facade.java

来自「thinking in patterns」· Java 代码 · 共 27 行

//: facade:Facade.java
package facade;
import junit.framework.*;

class A { public A(int x) {} }
class B { public B(long x) {} }
class C { public C(double x) {} }

// Other classes that aren't exposed
// by the facade go here ...

public class Facade extends TestCase  {
  static A makeA(int x) { return new A(x); }
  static B makeB(long x) { return new B(x); }
  static C makeC(double x) { return new C(x); }
  public void test() {
    // The client programmer gets the objects
    // by calling the static methods:
    A a = Facade.makeA(1);
    B b = Facade.makeB(1);
    C c = Facade.makeC(1.0);
  }
  public static void main(String args[]) {
    junit.textui.TestRunner.run(Facade.class);
  }
} ///:~