e1602.java

java小程序

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
public class E1602 extends JApplet implements Runnable
{
private Color[] color={Color.red,Color.green,Color.blue};
private Thread t;
private int sleepTime;
private String strValue;
private int n=0;

public void init()
{
String str2=getParameter("sleep");
sleepTime=(str2==null)?500:Integer.parseInt(str2);
String str1=getParameter("str");
strValue=(str1==null)?"没有输入字符串":str1;
}
public void paint(Graphics g)
{
if(n%color.length==0)
{
g.setColor(color[0]);
g.drawString(strValue,50,50);
}
else if(n%color.length==1)
{
g.setColor(color[1]);
g.drawString(strValue,50,50);
}
else if(n%color.length==2)
{
g.setColor(color[2]);
g.drawString(strValue,50,50);
}
n++;
}
public void start()
{
t=new Thread(this);
t.start();
}

public void run()
{
while(true)
{
try
{
Thread.currentThread().sleep(sleepTime);
}
catch(InterruptedException e){};
repaint();
}
}
}