求大神们帮忙看一下这个倒计时代码
程序代码:package 计时器1;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
class Show extends JFrame//倒计时面板。
{
Button but1,but2,but3;
JTextField jt;
JPanel jp1,jp2;
public void inint()//面板的初始化
{
but1=new Button("开始");
but2=new Button("暂停");
but3=new Button("继续");
jt=new JTextField("00:00:00",10);
jp1=new JPanel();
jp2=new JPanel();
jp1.add(jt);
jp2.add(but1);
jp2.add(but2);
jp2.add(but3);
this.setTitle("倒计时");
this.setLayout(new BorderLayout());
this.add("North",jp1);
this.add("Center",jp2);
this.setVisible(true);
this.setBounds(200, 200, 200, 200);
but1.addActionListener(new ActionListener()
{
//接口,计算总秒数。并且开启线程
@Override
public void actionPerformed(ActionEvent e)
{
int second=0;
String[] s=null;
if(jt.getText().equals("00:00:00"))
javax.swing.JOptionPane.showMessageDialog(null, "请输入计时的总时间");
else
{
s=jt.getText().split(":");//把字符串按照字符":"拆分,反回的值是字符串数组。
int[] count=new int[3];
for(int i=0;i<3;i++)
count[i]=Integer.parseInt(s[i]);//把字符串转化为整形。
second=second+count[0]*(int)Math.pow(60, 2)+count[1]*(int)Math.pow(60, 1)+count[2];//计算总秒数
Show sh=new Show();
Mythread my=new Mythread(second,sh);
Thread t=new Thread(my);
t.start();
}
}
});
// but2.addActionListener();
}
}
class Mythread implements Runnable//线程
{
Show sh;
boolean flage=true;
private int s=0;
private int second=0;
public Mythread(int s,Show sh)
{
this.s=s;
this.sh=sh;
}
public void set(boolean flage)
{
this.flage=flage;
}
public void run()
{
try
{
while(flage==true)
{
if(s>=0)
{
display(this.s);
Thread.sleep(1000);
this.s--;
}
else
break;
}
} catch (InterruptedException e) {}
}
public void display(int second)//显示倒计时
{
int h=0,m=0;
while(second>=60)
{
m=m+(second/60);
second=second%60;
}
while(m>=60)
{
h=h+(m/60);
m=m%60;
}
sh.jt.setText(h+":"+m+":"+second);
}
}
public class JiShi2
{
public static void main(String[] args)
{
new Show().inint();
}
}
请问怎么回事啊!!![ 本帖最后由 笔墨痕干 于 2014-11-24 14:22 编辑 ]









