Why it always print yes

Question

import java.util.Scanner;
public class Javac {
public static void main(String[] args)
{
System.out.println("Enter a sring");
Scanner sc= new Scanner(System.in);
String s=sc.nextLine();
check(s);
}

static void check(String s)
{

int end = s.length()-1;
int start=0;
boolean ans=true;
while(start<end)
{
if(s.charAt(start)!=s.charAt(end))
{
ans=false;
break;
}
start++;
end--;
}
if(ans=true) {
System.out.println("yes");
}
else {
System.out.println("no");
}

}

}

/* INPUT : SACHIN
OUTPUT : YES
PALINDROME CHECK
*/

Answer 1

Look at this line
if(ans==true) {
One '=' is missing

Answer 2

Than you it takes my 3 hrs