search
HomeJavaJavaBaseHow to get time in java

How to get time in java

Nov 11, 2019 pm 05:13 PM
java

How to get time in java

How to get the time in java

1. Get the current system time and date and format the output: (Recommended tutorial: java tutorial)

import java.util.Date;
import java.text.SimpleDateFormat;
public class NowString {
    public static void main(String[] args) { 
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式
        System.out.println(df.format(new Date()));// new Date()为获取当前系统时间
    }
}

2. The date in the database is only output in the form of year-month-day. You can use the following two methods :

1. Use convert() conversion function:

String sqlst = "select convert(varchar(10),bookDate,126) as convertBookDate from roomBook where bookDate between '2007-4-10' and '2007-4-25'";
System.out.println(rs.getString("convertBookDate"));

2. Use SimpleDateFormat class:

First enter two java packages:

import java.util.Date;
import java.text.SimpleDateFormat;

Then define the date format:

SimpleDateFormat sdf = new SimpleDateFormat(yy-MM-dd);

The sql statement is:

String sqlStr = "select bookDate from roomBook where bookDate between '2007-4-10' and '2007-4-25'";

Output:

System.out.println(df.format(rs.getDate("bookDate")));

Method to get the current date and time in java

import java.util.Date; 
import java.util.Calendar; 
import java.text.SimpleDateFormat; 
public class TestDate{ 
    public static void main(String[] args){ 
        Date now = new Date(); 
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");//可以方便地修改日期格式
        String hehe = dateFormat.format( now ); 
        System.out.println(hehe); 
        Calendar c = Calendar.getInstance();//可以对每个时间域单独修改
 
        int year = c.get(Calendar.YEAR); 
        int month = c.get(Calendar.MONTH); 
        int date = c.get(Calendar.DATE); 
        int hour = c.get(Calendar.HOUR_OF_DAY); 
        int minute = c.get(Calendar.MINUTE); 
        int second = c.get(Calendar.SECOND); 
        System.out.println(year + "/" + month + "/" + date + " " +hour + ":" +minute + ":" + second); 
    } 
}

Sometimes you need to convert the time of String type into Date type. You can convert the time string you just got into Date type in the following way.

SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
java.util.Date time=null;
try {
   time= sdf.parse(sdf.format(new Date()));
} catch (ParseException e) {
   e.printStackTrace();
}

The above is the detailed content of How to get time in java. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.