package javaapplication1;
public class JavaApplication1 {
public static void main(String[] args) {
try {
boolean b = true;
System.out.println(b);
b = !b;
System.out.println(b);
b = !b;
System.out.println(b);
} catch (Exception e) {
System.out.print(e.toString());
}
}
}
/*
run:
true
false
true
*/