Using the Boolean and Logical Short-Circuit Operators : boolean Operators « Operators « SCJP

1. SCJP
2. Operators
3. boolean Operators

Expression x && y is evaluated in the following manner:

1. Evaluate x.
2. If x is false, return false.
3. Otherwise, if x is true evaluate y.
4. Return the value of y.



The expression x || y is evaluated as follows:

1. Evaluate x.
2. If x is true return true.
3. Otherwise, if x is false evaluate y.
4. Return the value of y.



public class MainClass{
 static boolean secondPart(boolean b) {
  System.out.print("secondPart! ");
  return b;
 }
 public static void main(String args[]) {
  boolean t = true;
  boolean f = false;
  System.out.println(false & secondPart(true));
  System.out.println(false && secondPart(true));
  System.out.println(true | secondPart(true));
  System.out.println(true || secondPart(true));
 }
}

secondPart! false
false
secondPart! true
true