import java.awt.*;
import java.awt.event.*;
public class TestActionEvent2 {
public static void main(String[] args) {
Frame f = new Frame("Test");/////这里new出来一个对象,必须要调用构造方法,但这了没有调;但默认的构造方法没有参数,这个"test"怎么显示出来,请高手解释一下??????????????????
Button b1 = new Button("start");
Button b2 = new Button("stop");
Monitor bh = new Monitor();
b1.addActionListener(bh);
b2.addActionListener(bh);
b2.setActionCommand("game over");
f.add(b1,BorderLayout.NORTH);
f.add(b2,BorderLayout.CENTER);
f.pack();
f.setVisible(true);
}
} class Monitor implements ActionListener {
public void actionPerformed(ActionEvent e) {
System.out.println("a button jbeen pressed"+
"the relative info is:\n" + e.getActionCommand());
}
}
Button b1 = new Button("start");
Button b2 = new Button("stop");
Monitor bh = new Monitor();
b1.addActionListener(bh);
b2.addActionListener(bh);
b2.setActionCommand("game over");
f.add(b1,BorderLayout.NORTH);
f.add(b2,BorderLayout.CENTER);
f.pack();
f.setVisible(true);
}
} class Monitor implements ActionListener {
public void actionPerformed(ActionEvent e) {
System.out.println("a button jbeen pressed"+
"the relative info is:\n" + e.getActionCommand());
}
}
import java.awt.event.*;
public class TestActionEvent2 {
public static void main(String[] args) {
Frame f = new Frame("Test");/////这里new出来一个对象,必须要调用构造方法,但这了没有调;但默认的构造方法没有参数,这个"test"怎么显示出来,请高手解释一下??????????????????
Button b1 = new Button("start");
Button b2 = new Button("stop");
Monitor bh = new Monitor();
b1.addActionListener(bh);
b2.addActionListener(bh);
b2.setActionCommand("game over");
f.add(b1,BorderLayout.NORTH);
f.add(b2,BorderLayout.CENTER);
f.pack();
f.setVisible(true);
}
} class Monitor implements ActionListener {
public void actionPerformed(ActionEvent e) {
System.out.println("a button jbeen pressed"+
"the relative info is:\n" + e.getActionCommand());
}
}
Button b1 = new Button("start");
Button b2 = new Button("stop");
Monitor bh = new Monitor();
b1.addActionListener(bh);
b2.addActionListener(bh);
b2.setActionCommand("game over");
f.add(b1,BorderLayout.NORTH);
f.add(b2,BorderLayout.CENTER);
f.pack();
f.setVisible(true);
}
} class Monitor implements ActionListener {
public void actionPerformed(ActionEvent e) {
System.out.println("a button jbeen pressed"+
"the relative info is:\n" + e.getActionCommand());
}
}
解决方案 »
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