Operator Logika

package projectpbo1;
public class OperatorLogika {
public static void main(String []args){
boolean a=true,b=true;
System.out.println("A\tB\tA && B\tA OR B\tA XORB\tNOT A");
for (int i=0;i<2;i++) {
for (int j=0;j<2;j++){
System.out.println(a+"\t"+b+"\t"+ (a &&
b)+"\t" +(a || b)+"\t"+(a ^ b)
+"\t"+(!a)); b=!b;
}
a=!a;
}
}
}