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To Check whether String is Palindrome or not using Java Program, First Let’s know about Palindrome.

What is Palindrome?

A String is called a palindrome, when it is not changed either we write it from starting point or the last end of the String.

For Example: “kayak”

If we write it from the start or the end, we will get “kayak”.

String Palindrome Program in Java

import java.util.*;  
public class Main {  
    public static void main(String[] args) {  
        Scanner sc= new Scanner(System.in);
        System.out.println("String Palindrome program in Java ");  
        System.out.println("Please give String : ");  
        String str= sc.nextLine();  
        StringBuilder strRev = new StringBuilder();
        strRev.append(str);
        strRev = strRev.reverse(); 
        if(str.equals(strRev.toString())){
            System.out.print("String is palindrom"); 
        }else{
            System.out.print("String is not palindrom"); 
        }
    }  
}   

Output 1:

String Palindrome program in Java 
Please give String : 
kayak
String is palindrom

Output 2:

String Palindrome program in Java 
Please give String : 
tutor
String is not palindrom