高手帮忙看下代码有关问题出在那里
日期：2014-05-20 浏览次数：20744 次
高手帮忙看下代码问题出在那里
------解决方案--------------------
上面写错了，你是程序忘记写一个for语句了吧.
class DR implements Runnable
{
int i = 0 ;
public void run ( )
{
for(int i = 0 ; i< 100; i++) {
System.out.println ( i ++ ) ;
try
{
String name = Thread.currentThread().getName();
System.out.println ("name ="+name) ;
Thread.currentThread ( ).sleep (1000 ) ;
} catch ( InterruptedException ex )
{
ex.printStackTrace ( ) ;
}
}
}
}
- Java code
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class GWindows extends JFrame
{
public GWindows()
{
super("123");
setSize(246,351);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setResizable(false);
this.setVisible(true);
}
}
class DR implements Runnable
{
int i=0;
public void run()
{
System.out.println(i++);
try
{
Thread.currentThread().sleep(100);
} catch (InterruptedException ex)
{
ex.printStackTrace();
}
}
}
class DC implements KeyListener
{
public void keyPressed(KeyEvent e)
{
}
public void keyReleased(KeyEvent e)
{
}
public void keyTyped(KeyEvent e)
{
}
}
class G extends JPanel implements Runnable
{
Thread thread1,thread2;
DR dr=new DR();
DC dc=new DC();
public G()
{
GWindows gwindows =new GWindows();
gwindows.getContentPane().add(this);
gwindows.addKeyListener(dc);
thread1=new Thread(dr);
thread1.start();
thread2=new Thread(this);
thread2.start();
}
public void paint(Graphics g)
{
super.paint(g);
Color save_color=g.getColor();
g.setColor(new Color(255,255,0));
g.fillRect(0,0,240,320);
}
public void run()
{
while(true)
{
repaint();
try
{
thread2.sleep(100);
} catch (InterruptedException ex)
{
ex.printStackTrace();
}
}
}
}
public class Test{
public static void main(String[] args)
{
new G();
}
}
thread1这个线程怎么不会执行
i不会持续打印输出
------解决方案--------------------
上面写错了，你是程序忘记写一个for语句了吧.
class DR implements Runnable
{
int i = 0 ;
public void run ( )
{
for(int i = 0 ; i< 100; i++) {
System.out.println ( i ++ ) ;
try
{
String name = Thread.currentThread().getName();
System.out.println ("name ="+name) ;
Thread.currentThread ( ).sleep (1000 ) ;
} catch ( InterruptedException ex )
{
ex.printStackTrace ( ) ;
}
}
}
}
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