包含java计时10秒代码的词条

java等待10秒在运行怎么写代码

Thread.sleep(10000).

交出线程占用CPU时间十秒钟.

单位是毫秒.

相关问答

Q1: 怎样用JAVA写一个10钟倒计时程序?

import java.awt.Color;

import java.util.*;

import java.awt.*;

import java.applet.*;

public class Clock extends Applet implements Runnable

{

Thread timer=null;

Label label;

int lastxs=50,lastys=30,lastxm=50,lastym=30,lastxh=50,lastyh=30;

public void init()

{

label=new Label(" ");

setBackground(Color.white);

add(label);

}

public void paint(Graphics g)

{

int xh,yh,xm,ym,xs,ys,s,m,h,xcenter,ycenter;

Date rightnow=new Date();

String today=rightnow.toLocaleString();

label.setText(today);

s=rightnow.getSeconds();

m=rightnow.getMinutes();

h=rightnow.getHours();

xcenter=100;

ycenter=80;

xs=(int)(Math.cos(s*3.14f/30-3.14f/2)*45+xcenter);

ys=(int)(Math.sin(s*3.14f/30-3.14f/2)*45+ycenter);

xm=(int)(Math.cos(m*3.14f/30-3.14f/2)*45+xcenter);

ym=(int)(Math.sin(m*3.14f/30-3.14f/2)*45+ycenter);

xh=(int)(Math.cos((h*30+m*2)*3.14f/180-3.14f/2)*30+xcenter);

yh=(int)(Math.sin((h*30+m*2)*3.14f/180-3.14f/2)*30+ycenter);

g.setFont(new Font("TimesToman",Font.PLAIN,14));

g.setColor(Color.orange);

g.fill3DRect(xcenter-50,ycenter-50,100,100,true);

g.setColor(Color.darkGray);

g.drawString("12",xcenter-5,ycenter-37);

g.drawString("3",xcenter+40,ycenter+3);

g.drawString("6",xcenter-3,ycenter+45);

g.drawString("9",xcenter-45,ycenter+3);

g.setColor(Color.orange);

if(xs!=lastxs||ys!=lastys)

{

g.drawLine(xcenter,ycenter,lastxs,lastys);

}

if(xm!=lastxm||ym!=lastym)

{

g.drawLine(xcenter,ycenter-1,lastxm,lastym);

g.drawLine(xcenter-1,ycenter,lastxm,lastym);

}

if(xh!=lastxh||yh!=lastyh)

{

g.drawLine(xcenter,ycenter-1,lastxh,lastyh);

g.drawLine(xcenter-1,ycenter,lastxh,lastyh);

}

g.setColor(Color.red);

g.drawLine(xcenter,ycenter,xs,ys);

g.drawLine(xcenter,ycenter-1,xm,ym);

g.drawLine(xcenter-1,ycenter,xm,ym);

g.drawLine(xcenter,ycenter-1,xh,yh);

g.drawLine(xcenter-1,ycenter,xh,yh);

lastxs=xs;

lastys=ys;

lastxm=xm;

lastym=ym;

lastxh=xh;

lastyh=yh;

}

public void start()

{

if(timer==null)

{

timer=new Thread(this);

timer.start();

}

}

public void stop()

{

timer=null;

}

public void run()

{

while(timer!=null)

{

try

{

Thread.sleep(1000);

}catch(InterruptedException ie){}

repaint();

}

timer=null;

}

public void update(Graphics g)

{

paint(g);

}

}

Q2: 求人用java编写一条计时器代码。

import java.awt.BorderLayout;

import java.awt.Container;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowEvent;

import java.awt.event.WindowListener;

import java.io.*;

import java.util.*;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.plaf.OptionPaneUI;

public class Demo {

static boolean isRuning=false;

static boolean isFirst=true;

@SuppressWarnings("unchecked")

public static void main(String[] args) throws Exception {

JFrame form1 = new JFrame("Form1");

JTextField jTextField = new JTextField(10);

jTextField.setSize(10, 10);

jTextField.setText("0");

jTextField.setEditable(false);

JButton jButton = new JButton("开始");

jButton.setSize(10, 10);

Thread thread = new Thread(new Runnable() {

@Override

public void run() {

while (true) {

while(isRuning){

Integer counter = Integer.parseInt(jTextField.getText().trim());

counter++;

jTextField.setText(counter.toString());

try {

Thread.sleep(1000);

} catch (Exception e2) {

}

}

}

}

});

jButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

   String text=jButton.getText().equals("开始")?"暂停":"开始";

   jButton.setText(text);

   isRuning=!isRuning;

   if(isFirst){

   thread.start();

   isFirst=false;

   }

}

});

JPanel panel = new JPanel();

panel.setSize(200, 200);

panel.add(jTextField, BorderLayout.NORTH);

panel.add(jButton, BorderLayout.CENTER);

form1.add(panel);

form1.setBounds(200, 100, 250, 150);

form1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

form1.addWindowListener(new WindowListener() {

@Override

public void windowOpened(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowIconified(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowDeiconified(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowDeactivated(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowClosing(WindowEvent e) {

               // 窗口关闭前取出文本框的数字保存到外部文件，代码在此处写

JOptionPane.showMessageDialog(null, "Are you sure closing?");

}

@Override

public void windowClosed(WindowEvent e) {

// TODO Auto-generated method stub

}

@Override

public void windowActivated(WindowEvent e) {

// TODO Auto-generated method stub

}

});

form1.setVisible(true);

}

}

Q3: 写一个计时器 JAVA代码是什么？

应该用线程里面的Timer来控制package com.sy.game.test;

import java.util.Timer;

import java.util.TimerTask;

public class TimeTask {

public static void main(String[] args) {

TimeTask tTask=new TimeTask();

tTask.timeVoid();

}

public void timeVoid(){

final Timer timer = new Timer();

TimerTask tt=new TimerTask() {

@Override

public void run() {

System.out.println("到点啦!");

timer.cancel();

}

};

timer.schedule(tt, 3000);

}

}

整合的：

/*

* java倒计时器

* shiyang

* */

package com.sy.game.test;

import java.awt.Container;

import java.awt.FlowLayout;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.Timer;

@SuppressWarnings("unused")

public class TimeController extends JFrame implements ActionListener {

private static final long serialVersionUID = 4603262282860990473L;

private static final int DEFAULT_WIDTH = 200;

private static final int DEFAULT_HEIGHT = 100;

private static final int width = Toolkit.getDefaultToolkit()

.getScreenSize().width;

private static final int height = Toolkit.getDefaultToolkit()

.getScreenSize().height;

private Container container;

private JButton btn;

private JTextField jtfTime;

private Timer tmr;

public TimeController() {

initComponents();

Timer tmr = new Timer(1000, this);

this.tmr = tmr;

setVisible(true);

}

private void initComponents() {

this.setTitle("SY秒表");

this.setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

this.setResizable(false);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setLocation((width - DEFAULT_WIDTH) / 2,

(height - DEFAULT_HEIGHT) / 2);

jtfTime = new JTextField("10");

btn = new JButton("开始倒计时");

container = getContentPane();

JPanel panel = new JPanel();

panel.add(btn);

panel.add(jtfTime);

this.add(panel);

btn.addActionListener(this);

}

public void actionPerformed(ActionEvent ae) {

if (ae.getSource() == btn) {

jtfTime.setText("10");

tmr.start();

} else {

int t;

t = Integer.parseInt(jtfTime.getText());

t--;

jtfTime.setText("" + t);

if (t = 0) {

tmr.stop();

}

}

}

public static void main(String[] args) {

TimeController timeController = new TimeController();

}

}

关于java计时10秒代码和的介绍到此就结束了，不知道你从中找到你需要的信息了吗 ？如果你还想了解更多这方面的信息，记得收藏关注本站。