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java时分秒,java时分秒转换

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Java 如何把输入的时分秒转换再输出为秒数?

import java.util.Scanner;

public class Convert{

public static void main(String[] args){

System.out.println("请输入时分秒,格式为hh:mi:ss");

Scanner input=new Scanner(System.in);

String s=input.next();

int index1=s.indexOf(":");

int index2=s.indexOf(":",index1+1);

int hh=Integer.parseInt(s.substring(0,index1));

int mi=Integer.parseInt(s.substring(index1+1,index2));

int ss=Integer.parseInt(s.substring(index2+1));

System.out.println(hh*60*60+mi*60+ss);

}

}

java如何获取当前时间 年月日 时分秒

//得到long类型当前时间

long l = System.currentTimeMillis();

//new日期对

Date date = new Date(l);

//转换提日期输出格式

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-

dd HH:mm:ss");System.out.println(dateFormat.format(date));

扩展资料

package com.ob;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

public class DateTest {

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

Calendar now = Calendar.getInstance();

System.out.println("年: " + now.get(Calendar.YEAR));

System.out.println("月: " + (now.get(Calendar.MONTH) + 1) + "");

System.out.println("日: " + now.get(Calendar.DAY_OF_MONTH));

System.out.println("时: " + now.get(Calendar.HOUR_OF_DAY));

System.out.println("分: " + now.get(Calendar.MINUTE));

System.out.println("秒: " + now.get(Calendar.SECOND));

System.out.println("当前时间毫秒数:" + now.getTimeInMillis());

System.out.println(now.getTime());

\t\tDate d = new Date();

System.out.println(d);

\t\tSimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

\t\tString dateNowStr = sdf.format(d);

System.out.println("格式化后的日期:" + dateNowStr);

\t\t

\t\tString str = "2012-1-13 17:26:33";

//要跟上面sdf定义的格式一样

\t\tDate today = sdf.parse(str);

System.out.println("字符串转成日期:" + today);

\t}

}

参考资料:Java - 百度百科

JAVA将时分秒格式的时间转化成秒数

public class TimeToSecond {

public static void main(String[] args) {

String time ="01:22:12";

String[] my =time.split(":");

int hour =Integer.parseInt(my[0]);

int min =Integer.parseInt(my[1]);

int sec =Integer.parseInt(my[2]);

int zong =hour*3600+min*60+sec;

System.out.println("共"+zong+"秒");

}

}

扩展资料

java将毫秒值转换为日期时间

public static void main(String[] args) {

long milliSecond = 1551798059000L;

Date date = new Date();

date.setTime(milliSecond);

System.out.println(new SimpleDateFormat().format(date));

}