Facade : 瞭解每一個子系統類的功能,負責分發客戶端的請求給各個子系統去處理。
class Class1 {
public
void op1() {
System.out.println("方法1");
}
}
class Class2 {
public
void op2() {
System.out.println("方法2");
}
}
class Class3 {
public
void op3() {
System.out.println("方法3");
}
}
Subsystem Classes : 實現子系統功能。在不感知 Facade 的狀況下,處理 Facade 對象分配的工做,
class Facade {
private Class1 one =
new Class1();
private Class2 two =
new Class2();
private Class3 three =
new Class3();
public
void op1() {
System.out.println("Facade op1()");
one.op1();
}
public
void op2() {
System.out.println("Facade op2()");
two.op2();
}
public
void op3() {
System.out.println("Facade op3()");
three.op3();
}
public
void Method() {
System.out.println("Facade Method()");
three.op3();
two.op2();
one.op1();
}
}
public
class FacadePattern {
public
static
void main(String[] args) {
Facade facade =
new Facade();
facade.Method();
facade.op1();
}
}
Facade Method()
方法3
方法2
方法1
Facade op1()
方法1