import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.Timer;
public class Java_3
{
public static void main(String[] args)
{
TimePrinter listener=new TimePrinter();
Timer t=new Timer(1000,listener);
t.start();
JOptionPane.showMessageDialog(null,"退出程序");
System.exit(0);
}
}
class TimePrinter implements ActionListener // 这个地方怎么有错误啊?
{
public void actionPerformered(ActionEvent event)
{
i++;
System.out.println(i);
Toolkit.getDefaultToolkit().beep();
}
int i=0;
}
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.Timer;
public class Java_3
{
public static void main(String[] args)
{
TimePrinter listener=new TimePrinter();
Timer t=new Timer(1000,listener);
t.start();
JOptionPane.showMessageDialog(null,"退出程序");
System.exit(0);
}
}
class TimePrinter implements ActionListener // 这个地方怎么有错误啊?
{
public void actionPerformered(ActionEvent event)
{
i++;
System.out.println(i);
Toolkit.getDefaultToolkit().beep();
}
int i=0;
}
void actionPerformed(ActionEvent e)
要override接口中的abstract方法,当然需要同名方法了。