Java - String concat() Method


This method appends one String to the end of another. The method returns a String with the value of the String passed in to the method appended to the end of the String used to invoke this method.


Here is the syntax of this method:
public String concat(String s)

Here is the detail of parameters:

  • s -- the String that is concatenated to the end of this String.

Return Value :

This methods returns a string that represents the concatenation of this object's characters followed by the string argument's characters.

public class Test {

   public static void main(String args[]) {
      String s = "Strings are immutable";
      s = s.concat(" all the time");
This produces following result:

Strings are immutable all the time

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