Java Program to Concatenate Strings in Java

Write a program to Concatenate Two Strings in Java.

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There are many ways to Concat Strings in java. We will see 2 approach to concatenate Strings in Java by using + operator and by using concat() method.

Approach 1: By using + operator.

You can concat two or more strings in Java using + Operator. Let's see below program and things will be more clear.

package javabypatel;

public class Test {  
 public static void main(String args[]){  
  String str = "Java" + "By" + "Patel";  
  System.out.println(str);  
 }  
} 

Output: JavaByPatel


Approach 2: By using String API's concat() method.

We can also using String class concat() method to concat 2 Strings in Java.

Let's see one example below on how to use concat() method in Java.

package javabypatel;

public class Test {  
 public static void main(String args[]){
  String str1 = "Java";
  String str2 = "By";
  String str3 = "Patel";
  
  String str1str2ConcatResult = str1.concat(str2);
  System.out.println(str1str2ConcatResult);
  
  String str1str2str3ConcatResult = str1str2ConcatResult.concat(str3);
  System.out.println(str1str2str3ConcatResult);
 }  
} 

Output: 
JavaBy 
JavaByPatel

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Enjoy !!!! 

If you find any issue in post or face any error while implementing, Please comment.