Java Program For Concatenation of Two Static Strings

import java.io.*;
import java.lang.*;
class Concate
{
    public static void main(String args[])throws IOException
    {
        String s1="programming";
        String s2="nine";
        System.out.println("concatenation of s1 and s2:"+s1.concat(s2));
    }
}

 OUTPUT:

Compile :javac Concate.java
Run :java Concate
concatenation of s1 and s2:programmingnine