// exceptions/Switch.java

// (c)2021 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

public class Switch {

private boolean state = false;

public boolean read() {

return state;

}

public void on() {

state = true;

System.out.println(this);

}

public void off() {

state = false;

System.out.println(this);

}

@Override

public String toString() {

return state ? "on" : "off";

}

}