AbstractAction举例

abstractAction主要是可以统一定制，不需要像actionListener要一个一个去注册。

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具体代码如下：

Jframe中一共3个地方用到了abstractAction:jmenuitem,jtoobar,jbutton

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package testAbstractClass;import java.awt.*;  import java.awt.event.*;  import javax.swing.*;  import javax.swing.event.*;    public class AbstractActionDemo1 extends JFrame {      JTextArea theArea = null;      ToolBarAction pushAction = null;            public AbstractActionDemo1(){          super("AbstractAction");          theArea = new JTextArea();          theArea.setEditable(true);          this.getContentPane().add(new JScrollPane(theArea));                              pushAction = new ToolBarAction("按我",null);                    JMenuBar menuBar = buildJMenuBar();          menuBar.setOpaque(true);          JToolBar toolBar = buildJToolBar();          this.getContentPane().add(toolBar,BorderLayout.NORTH);                  JButton jb=new JButton(pushAction);        this.getContentPane().add(jb,BorderLayout.WEST);                  this.setJMenuBar(menuBar);          this.setVisible(true);          this.setBounds(new Rectangle(200,200,400,200));          this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      }            public static void main(String...args){          new AbstractActionDemo1();      }            public JMenuBar buildJMenuBar(){          JMenu fileMenu = new JMenu("File");          fileMenu.setMnemonic('F');          fileMenu.add(pushAction);          JMenuBar menuBar = new JMenuBar();          menuBar.add(fileMenu);        return menuBar;      }            public JToolBar buildJToolBar(){          JToolBar toolBar = new JToolBar();          toolBar.add(pushAction);          toolBar.setFloatable(true);          return toolBar;                }            class ToolBarAction extends AbstractAction{          public ToolBarAction(String name,Icon icon){              super(name,icon);          }          @Override          public void actionPerformed(ActionEvent e){              theArea.append("是Action的好\n");          }      }  }