java²¼¾Ö - Java / Java SE

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¿ÉÊÇÔÚ¼Óµ½½çÃæÉÏʱȴ²»³É¹¦ÏÔʾ£¬ÎҵĴúÂëÈçÏ£ºJava code:

private void init(){

//³õʼ»¯²Ëµ¥
open.addActionListener(new Act_OpenFile());
exit.addActionListener(new Act_Exit());

//funOntology.addActionListener(new Act_FunOnto());
funOntology.addActionListener(new Act_fun());
devOntology.addActionListener(new Act_devOnto());
wayOfAch.addActionListener(new Act_WayOfAch());
funTree.addActionListener(new Act_FunTree());
showHelp.addActionListener(new Act_Help());

mb.add(m1);

m1.add(open);
m1.add(exit);

m2.add(funOntology);
m2.add(devOntology);
m2.add(wayOfAch);
m2.add(funTree);

m3.add(showHelp);

mb.add(m2);
mb.add(m3);

setJMenuBar(mb);

button1 = new JButton( "pre ");
button2 = new JButton( "next ");
button3 = new JButton( "end ");
toolBar.add(button1);
toolBar.add(button2);
toolBar.add(button3);
toolBar.add(toolT