Return value syntax in java

Question

I am not really sure what this method does, or better I am not sure what " : " means. Can someone please help me understand?

private int guess( )
 {
      return isTrue( ) ? A : isFalse(  ) ? B : neither( ) ? C : D;
 }

Answer 1

This is a case of nested ternary operators which have the form a ? b : c which evaluates to:

if (a) then b, else c

---

So your question breaks down to this:

if (isTrue()) {
    return A;
} else if(isFalse()) {
    return B;
} else if(neither()) {
    return C;
} else {
    return D;
}