How do you check if the first half of a string is the same as the second half of the string?

Question

how to check if the first half of a string is the same as the second half of the string? (not to be confused with palindromes) This is my code so far.

   Scanner oIn = new Scanner (System.in);
   String sFB = oIn.nextLine();
   int length = sFB.length();

   boolean bYes = true;
   char cA, cB;

   for (int i = 0; i < length/2; i++){
      cA = sFB.charAt(i);
      cB = sFB.charAt(/*what do i put here?*/);

       if (cA != cB){
           bYes = false;
           break;
       }
   }

   if (bYes) {
       System.out.println("It's the same");
   }
   else {
       System.out.println("It's not the same");
   }

Example String Input: abab

Output: It's the same

Answer 1

If your input is of length of odd number then its not same as second half.

if(sFB.length()%2!=0){
System.out.println("It's not the same");
}

Complete code as below.

public class StringEqualsSecondHalf {

public static void main(String[] args) {
    String sFB="String";
    if(sFB.length()%2!=0){
        System.out.println("Its not same");
    }
    else{
        String firstHalf=sFB.substring(0,sFB.length()/2);
        System.out.println("First Half "+firstHalf);
        String secondHalf=sFB.substring(sFB.length()/2,sFB.length());
        System.out.println("Second Half "+secondHalf);
        if(firstHalf.equals(secondHalf)){
            System.out.println("They are same");
        }
        else{
            System.out.println("They are not same");
        }
    }

}

}