import java.awt.*;
import javax.swing.*;
import java.util.*;
public class HeadLine extends JFrame
{
HeadLinePanel news = new HeadLinePanel();
public HeadLine()
{
super("HeadLines");
setSize(420,100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel pane = new JPanel();
pane.setLayout(new GridLayout(1,1,15,15));
pane.add(news);
setContentPane(pane);
pane.setVisible(true);
news.setVisible(true);
news.scroll();
}
public static void main(String[] argument)
{
HeadLine head = new HeadLine();
ExitWindow exit = new ExitWindow();
head.addWindowListener(exit);
}
}
class HeadLinePanel extends JPanel
{
String[] headlines = {
"Grandmother of Eight Makes Hole in One","Folice Begin Campaign to Run Down Jaywalkers",
"Dr.Ruth to Talk About Sex with Newspaper Editors","Enraged Cow Injures Farmer with Axe"};
int y = 76;
void scroll()
{
while(true)
{
y = y - 1 ;
if ( y < -75 )
y = 76 ;
repaint();
try{
Thread.sleep(250);
}
catch(InterruptedException e){}
}
}
public void paintComponent(Graphics comp)
{
Graphics2D comp2D = (Graphics2D)comp;
Font type= new Font("monospaced",Font.BOLD,14);
comp2D.setFont(type);
comp2D.setColor(getBackground());
comp2D.fillRect(0,0,getSize().width,getSize().height);
comp2D.setColor(Color.black);
for(int i = 0; i < headlines.length; i++)
{
comp2D.drawString(headlines,5,(y + i * 20));
}
}
}运行后，没结果
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