Question

How to insert substring in a string at specific position in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        String s = "java programming language"; 
        
        s = s.substring(0, 4) + " SE 11 " + s.substring(5, s.length());
            
        System.out.println(s);
    }
}


/*
run:

java SE 11 programming language

*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        String s = "java programming language"; 
        
        s = s.substring(0, 5) + "SE 11" + s.substring(4, s.length());
            
        System.out.println(s);
    }
}


/*
run:

java SE 11 programming language

*/

 

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Answer 3

public class MyClass {
    public static void main(String args[]) {
        String s = "java programming language"; 

        s = new StringBuilder(s).insert(4, " SE 11").toString();
        
        System.out.println(s);
    }
}


/*
run:

java SE 11 programming language

*/

 

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