Frequently Asked Java Program 05: Palindrome String | How to Check Given String is Palindrome or Not 

Thanks, i was learnt with C++ where you could do 'if( cond1 == cond2 )' and in Java i was getting No, even though the answer was supposed to be Yes, because i was inserting a Palindrome, but when i used .equals() then the program was working fine. Weird, but thanks!

In Java you can’t use == operator for string comparisons .. it’s not recommended..rather use .equal method

Thank you very much sir, I got job because of UR frequently asked questions Playlist as java developer videos

in Java you can’t use == operator for string comparisons i tried it == it was not working the if loop i was getiting error for 2 hours then i changed it to .equals then it worked i was about to doubt on my self that iam not for coding finally i got it

You explain it the best way thanks a lot sir...

import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); String s = in.nextLine(); String s1 = s; String rev = ""; int length = s.length(); for (int i = length - 1; i >= 0; i--) { rev = rev + s.charAt(i); } if (s1.equals(rev)) { System.out.println("YES"); } else System.out.println("NO"); } }

good.. It is better to use if(org_string.equalsIgnoreCase(reverseString)) .. rather than .equals(str) otherwise for Pop => it will give not a palindrome string because of UpperCase..

So quick and easy, thank you so much!!

Thanks a lot for such informative video class thanks a lot.......

Thank you sir for wonderful explanation

In Java you can't use "==" operator for string comparisons, rather use ".equals()" method.

I think These all programs will help me to crack the job in future

Thanku sir ji🙏.

why are we using org_str to store original string, we are not changing it's value so we can directly use str here. Can someone explain?

Sir we can not use == operator to compare string

sir how to reverse a array that are separated by spaces and other special characters

It's better to use equalsignorecase 😊

Excellent .Please can you add few interview program for collections

we can use str directly instead taking org = str

thanks sir 🥺

vara level🥳

In 'if' statement "== "operator will Not work as it checks d address, besides equal method checks values.

How can you solve a palindrome string for Boolean? For instance: public boolean isPalindrome(string s)

It doesnt work if we use both uppercase and lowercase at a time

What will we do if we write Madam instead of MADAM ? it showing as not palindrom.. How to ignore camel casing ?

How can we do it with multiple strings?

Please do some dsa tutorial

looks like line 12 is not required as we are not changing the original string unlike number

try this program.......... it will work fine to check PALINDROME OR NOT both for number and a string ... import java.util.*; class StrPalindrome{ public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println("Enter a string: "); String str=sc.next(); String original=str; String reverse=""; StringBuffer sb=new StringBuffer(str); sb.reverse(); reverse=sb.toString(); if(reverse.equalsIgnoreCase(original)) System.out.println("PALINDROME"); else System.out.println("NOT PALINDROME"); } }

Palindrome Descendant Java Coding Challenge | How'd You Code That? | Episode 18

I want do it for 3 strings, how i can do it?

i have tried as same above, but while i compiled there is no error, while getting output even the palindrome string was saying like not a palindrome. How to resolve this sir? Kindly help me

Sir ye saare video aap hindi me bhi banaiye.

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Can anyone do it for number also?

hello sir, i used stringbuilder class but it not giving correct result. public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("enter your string:"); String str = sc.next(); //String org_str = str; StringBuilder org_str = new StringBuilder(str); StringBuilder sb = new StringBuilder(str); StringBuilder rev_str = sb.reverse(); System.out.println(rev_str); System.out.println(org_str); if(org_str.equals(rev_str)) { System.out.println("string is palindrome"); }else { System.out.println("string is not palindorme"); } }