Whats wrong in the code plis helo

Question

public class Program
{
public static void main(String[] args) {
System.out.println(Palindrome(373));

}
}

public class Pal{
int a,b,sum=0;

static void Palindrome(int n){
b=n;
while(n>0){
a=n%10;
sum=(sum*10)+a;
n=n/10;
}
if(sum==b){
System.out.println("palindrome");
}
else{
System.out.println("not palindrome");
}
}
}

Answer 1

Please, post codes as links to Code Playground. It will make helping you easier for us.

Answer 2

Thank you everyone

Answer 3

1. The method Palindrome is inside another class called Pal, so to call it inside main use:
'Pal.Palindrome(373)'

2. The method Palindrome is accessing variables 'a', 'b' and 'sum',
because Palindrome is a static method this variables must be static:
static int a, b, sum = 0;

3. The method Palindrome returns void, so you should not put it inside a 'println' in main.
Just do this:
Pal.Palindrome(373);

Answer 4

Add int a,b,sum=0; declarations inside method.
Moreover call the method Palindrome
using the class name and not inside in println.

For example :
Pal.Palindrome(373);

If you need to call it inside the println function you should make it return string.

The full code is as follow :

public class Pal{

static void Palindrome(int n){
int a,b,sum=0;
b=n;
while(n>0){
a=n%10;
sum=(sum*10)+a;
n=n/10;
}
if(sum==b){
System.out.println("palindrome");
}
else{
System.out.println("not palindrome");
}
}
}

public class Program
{
public static void main(String[] args) {
Pal.Palindrome(373);

}
}

Answer 5

The other way is :

public class Pal{

static String Palindrome(int n){
int a,b,sum=0;
b=n;
while(n>0){
a=n%10;
sum=(sum*10)+a;
n=n/10;
}
if(sum==b){
return "palindrome";
}
else{
return "not palindrome";
}
}
}

public class Program
{
public static void main(String[] args) {
System.out.println(Pal.Palindrome(373));

}
}