JAVA事件处理的常用写法

******事件处理的常用写法******

//内部匿名类
list.addSelectionListener(new SelectionListener(){
   //程序代码
});

 

//内部类
SelctionListener listener = new SelctionListener(){
   public void widgetSelected(SelectionEvent e){
   }
  
   public void widgetDefaultSelected(SelectionEvent e){
   }
};

Button button = new Button(shell,SWT.NONE);
button.addSelectionListener(listener);

//list.addSelectionListener(listener);
//list.removeSelectionListener(listener);

//实现接口的类
public class MyListener implements SelectionListener{
   public void widgetSelected(SelectionEvent e){}
   public void widgetDefaultSelected(SelectionEvent e){}

};

Button button = new Button(shell,SWT.NONE);
button.addSelectionListener(new MyListener());

 

//继承的类的方法
public class MyAdapter extends SelectionAapter{
   public void widgetSelected(SelectionEvent e){
   }
   public void widgetDefaultSelected(SelectionEvent e){
   }
};

Button button = new Button(shell,SWT.NONE);
button.addSelectionListener(new MyAdapter());