「java本地时区」java获取时区
本篇文章给大家谈谈java本地时区，以及java获取时区对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。
本文目录一览：
java中utc时间怎么转换为本地时间
JAVA中将UTC时间转换为本地时间的方法，其他的时区转换与此类似。
public static String utc2Local(String utcTime, String utcTimePatten,
String localTimePatten) {
SimpleDateFormat utcFormater = new SimpleDateFormat(utcTimePatten);
utcFormater.setTimeZone(TimeZone.getTimeZone("UTC"));//时区定义并进行时间获取
Date gpsUTCDate = null;
try {
gpsUTCDate = utcFormater.parse(utcTime);
} catch (ParseException e) {
e.printStackTrace();
}
SimpleDateFormat localFormater = new SimpleDateFormat(localTimePatten);
localFormater.setTimeZone(TimeZone.getDefault());
String localTime = localFormater.format(gpsUTCDate.getTime());
return localTime;
}
java中utc时间怎么转换为本地时间？
java utc转本地时间的方法：
1、创建一个格式化时间对象simpleDateFormat，并初始化格式yyyy-MM-dd HH:mm:ss：
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
2、创建时区对象utcZone，获取utc所在的时区
TimeZone utcZone = TimeZone.getTimeZone("UTC");
3、设置utc时区，为转换做准备
simpleDateFormat.setTimeZone(utcZone);
4、获取本地时间，并转换
Date myDate = simpleDateFormat.parse(rawQuestion.getString("AskDateTime"));
5，按照上面的流程就转换本地时间了。
java中如何获取时区？
//我实现一个时钟窗口程序给你了，好让你更容易理解，希望对你有帮助。\x0d\x0aimport java.awt.*;\x0d\x0aimport java.awt.event.*;\x0d\x0aimport java.util.*;\x0d\x0a\x0d\x0a//世界时钟\x0d\x0apublic class TimerTest {\x0d\x0apublic static void main(String[] args) {\x0d\x0anew TimerTestFrame("世界时钟");\x0d\x0a}\x0d\x0a}\x0d\x0a\x0d\x0aclass TimerTestFrame extends Frame {\x0d\x0a/**\x0d\x0a* \x0d\x0a*/\x0d\x0aprivate static final long serialVersionUID = 1L;\x0d\x0a\x0d\x0apublic TimerTestFrame(String s) {\x0d\x0asuper(s);\x0d\x0aaddWindowListener(new WindowAdapter() {\x0d\x0apublic void windowClosing(WindowEvent e) {\x0d\x0adispose();\x0d\x0aSystem.exit(0);\x0d\x0a}\x0d\x0a});\x0d\x0asetLayout(new GridLayout(2, 6));\x0d\x0a\x0d\x0aClockCanvas clk1 = new ClockCanvas("北京", "GMT+8"); // 创建时钟\x0d\x0aClockCanvas clk2 = new ClockCanvas("巴黎", "GMT+2");\x0d\x0aClockCanvas clk3 = new ClockCanvas("华盛顿", "GMT-4");\x0d\x0aClockCanvas clk4 = new ClockCanvas("洛衫矶", "GMT-7");\x0d\x0aClockCanvas clk5 = new ClockCanvas("伦敦", "GMT+1");\x0d\x0aClockCanvas clk6 = new ClockCanvas("芝加哥", "GMT-5");\x0d\x0aadd(clk1);\x0d\x0aadd(clk2);\x0d\x0aadd(clk3);\x0d\x0aadd(clk4);\x0d\x0aadd(clk5);\x0d\x0aadd(clk6);\x0d\x0asetSize(500, 350); // 设置框架宽高\x0d\x0asetVisible(true);\x0d\x0a}\x0d\x0a}\x0d\x0a\x0d\x0aclass ClockCanvas extends Canvas implements Runnable {\x0d\x0a/**\x0d\x0a* \x0d\x0a*/\x0d\x0aprivate static final long serialVersionUID = 1L;\x0d\x0a\x0d\x0aprivate int seconds = 0;\x0d\x0a\x0d\x0aprivate String city;\x0d\x0a\x0d\x0aprivate GregorianCalendar calendar;\x0d\x0a\x0d\x0aThread t;\x0d\x0a\x0d\x0apublic ClockCanvas(String c, String tz) {\x0d\x0acity = c;\x0d\x0a//也可以通过TimeZone.setTimeZone(String n)函数改变时区，n为时区参数名。\x0d\x0acalendar = new GregorianCalendar(TimeZone.getTimeZone(tz));\x0d\x0at = new Thread(this);\x0d\x0at.start();\x0d\x0asetSize(125, 125); // 设置画布大小\x0d\x0asetBackground(Color.black);\x0d\x0a}\x0d\x0a\x0d\x0a// 重写父类的方法绘制时钟图形\x0d\x0apublic void paint(Graphics g) {\x0d\x0aGraphics2Dg2d = (Graphics2D) g;\x0d\x0aBasicStroke bstroke = new BasicStroke(2.0f);\x0d\x0ag2d.setStroke(bstroke);\x0d\x0ag2d.setColor(Color.green);\x0d\x0ag2d.drawOval(0, 0, 100, 100);\x0d\x0abstroke = new BasicStroke(5.0f);\x0d\x0ag2d.setStroke(bstroke);\x0d\x0ag2d.drawLine(50, 0, 50, 5);\x0d\x0ag2d.drawLine(0, 50, 5, 50);\x0d\x0ag2d.drawLine(50, 95, 50, 98);\x0d\x0ag2d.drawLine(95, 50, 98, 50);\x0d\x0adouble hourAngle = 2 * Math.PI * (seconds - 3 * 60 * 60)\x0d\x0a/ (12 * 60 * 60);\x0d\x0adouble minuteAngle = 2 * Math.PI * (seconds - 15 * 60) / (60 * 60);\x0d\x0adouble secondAngle = 2 * Math.PI * (seconds - 15) / (60);\x0d\x0abstroke = new BasicStroke(5.0f);\x0d\x0ag2d.setStroke(bstroke);\x0d\x0ag2d.drawLine(50, 50, 50 + (int) (30 * Math.cos(hourAngle)),\x0d\x0a50 + (int) (30 * Math.sin(hourAngle)));\x0d\x0abstroke = new BasicStroke(3.0f);\x0d\x0ag2d.setStroke(bstroke);\x0d\x0ag2d.drawLine(50, 50, 50 + (int) (40 * Math.cos(minuteAngle)),\x0d\x0a50 + (int) (40 * Math.sin(minuteAngle)));\x0d\x0abstroke = new BasicStroke(1.0f);\x0d\x0ag2d.setStroke(bstroke);\x0d\x0ag2d.drawLine(50, 50, 50 + (int) (45 * Math.cos(secondAngle)),\x0d\x0a50 + (int) (45 * Math.sin(secondAngle)));\x0d\x0ag2d.setColor(Color.red);\x0d\x0ag2d.drawString(city, 35, 115);\x0d\x0a}\x0d\x0a\x0d\x0apublic void timeElapsed() {\x0d\x0a//new Date()()获得当前时间\x0d\x0aSystem.out.println(new Date()());\x0d\x0acalendar.setTime(new Date()());\x0d\x0aseconds = calendar.get(Calendar.HOUR) * 60 * 60\x0d\x0a+ calendar.get(Calendar.MINUTE) * 60\x0d\x0a+ calendar.get(Calendar.SECOND);\x0d\x0a}\x0d\x0a\x0d\x0apublic void run() {\x0d\x0atry {\x0d\x0awhile (true) {\x0d\x0aThread.sleep(300);\x0d\x0atimeElapsed();\x0d\x0arepaint();\x0d\x0a}\x0d\x0a} catch (InterruptedException e) {\x0d\x0a}\x0d\x0a}\x0d\x0a}
关于java本地时区和java获取时区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。