Question

How to replace substring between brackets in a string with Java

Answer 1

public class MyClass {
   public static String replace_substring_between_brackets(String str, String replacement) {
        int beginIndex = str.indexOf('(') + 1;
 
        int endIndex = str.lastIndexOf(')');
 
        String substring = str.substring(beginIndex, endIndex);
        
        return str.replace(substring, replacement);
    }
 
    public static void main(String[] args)
    {
        String str = "Java (March 2023) 20 / 21";
 
        System.out.println(replace_substring_between_brackets(str, "SE"));
    }
}




/*
run:

Java (SE) 20 / 21

*/

 

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Answer 2

public class MyClass {
    public static void main(String[] args)
    {
        String str = "Java (March 2023) 20 / 21";
        
        str = str.replaceAll("(?<=\\().*?(?=\\))", "SE");
  
        System.out.println(str);
    }
}
 
 
 
 
/*
run:
 
Java (SE) 20 / 21
 
*/

 

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