Java Program to Concatenate String.

The concat() method of the String class concatenates the specified string to the end of this string.

Example

Live Demo

import java.lang.*;
   public class StringDemo {
      public static void main(String[] args) {

      // print str1
      String str1 = "self";
      System.out.println(str1);

      // print str2 concatenated with str1
      String str2 = str1.concat(" learning");
      System.out.println(str2);

      // prints str3 concatenated with str2(and str1)
      String str3 = str2.concat(" center");
      System.out.println(str3);
   }
}

Output

self
self learning
self learning center