Replace all occurrences of a character in String in Java

This post will discuss how to replace all occurrences of a character in string with another character in Java.

1. Using `String.replace()` method

The standard solution to replace all occurrences of a character in the String with another is with the String.replace() method. Its usage is demonstrated below:

public class Main

{

public static void main(String[] args)

{

String str = "A|B|C|D|E";

char ch = '|';

str = str.replace(ch, ',');

System.out.println(str);

}

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Output:

A,B,C,D,E

If you need to replace each occurrence of a substring in the string with another string, you can use the String.replaceAll() method:

public class Main

{

public static void main(String[] args)

{

String str = "A|B|C|D|E";

String regex = "\\|";

String replacement = ", ";

str = str.replaceAll(regex, replacement);

System.out.println(str);

}

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Output:

A, B, C, D, E

2. Using `StringUtils.replaceChars()` method

If you use the Apache Commons Lang library in your project, consider using the StringUtils.replaceChars() method, which is a null-safe version of the String.replace() method.

import org.apache.commons.lang3.StringUtils;

public class Main

{

public static void main(String[] args)

{

String str = "A|B|C|D|E";

char ch = '|';

str = StringUtils.replaceChars(str, ch, ',');

System.out.println(str);

}

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Output:

A,B,C,D,E

That’s all about replacing all occurrences of a character in string in Java.

Replace all occurrences of a character in String in Java

1. Using String.replace() method

2. Using StringUtils.replaceChars() method

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1. Using `String.replace()` method

2. Using `StringUtils.replaceChars()` method