Java 设计模式 之 命令模式

http://www.verejava.com/?id=16999074395365

package com.command.theory;

import java.util.ArrayList;

public class TestCommand
{
    public static void main(String[] args)
    {
        Button btnOk=new Button("确定");
        Button btnCancel=new Button("取消");
        
        btnOk.addActionListener(new ActionListener(){

            @Override
            public void actionPerformed(ActionEvent e)
            {
                System.out.println("确定按钮被点击");
            }
            
        });
        btnCancel.addActionListener(new ActionListener(){

            @Override
            public void actionPerformed(ActionEvent e)
            {
                System.out.println("取消按钮被点击");
            }
            
        });
        
        Mouse m=new Mouse();
        m.click(btnOk);
        m.click(btnCancel);
    }
}





package com.command.theory;

public class Mouse
{
    public void click(Button btn)
    {
        ActionEvent e=new ActionEvent(btn.getText(),btn);
        btn.getActionListener().actionPerformed(e);
    }
}





package com.command.theory;

public class Button
{
    private ActionListener actionListener;
    private String text;
    public Button(String text)
    {
        super();
        this.text = text;
    }
    public ActionListener getActionListener()
    {
        return actionListener;
    }
    public void addActionListener(ActionListener actionListener)
    {
        this.actionListener = actionListener;
    }
    public String getText()
    {
        return text;
    }
    public void setText(String text)
    {
        this.text = text;
    }
    
    
}





package com.command.theory;

public interface ActionListener
{
    public void actionPerformed(ActionEvent e);
}





package com.command.theory;

public class ActionEvent
{
    private String name;
    private Object source;
    public ActionEvent(String name, Object source)
    {
        super();
        this.name = name;
        this.source = source;
    }
    public String getName()
    {
        return name;
    }
    public void setName(String name)
    {
        this.name = name;
    }
    public Object getSource()
    {
        return source;
    }
    public void setSource(Object source)
    {
        this.source = source;
    }
    
    
}

http://www.verejava.com/?id=16999074395365

转载于:https://www.cnblogs.com/verejava/p/9237025.html