1. 灏忕▼搴忓紑鍙戜腑 new Date 璺ㄥ钩鍙板吋瀹规ч棶棰樺備綍瑙ｅ喅锛
鍦ㄧ炴佺煡灏忕▼搴忓紑鍙戜腑锛屼娇鐢 new Date() 鏂规硶涓嶄細鍑虹幇鍏煎规ч棶棰樸傛父娑堜絾鏄锛屽傛灉鎮ㄤ娇鐢 new Date(datetimeformatstring)锛屽彲鑳戒細鍑虹幇娴忚堝櫒鍏煎规ч棶棰橈紝鍥犱负 datetimeformatstring 涓鐨勬煇浜涙牸寮忔祻瑙堝櫒涓嶅吋瀹广
涓轰簡瑙ｅ喅娓ｇ珫杩欎釜闂棰橈紝鎮ㄥ彲浠ヤ娇鐢ㄤ竴浜涚涓夋柟搴擄紝渚嬪 moment.js銆乨ate-fns 绛夌瓑銆傝繖浜涘簱鍙浠ュ府鍔╂偍澶勭悊鏃ユ湡鍜屾椂闂存牸寮忥紝骞舵彁渚涙洿濂界殑璺ㄥ钩鍙板吋瀹规 銆
2. java鑾峰彇褰撳墠鏃堕棿鍔犲崐灏忔椂涔嬪悗鐨勬椂闂
涓銆佹ラゅ備笅锛
long currentTime = System.currentTimeMillis() + 30 * 60 * 1000銆
Date date = new Date(currentTime)銆
DateFormat df = new SimpleDateFormat(yyyy-MM-dd HH:mm:ss)銆係tring nowTime=銆俷owTime= df.format(date)銆係ystem.out.println(nowTime)銆
浜屻佸垎鏋愶細
1銆佽幏鍙栧綋鍓嶆椂闂达紝鑾峰彇鍒扮殑鏃堕棿绫诲瀷鏄痩ong绫诲瀷鐨勶紝鍗曚綅鏄姣绉
2銆佸湪杩欎釜鍩虹涓婂姞涓30鍒嗛挓锛歝urrentTime +=30*60*1000锛
3銆佹牸寮忓寲鏃堕棿锛岃幏鍙栧埌鐨勫氨鏄褰撳墠鏃堕棿鍗婁釜灏忔椂涔嬪悗鐨勬椂闂碊ate date=new Date(currentTime);
4銆佸缓绔嬫椂闂存牸寮忓寲瀵硅薄锛
SimpleDateFormat dateFormat = new SimpleDateFormat(yyyy-MM-dd HH:mm:ss)銆傛梾鎷︾
JDK锛圝ava Development Kit锛夌О涓篔ava寮鍙戝寘鎴朖ava寮鍙戝伐鍏凤紝鏄涓涓缂栧啓Java鐨勬媶鍏咥pplet灏忕▼搴忓拰搴旂敤绋嬪簭鐨勭▼搴忓紑鍙戠幆澧冦侸DK鏄鏁翠釜Java鐨勬牳蹇冿紝鍖呮嫭浜咼ava杩愯岀幆澧冿紙Java Runtime Envirnment锛夛紝涓浜汮ava宸ュ叿鍜孞ava鐨勬牳蹇冪被搴擄紙Java API锛夈
涓嶈轰粈涔圝ava搴旂敤鏈嶅姟鍣ㄥ疄璐ㄩ兘鏄鍐呯疆浜嗘煇涓鐗堟湰鐨凧DK銆備富娴佺殑JDK鏄疭un鍏鍙稿彂甯冪殑JDK锛岄櫎浜哠un涔嬪栵紝杩樻湁寰堝氬叕鍙稿拰缁勭粐閮藉紑鍙戜簡琛￠ⅳ鑷宸辩殑JDK锛屼緥濡傦紝IBM鍏鍙稿紑鍙戠殑JDK锛孊EA鍏鍙哥殑Jrocket锛岃繕鏈塆NU缁勭粐寮鍙戠殑JDK
鍙﹀栵紝鍙浠ユ妸Java API绫诲簱涓鐨凧ava SE API瀛愰泦鍜孞ava铏氭嫙鏈鸿繖涓ら儴鍒嗙粺绉颁负JRE锛圝AVA Runtime Environment锛夛紝JRE鏄鏀鎸丣ava绋嬪簭杩愯岀殑鏍囧噯鐜澧冦
3. 甯蹇欒В閲婁竴涓狫ava灏忕▼搴忥紙绉掕〃锛
package com.sofmit.tool;
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.*;import java.util.Date;
import java.text.SimpleDateFormat;
public class StopWatch extends JFrame {
JButton btnStart, btnStop;
JLabel label; Timer timer;
public StopWatch() {
label = new JLabel("鏁板拰00:00:00.000");
btnStart = new JButton("start");
btnStop = new JButton("stop");
final int delay = 100;
final Date startTime = new Date();
final SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss.S");
final Action taskPerformer = new AbstractAction() {
public void actionPerformed(ActionEvent evt)
{ //鏄剧ず鏃堕棿
Date d = new Date(System.currentTimeMillis() - startTime.getTime() - 28800000); label.setText(sdf.format(d)); label.repaint();
}
};
btnStart.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent evt) {
startTime.setTime(new Date().getTime());
timer = new Timer(delay, taskPerformer); timer.start(); } });
btnStop.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
if (timer != null && timer.isRunning())
timer.stop();
} });
Container c = getContentPane();
c.add(label, BorderLayout.NORTH);
c.add(btnStart, BorderLayout.CENTER);
c.add(btnStop, BorderLayout.SOUTH); }
public static void main(String[] args)
{
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() { createAndShowGUI(); } }); }
private static void createAndShowGUI() { StopWatch window = new StopWatch(); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); window.pack(); window.setVisible(true); }}
浣犱笅杞戒釜java鏂囨。锛屼腑鏂囩増钖鍥扮洴鐨勶紝鎴栬呭厛鐪嬬湅瀛欓懌鐨刯ava鏃犻毦浜嬶紝杩欐槸缁欏昂鎵掍綘鏈濂界殑鎬濊矾锛
4. 小程序 在前端怎么格式化后台返回的日期数据
var str="2017-11-17Tsdfsdfsdf";
str=str.replace(/(.*)T.*$/,"$1");