of the string to the 2nd occurrence of . Regex (regular expressions), replace the second occurence in javascript. The function should remove the nth appearance of char from str. "With all my will, but much against my heart" Help with regexp replacing every second comma in the string. I did a function that you can use easily :) A demo here to understand the regex Replace fourth occurrence of a character in a string. but the problem is as my first character is also 1 , it also changes that to 2. replace("a", "e"); Is there any loop or method I can use to accomplish this? Thank you all. What i want is to change 1. e 1 to 2. This method only replaces the first occurrence of the string found. The substring begins at the specified start and extends to the character at index end - 1. String. 0 remove parts of string. replaceAll("\\p{C}", "?"); But if myString might contain non-BMP codepoints then it's more complicated. 4. RegExp : How to replace the second occurrence using object? 0. To find the second last index, first call input. It allows you to avoid using replace completely if you set it up right as well. out Second for replacing the second . Example: Return a new This method returns a new string resulting from replacing all occurrences of old characters in the string with new characters. to the end of the string would return "that". Modified 7 years, If you only want to replace the first occurrence, there is a method replaceFirst in String object. This means that it only checks t and h. then close the reader and writer and delete() the original file and rename() the temp file to java; string; replace; Share. 3. How we can replace the text which is in between the second and third occurrence of "_" with some other text. " (Dot) E. Javascript Regular Expression to replace only multiple occurrences with that substitute. contact_id. I want to do this as simply as possibly without needing to import any util or use arrays. with /*/ i. split(delim); elements[0]= "D"; String result = ""; for (String token : elements) { result += token + delim; } System. replaceAll("[a-zA-Z]","@"); If you want to replace all alphabetical characters from all locales, use the pattern \p{L}. It could be done like this: value. thus far, Another option is to loop through the string rather than the dictionary, then just check each character in turn, replacing if they need replacing. 1, 8. You need to do this in order to create a single string for sed. This guide will cover the method's usage, The String replace() method returns a new string after replacing all the old characters/CharSequence with a given character/CharSequence. Matches(), which returns a MatchCollection, and check the index of the item: index % 2 != 0). 34. e my output will be persons/*/name I tried this code: How to replace a String in java which contains dot? 1. Replace character in a string. Your question is not very clear though. In this article, we will discuss how to replace the first occurrence of a String using regex in Java. \p{C} contains the surrogate codepoints of \p{Cs}. Is there any way to expand this code to replace the w Second of all, in order to replace multiple occurences, you should have a loop. 76. This method has various use cases, from The String. After you are done iterating check if the second String is now empty, which will tell you if all chars from the first String where found:-- If it's in the string, recurse on the the part of the string before the occurrence, and on the part of the string In both C# and java a string is a sequence of UTF-16 You can always replace it with a word you are sure will appear nowhere else in the string, and then do the second replace later: String word1 = "bar Actually, you are asking a whole different question now. How to replace or convert the first occurrence of a dot from a string in java. Hot Network Questions Cisco control and management plane interfaces In your file, the second occurrence is on the second line so what you need is this: sed '2s/line/LINUX/' mytextfile To edit the file in-place: sed -i '2s/line/LINUX/' mytextfile The 2s is to make the change on the second line. 2. Parameters. charAt(0). The alert returns the same initial text. What is the most efficient way to achieve this? replacing a character every occurrence in a string in java. The second replace() method is added since JDK 1. How to replace second occurence of char in a String? (Java) 3. name I want to replace the DOT . 6. This is somehow a duplicate of this problem Ruby - replace the first occurrence of a substring with another string just in java. One thing that gets me about the String class is this: It's been around for a very long time and while it supports a global replace with regexp and a global replace with Strings (via CharSequences), that last doesn't have a simple boolean parameter: The straightforward approach to solving this problem is given in another answer. Finally, pass the output back through tr to recreate the newlines. To replace the nth occurrence string In Java, the String. replace() method is a simple yet powerful tool for transforming text by replacing characters or substrings within a string. How to remove first and last character in a string in Java? Hot Network Questions Is it possible to do multiple substitions in Visual select mode? I am having a string with the format as abc_1234_01233456_DC . def nth_repl(s, sub, repl, n): find = s. If you want to find the occurrence to replace it, use one of the overloads of Regex. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company replace second occurrence of comma with line break in string. newChar: new character. What you can use is a pattern that doesn't I am trying to replace the last char in my String . See the below code in action here. replace(s, old, new[, maxreplace]) Return a copy of string s with all occurrences of substring old replaced by new. Follow edited May 23, 2017 at 11:52. substring(int beginIndex). The original data is '12345678'. In Java, the String. It consists of some patterns that can be planned and modified according to the usage of the program. Let’s say we have this String: final static String INPUT3 = "The first word, the second word, the last word should be replaced. Ask Question Asked 10 years, 6 months ago. For n=2, the command is: The first occurrence of the $? has to replaced with "there" and second occurrence of the $? has to replaced with "world". NB: replace doesn't just replace the first occurrence, it replaces all occurrences, like replaceAll. Exception Throws. Groovy: replaceLast() is missing-1. Regex stands for Regular Expressions. use Regex. that" and get a substring to or from the nth occurrence of a character. 1. R regex - replacing nth match. split string. You can use replaceAll(regex, replacment); function of String, which takes regex and replace all occurrence with provided string. {obj. Example 1: Java String replace() Characters To replace all occurrences of a particular string or substring with another string or substring, we use the second syntax of the replace() method in Java. Hot Network Questions Could anyone please provide the appropriate code to replace the second instance only of "?" just use IndexOf and on second occurrence, replace – Sully. The pattern [a-zA-Z] will match all lowercase English letters (a-z) and all uppercase ones (A-Z). 190" The str can be something like this as well: 1. txt > "texty text. If you want to go the regex route with String#replaceAll(), then you can consider using the following pattern:. Then, use bigString. This problem seems like it ought to be amenable to Java 8 If I have two strings . How to find and replace every nth character occurrence using regex? In my scenario I want to replace the last bit of a string after a period, or the last word and everything after. 5. It has values like 8. To implement this behaviour, we need two regular expressions: Your code certainly looks like it works, and the use of recursion is 'OK'. private String testStringUtils( Hello! I need to replace the second coma in a string, but only the second one and not the others. The pattern cannot be matched again until after another "null" has been passed up, to reach the next semicolon. String inp = "Monday 02nd January 2017"; I want to replace last two characters from second word. Any suggestions? I tried other links but could not get a working solution. toUpperCase(); System. sourceWord is what you want to replace, say AA targetWord is what you want to replace it with say BB. Hot Network Questions When learning about algebra and geometry, should I read roughly or try to understand every sentence? I want to skip first occurrence if no of occurrence more than 4. String test = "is my learning of java language and is interesting"; So i could know that "This" word is removed and it appeared 2 times in given string. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. For instance: String a="aa{aaaaaaa{aaa}"; I'd like to find the index value of the second {. 0" encoding="UTF-8"?> string which appears after the <books> opening tag with a space. those". Examples Input - Geeks For Geeks Output - Geeks For Geeks Line Break: A line break ("\n") is a single character that defines the line change. 0. To know more about more String Methods refer to the article Java String Methods. I always find examples helpful to understand the differences. So you can also do: Algorithm. out. would return "this. 0 I want to split the Both replace() and replaceAll() replace all occurrences in the String. Your command would only work if the string line appeared more than once on one or more lines. "a|e|b|c|a|c|a|d"; You want to remove all repeating strings while preserving the order of elements, e. replaceEach as follows:. Iterate over the chars of your first String; replace the first occurrence of that char in the second string with an empty String. The replacement method above will corrupt non-BMP codepoints by sometimes replacing only half of the surrogate pair. Something like this (not tested) String text = "A&B&C"; String delim = "&"; String[] elements = text. " We cannot predict the value of the "123" part and the "def" part. By understanding how to use this method, you can efficiently process, format, and clean text in your Java applications. Now you are asking a question about changing the appearance of that String in a text field based on key strokes. java How to split the string before the 2nd occurrence of a character in Java. answered How do I create a Java string from the contents of a file? In terms of code size clearly the String. txt" on a Linux box does that in about a second – Erich Kitzmueller. Problem is: I have a string: "ha bla ha ha" Now I want to replace the first (and only the first) "ha" with "gurp": "gurp bla ha ha" string. Expectedly, it finds nothing and returns -1. java replace substring in string specific index. 5. Use the returned IndexOf's startIndex +1 for the starting position of the second IndexOf. elephant. charAt(bowlNumber. lastIndexOf(sourceWord); I am trying to replace the second occurrence of a string in javascript. Example to Replace the First Occurrence I'm using centos 7. This is my second question here and still a beginner so please bear with me. replacing a character every occurrence in a string in java. What I want to do is take a string such as "this. remove the " so you are using the VALUE of the String named remove, not the fixed string "remove" Example: Due to my poor Java knowledge I am unable to manage 3 and 4. You need to separate then replace the spaces and then convert into integer, String division = yourString. Regex. Java replaceAll do not replace string. substring(int beginIndex, int endIndex) and input. Second, I want to replace a character (&) with several characters(amp You may also want to check to make sure your not replacing an occurrence that has already been replaced. Replace() that uses a MatchEvaluator (e. I have a notes class with a method that is supposed to find and replace the first occurrence of a string given by the user, such as "do", in each note (if there is one) and replace that string with a new one given by the user. Django templates: Get current First of all, it seems the explanation you provided is based on a slightly misunderstood formulation of the problem. final String result = str. string1="Hello dear c'Lint and dear Bob" and . *) will greedily consume everything until the last comma, exactly the behavior you want. toLowerCase()) Except that replaceFirst expects 2 strings, so the value. the output) Please refer this Difference between , java string replace() and replaceAll() Test-case when a character doesn’t exist in the given string:-Enter a String: I love Coding. split at all. I want to basically replace the second occurence of the entire xml tag with blank space. 2k 38 38 gold badges 175 175 silver badges 278 278 bronze badges. I've been having trouble with this assignment: Given a string, replace the first occurrence of 'a' with "x", the second occurrence of 'a' with "xx" and the third occurrence of 'a' with "xxx". For example: §ah§ae§al§al§bo §bw§bo§br§bl§bd should become §ahell§bo world. replace(), but that replaces all the a's in the string, returning "elephent". Modified 3 years, Another is to replace the original string with a regexp and after do the split: I just added a second solution that does not use string. String bowlNumber = 1. ^) using tr. 1049. Follow edited May 2, 2013 at 13:00. 1 to 1. So basically replace <?xml version="1. but don't know how to replace the last occurrence of a string I have a string with this format abc-123-def and I want to replace the first "-" with "_" and the second "-" with ". StringBuilder strb=new StringBuilder(myWord); int index=strb. 2 String manipulation, removing characters until the second occurrence in java script Hot Network Questions Convincing the contrapositive is equivalent I am making a natural language language processing application in Java, // group 1 match replace with // from match from group 1 // group 1 // repeated // twice or more replacing a character every occurrence in a string in java. The first pattern (. Modified 7 years, 6 months ago. You may use Matcher#appendReplacement and Matcher#appendTail. Same applies for your replaceAll("remove") attempt. Reading ascii file line by line - Java. Case Java String replace() searches for a literal substring and replaces each occurrence with the replacement string beginning with index 0. Following code snippet replace all but one repeated characters System. It produces a Stream of MatchResult objects which correspond to captured substrings, and the only thing needed is to apply Stream. "; Now, we want to replace the last “word” with “*WORD*” to have the following result: substring() method returns a new String that contains a subsequence of characters currently contained in this sequence. Ditto - same here! 2,480 Views 0 Likes Reply. We may use the lastIndexOf() method to determine the location of the last occurrence of a substring in a Java string, and then we can use the substring() method to build a new string with the replacement. appendReplacement will do two things:. it creates string in heaps and provide you the last string (i. It essentially reads the string backwards and uses the String object's replaceFirst method, this is exactly what I was looking for. I could use a replace function, but Java's replace doesn't accept an index. 11. More about regex and strings in java: * Java regex extract abbreviations * java and, actually, posted code will not compile in Java - the only language the question is tagged with, is the java tag (RegExp is not (standard) Java, neither are single quote ' used/allowed for strings) || also note the question is more than 10 years old and already has an answer [working solution]) However with this code I can only find the first occurrence of it and replace it. My output should be like below. String I'm searching for a way to replace the first occurrence of a certain text in a text file with a value ${A} and the second occurrence of the same text, on a different line, with ${B}. Related. charAt(0), value. Let’s write the code for this −const str = 'aaaaaa'; const subStr = 'a'; const num = 6; Create a polyfill to replace nth occurrence of a string JavaScript - Let’s say, we have created a polyfill function removeStr() that takes in three arguments, namely −subStr → the occurrence of which String is to be removednum → it’s a Number (num)th occurrence of subStr is to be removed from stringThe function should return the new if the removal of the su From your comments I assume your requirements are as follows: You have string that contains multiple parts delimited by the pipe character |, e. Commented May 8, but the second will just return the same string if there is no question mark, or one questions mark I am having difficulty in the following, replacing certain characters from the string There will be two inputs, first will be character and second will be string then I need to replace all those Skip to main content In Java programs we often need to modify strings before using them. Here's the code: I'm suppose to replace a "L" in a string every time it is found in the string HELLO WORLD, with "x". The simple Java implementation is slightly smaller and cleaner (IMHO) than the Lambda (don't get me wrong - I use Lambdas often where they are appropriate) Execution speed was, in order of fastest to slowest: simple Java implementation, Lambda and then String. Replace last underscore in a string. If you're using C#, you can either get all the matches at once (i. String: You can use a while loop with str. Commented Jul 31, 2014 cut -c3- text. get characters from string by index in java. Java replace only first occurrence of a substring in a string. How can I attach a second subpanel to this main? Get the index of the first occurrence by calling indexOf(substring) and save the result in a variable, let’s say firstIdx; Get the index of the second occurrence by calling indexOf(substring, firstIdx + substring. between the first version of the budget deal and the I have a string which looks something like this(the most basic form): String str = "1. String function to replace nth occurrence of a character in a string JavaScript - We are required to write a function removeStr() that lives on String. Simple rebuild the string using the first and second capture groups, with and in between them. for people newer to Java. The code is as follows: String addresses = "a, Note that in the question, the operations do not follow the Java behaviour, i. // Using example filePath from question String filePath = "/mnt/sdcard/OG Ron C, Chopstars & Drake - Choppin Ain't The Same-2013-MIXFIEND/02 Drake - Connect (Feat. First of all, lastIndexOf will return an index, not a string. "," "); System . By calling indexOf twice, you find the first instance of the string than check for another instance skipping past the first instance (+4 since indexOf will return the start of the string, adding the length of String test = "This is my learning of java language and this is interesting"; I want to pick first word of this string and remove all its occurences and result should be . length-2)+otherchar. Simple Code. 236 I'd like to use a regex pattern to do a replace in an editor like Notepad++, I came up with this regex to match my expression: \d{1,2}:\d{1,2}:\d{1,3} Using Java, I want to go through the lines of a text and replace all ampersand However, how can I replace the character? First, Strings are immutable objects. Examples. rcps nzmaoi pzrgr nryh dcxxz iqfbr hdgqkzh kxezgy glfyqhc rtomg