刚刚下了个eclipse,有很多东西还不是很懂,麻烦您帮帮我
为什么下边一段代码运行完了,我看不到结果呢?
没有办法,虽然是一个很简单的问题,但我真的不知道到底是怎么回事,麻烦您了!谢谢
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.Timer;
public class TimeTest
{
public static void main(String[] args)
{
ActionListener listener = new TimePrinter();
Timer t = new Timer(1000,listener);
t.start();
System.out.println("Hello world!");
}
}
class TimePrinter implements ActionListener
{
public TimePrinter()
{}
public void actionPerformed(ActionEvent event)
{
Date now = new Date();
System.out.println("a"+now);
Toolkit.getDefaultToolkit().beep();
}
}
为什么下边一段代码运行完了,我看不到结果呢?
没有办法,虽然是一个很简单的问题,但我真的不知道到底是怎么回事,麻烦您了!谢谢
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.Timer;
public class TimeTest
{
public static void main(String[] args)
{
ActionListener listener = new TimePrinter();
Timer t = new Timer(1000,listener);
t.start();
System.out.println("Hello world!");
}
}
class TimePrinter implements ActionListener
{
public TimePrinter()
{}
public void actionPerformed(ActionEvent event)
{
Date now = new Date();
System.out.println("a"+now);
Toolkit.getDefaultToolkit().beep();
}
}
为什么会这样呢,能不能指教一下
麻烦您了
应该是你的console view没有打开?
import java.util.Date;
import java.util.*;public class TimeTest {
public TimeTest()
{
TimerTask task = new TimerTask() {
public void run() {
Date now = new Date(); System.out.println("a" + now);
Toolkit.getDefaultToolkit().beep();
}
};
Timer timer = new Timer();
timer.schedule(task, 0, 1000);
}
public static void main(String[] args) {
TimeTest it=new TimeTest();
}
}——————————————————————————————————————import java.awt.*;
import java.awt.event.*;
import java.util.Date;
import javax.swing.*;public class TimeTest2 { public static void main(String[] args) {
ActionListener listener = new TimePrinter();
Timer t = new Timer(1000, listener);
t.start();
//System.out.println("Hello world!");
Frame frame=new Frame();
frame.show();
}
}class TimePrinter implements ActionListener {
public TimePrinter() {
} public void actionPerformed(ActionEvent event) { Date now = new Date(); System.out.println("a" + now);
Toolkit.getDefaultToolkit().beep();
}
}