如何告诉我的代码“ Flush”？

Question

I'm suppose to create a code that recognizes if my hand has the same card faces

public static boolean sameFace(String hand) {

hand = "s9s7s2sQsK";
char f = hand.charAt(0);

if( hand.charAt(0)==hand.charAt(2) && hand.charAt(0)==hand.charAt(4) 
&& hand.charAt(0)==hand.charAt(6) && hand.charAt(0)==hand.charAt(8));

return (hand.charAt(0) == hand.charAt(2) && hand.charAt(0) == hand.charAt(4) 
   && hand.charAt(0) == hand.charAt(6) && hand.charAt(0) == hand.charAt(8));

   sameface = hand;
   if (hand==true;)

   return (hand==true;) ; 

 } 

As can be seen above, if all positions are the same characters, it comes true(False, if even one isn't the same.) How can I then use the result of that "return" to let my program recognize it has the same faces or not? If that is even possible.

From what i know, based on my code, it's saying "Yes, positions x=y=z are the same" how can I then tell it "Since they are the same, they have the same card faces."

I tried to put this at the end

   sameface = hand;
   if (hand==true;)
       return (hand==true;) ;  

Basically I'm trying to say that when the "hand" return statement is true, then samefaces is true. Meaning that the faces are the same. And if it's false it'll return false.

Answer 1

Basically I'm trying to say that when the "hand" return statement is true, then samefaces is true. Meaning that the faces are the same. And if it's false it'll return false.

You do that simply by returning the result of the expression:

public static boolean sameFace(String hand) {
    char f = hand.charAt(0);
    return f == hand.charAt(2) &&
           f == hand.charAt(4) &&
           f == hand.charAt(6) &&
           f == hand.charAt(8);
}

Or if you want to be friendly to a different number of cards, use a loop:

public static boolean sameFace(String hand) {
    char f = hand.charAt(0);
    for (int i = 2, len = hand.length(); i < len; i += 2) {
        if (f != hand.charAt(i)) {
            // Not a match
            return false;
        }
    }

    // All matched
    return true;
}