/**
* 命令模式
* @author TMAC-J
* 将调用者和接受者分离
* 可以将一组命令组合在一起，适合很多命令的时候
*/
public class CommandPattern {
interface Command{
void excute();
}
public class TVReceiver{
public void shift(){
System.out.println("shift");
}
public void turnon(){
System.out.println("turnon");
}
public void Turndown(){
System.out.println("Turndown");
}
}
public class ShiftTV implements Command{
private TVReceiver tv;
public ShiftTV(TVReceiver tv) {
this.tv = tv;
}
@Override
public void excute() {
tv.shift();
}
}
public class TurnonTV implements Command{
private TVReceiver tv;
public TurnonTV(TVReceiver tv) {
this.tv = tv;
}
@Override
public void excute() {
tv.turnon();
}
}
public class Turndown implements Command{
private TVReceiver tv;
public Turndown(TVReceiver tv) {
this.tv = tv;
}
@Override
public void excute() {
tv.Turndown();
}
}
public class Invoker{
private Command shiftTv,turnon,turndown;
public Invoker(Command shiftTv,Command turnonTV,Command turndown) {
this.shiftTv = shiftTv;
this.turnon = turndown;
this.turndown = turndown;
}
public void shift(){
shiftTv.excute();
}
public void turnon(){
turnon.excute();
}
public void turndown(){
turndown.excute();
}
}
public class Client{
public void test(){
TVReceiver tv = new TVReceiver();
Invoker invoker = new Invoker(new ShiftTV(tv), new TurnonTV(tv), new Turndown(tv));
invoker.shift();
invoker.turnon();
invoker.turndown();
}
}
}
