javax.swing.JComponent

 java.awt.LayoutManager

 

涉及3个角色

 

策略架构：

public class Context {

 private Strategy strategy;  /**   * 策略方法   */  public void contextStrategy () {   strategy.strategyInterface();  } }

//策略接口

public interface Strategy {

 public void strategyInterface();

  }

//策略实现

public class ConcreteStrategyA implements Strategy {

 /**   * 策略方法   */  public void strategyInterface() {   System.out.println("ConcreteStrategyA ...");  }

}