if (a || b){someProcedure();}

01: //filename : TestBoolean.java
02: class TestBoolean {
03:   public static void main(String[] args) {
04:     boolean a = false;
05:     boolean b = false;
06:     for( int i = 0; i07:       if (i==0){a = false;} else { a = true;}
08:       for( int j = 0; j09:         if (j==0){b = false;} else { b = true;}
10:           //
11:           System.out.println("* a : " + a + ", b : " + b);
12:           System.out.println(" a Or b : "+ (a | b) );
13:           System.out.println(" Not a : "+ (!a) );
14:           System.out.println(" a XOr b : "+ (a ^ b) );
15:           //
16:       }
17:     }
18:   } // end of main
19: } // end of class

* a : false, b : false
   a Or b : false
   Not a : true
   a XOr b : false
* a : false, b : true
   a Or b : true
   Not a : true
   a XOr b : true
* a : true, b : false
   a Or b : true
   Not a : false
   a XOr b : true
* a : true, b : true
   a Or b : true
   Not a : false
   a XOr b : false

if (a) {
   someProcedure();
} else if (b) {
   someProcedure();
}

if (a) {
   someProcedure();
}
if (b) {
   someProcedure();
}