Java添加事件监听的四种方法代码实例

java添加事件的几种方式（转载了codebrother的文章，做了稍微的改动）：

/**
 * java事件监听处理——自身类实现actionlistener接口，作为事件监听器
 *
 * @author codebrother
 */
class eventlistener1 extends jframe implements actionlistener {
  private jbutton btblue, btdialog;

  public eventlistener1() {
    settitle("java gui 事件监听处理");
    setbounds(100, 100, 500, 350);
    setlayout(new flowlayout());
    btblue = new jbutton("蓝色");   
    btdialog = new jbutton("弹窗");
    
    // 将按钮添加事件监听器
    btblue.addactionlistener(this);
    btdialog.addactionlistener(this);

    add(btblue);
    add(btdialog);

    setvisible(true);
    setdefaultcloseoperation(jframe.exit_on_close);
  }
  // ***************************事件处理***************************
  @override
  public void actionperformed(actionevent e) {
    if (e.getsource() == btblue) {
      container c = getcontentpane();
      c.setbackground(color.blue);
    }
    else if (e.getsource() == btdialog) {
      jdialog dialog = new jdialog();
      dialog.setbounds(300, 200, 400, 300);
      dialog.setvisible(true);
    }
  }

}

/**
 * java事件监听处理——内部类处理
 *
 * @author codebrother
 */

class eventlistener3 extends jframe {
  private jbutton btblue, btdialog;

  // 构造方法
  public eventlistener3() {
    settitle("java gui 事件监听处理");
    setbounds(100, 100, 500, 350);
    setlayout(new flowlayout());
    btblue = new jbutton("蓝色");
    btdialog = new jbutton("弹窗");
    // 添加事件监听器对象(面向对象思想)
    btblue.addactionlistener(new coloreventlistener());
    btdialog.addactionlistener(new dialogeventlistener());

    add(btblue);
    add(btdialog);
    setvisible(true);
    setdefaultcloseoperation(jframe.exit_on_close);
  }
  // 内部类coloreventlistener，实现actionlistener接口
  class coloreventlistener implements actionlistener {
    @override
    public void actionperformed(actionevent e) {
      container c = getcontentpane();
      c.setbackground(color.blue);
    }
  }
  // 内部类dialogeventlistener，实现actionlistener接口
  class dialogeventlistener implements actionlistener {
    @override
    public void actionperformed(actionevent e) {
      jdialog dialog = new jdialog();
      dialog.setbounds(300, 200, 400, 300);
      dialog.setvisible(true);
    }
  }

}

/**
 * java事件监听处理——匿名内部类处理
 *
 * @author codebrother
 */
class eventlistener2 extends jframe {
  private jbutton btblue, btdialog;

  public eventlistener2() {
    settitle("java gui 事件监听处理");
    setbounds(100, 100, 500, 350);
    setlayout(new flowlayout());

    btblue = new jbutton("蓝色");
    btdialog = new jbutton("弹窗");
    
    // 添加事件监听器(此处即为匿名类)
    btblue.addactionlistener(new actionlistener() {
      // 事件处理
      @override
      public void actionperformed(actionevent e) {
        container c = getcontentpane();
        c.setbackground(color.blue);
      }
    });
    
    // 并添加事件监听器 
    btdialog.addactionlistener(new actionlistener() {
      @override
      public void actionperformed(actionevent e) {
        jdialog dialog = new jdialog();
        dialog.setbounds(300, 200, 400, 300);
        dialog.setvisible(true);
      }
    });

    add(btblue);
    add(btdialog);
    setvisible(true);
    setdefaultcloseoperation(jframe.exit_on_close);
  }

}

/**
 * java事件监听处理——外部类处理
 *
 * @author codebrother
 */
class eventlistener4 extends jframe {
  private jbutton btblue, btdialog;

  public eventlistener4() {
    settitle("java gui 事件监听处理");
    setbounds(100, 100, 500, 350);
    setlayout(new flowlayout());
    btblue = new jbutton("蓝色");
    btdialog = new jbutton("弹窗");
    // 将按钮添加事件监听器
    btblue.addactionlistener(new coloreventlistener(this));
    btdialog.addactionlistener(new dialogeventlistener());

    add(btblue);
    add(btdialog);
    setvisible(true);
    setdefaultcloseoperation(jframe.exit_on_close);
  }

}
// 外部类coloreventlistener，实现actionlistener接口
class coloreventlistener implements actionlistener {
  private eventlistener4 el;
  coloreventlistener(eventlistener4 el) {
    this.el = el;
  }
  @override
  public void actionperformed(actionevent e) {
    container c = el.getcontentpane();
    c.setbackground(color.blue);
  }
}
// 外部类dialogeventlistener，实现actionlistener接口
class dialogeventlistener implements actionlistener {
  @override
  public void actionperformed(actionevent e) {
    jdialog dialog = new jdialog();
    dialog.setbounds(300, 200, 400, 300);
    dialog.setvisible(true);
  }
}

public class actionlistenertest
{
  public static void main(string args[])
  {
    new eventlistener2();
  }
}