java如何在一個文本框動態(tài)顯示時間?

package?cn.test;

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import?java.text.SimpleDateFormat;

import?java.util.Date;

import?java.util.Timer;

import?javax.swing.JFrame;

import?javax.swing.JTextField;

public?class?Time?extends?JFrame?{

private?JTextField?TimeBox?=?new?JTextField();

private?Timer?timer?=?new?Timer()?;

private?SimpleDateFormat?sdf?=?new?SimpleDateFormat("HH:mm:ss");

public?Time()?{

TimeBox.setBounds(0,?0,?100,?50);

add(TimeBox);

//方法1?定時器方法?

//????????TimerTask?task?=?new?TimerTask()?{

//????????????@Override

//????????????public?void?run()?{

//????????????????TimeBox.setText(sdf.format(new?Date()));

//????????????}

//????????};

//????????timer.schedule(task,?1000,1000)?;

//方法2?線程休眠方法?

Display?timedisplay?=?new?Display();

timedisplay.start()?;

}

private?class?Display?extends?Thread?{

SimpleDateFormat?sdf?=?new?SimpleDateFormat("HH:mm:ss");

public?Display()?{

System.out.println("display");

}

@Override

public?void?run(){

while(true){

System.out.println(?"Thread?is?running..."?);????

TimeBox.setText(sdf.format(new?Date()));

try?{

Thread.sleep(1000)?;

}?catch?(InterruptedException?e)?{

System.out.println("sleep?error!!");

e.printStackTrace();

}

}

}

}

public?static?void?main(String[]?args)?{

Time?t?=?new?Time()?;

t.setSize(300,?200)?;

t.setResizable(false)?;

t.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

t.setVisible(true)?;

}

}

一段顯示當(dāng)下時間的JAVA代碼

private?Shape?rect;????????????//背景矩形

private?Font?font;????????????//設(shè)置字體

private?Date?date;????????????//現(xiàn)在的時間

private?Thread?time;????????//時間線程

private?CanvasPanel?canvas;

public?static?void?main(String[]?args)?{

new?TimerTest20140930();

}

public?TimerTest20140930(){

super("繪制文本");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setSize(400,300);

rect?=?new?Rectangle2D.Double(10,10,200,100);

font?=?new?Font("宋體",Font.BOLD,16);

canvas=new?CanvasPanel();

add(canvas);

time?=?new?Thread(new?Runnable(){

public?void?run(){

while(true){

canvas.repaint();

try{

Thread.sleep(1000);

}catch(Exception?ex){

}

}

}

});

time.start();

setLocationRelativeTo(null);

setVisible(true);

}??

class?CanvasPanel?extends?Canvas?{

public?void?paint(Graphics?g){

super.paint(g);

Graphics2D?g2?=?(Graphics2D)?g;

g2.setColor(Color.BLACK);

g2.fill(rect);

g2.setColor(Color.BLUE);

g2.setFont(font);

g2.drawString("現(xiàn)在的時間是",?20,?30);

date?=?new?Date();

g2.drawString(String.format("%tr",?date),?50,?60);???????

}

}

在java中，要如何在一個文本框動態(tài)顯示時間?

html

head

title時鐘特效/title

script type="text/javascript"

function disptime(){

var today = new Date(); //獲得當(dāng)前時間

var hh = today.getHours(); //獲得小時、分鐘、秒

var mm = today.getMinutes();

var ss = today.getSeconds();

/*設(shè)置div的內(nèi)容為當(dāng)前時間*/

document.getElementById("myclock").innerHTML="h1現(xiàn)在是："+hh+":"+mm+":"+ss+"h1";

document.getElementById("myClock1").value=hh+":"+mm+":"+ss;

/*

使用setTimeout在函數(shù)disptime()體內(nèi)再次調(diào)用setTimeout

設(shè)置定時器每隔1秒（1000毫秒），調(diào)用函數(shù)disptime()執(zhí)行，刷新時鐘顯示

*/

var myTime=setTimeout("disptime()",1000);

}

/script

/head

body onload="disptime()"

div id="myclock"/div

input type="text" id="myClock1" value=""/input

/body

/html