Java Program to check a String is palindrome or not by ignoring its case

• A palindrome is a word that reads the same backward or forward.
• Lets see what if the characters in a palindrome string are in different case. i.e should not be case sensitive. 
• So now we will see how to check a string is palindrome or not by ignoring its case.
• Write a function which checks  that string is palindrome or not by converting the original string to lowercase or uppercase.
• Method should return true if it is palindrome, return false if not a palindrome.

#1 : Java Program to check given string is palindrome or not by ignoring its case.

1. package com.instanceofjava;
2. 
   
3. public class CheckPalindrome {
5. public static boolean isPalindrome(String str) {
7. StringBuffer strone=new StringBuffer(str.toLowerCase());
8. StringBuffer strtwo=new StringBuffer(strone);
9.  
10.   strone.reverse();
11.  
12.   System.out.println("Orginal String ="+strtwo);
13.   System.out.println("After Reverse ="+strone);
14.  
15. if(String.valueOf(strone).compareTo(String.valueOf(strtwo))==0)
16. return true;
17.     else
18.     return false;
20. }
22. public static void main(String[] args) {
24. boolean ispalindrome= isPalindrome("DeleveleD");
26. System.out.println(ispalindrome);
27.  
28.     }
29. 
    
30. }

Output

1. Orginal String =deleveled
2. After Reverse =deleveled
3. true