Java String - concat() Method

The java.lang.String.concat() method returns the string which contains the specified string added to the end of the given string.

Syntax

public String concat(String str)

Parameters

str Specify a string value which need to be added to the given string.

Return Value

Returns the concatenated version of the specified string.

Example:

In the example below, concat() method is used to add the string called str2 to the end of the string called str1.

import java.lang.*;

public class MyClass {
  public static void main(String[] args) {
    String str1 = "Hello";
    String str2 = " World!.";

    System.out.println(str1.concat(str2)); 
  }
}

The output of the above code will be:

Hello World!.

Example:

The example below shows how to concatenate more than two string using concat() method.

import java.lang.*;

public class MyClass {
  public static void main(String[] args) {
    String str1 = "Learning";
    String str2 = " Java";
    String str3 = " is fun.";
    
    //concatenate all three strings
    String str = str1.concat(str2).concat(str3);
    
    //print the final string
    System.out.println(str); 
  }
}

The output of the above code will be:

Learning Java is fun.

❮ Java.lang - String