IDEA分别导出可引用Jar包 和 可执行Jar包

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一、可引用Jar包

1、码代码

示例代码，实际按需

package com.cn;

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

public class DateUtil {

    static final SimpleDateFormat fmt1 = new SimpleDateFormat("yyyy-MM-dd 00:00:00");
    static final SimpleDateFormat fmt2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    static final SimpleDateFormat fmt3 = new SimpleDateFormat("yyyy-MM-dd 23:59:59");

    /**
     * get the start time of the day
     */
    public Date getStart(Date date) throws ParseException {
        return fmt2.parse(fmt1.format(date));
    }

    /**
     * get the end time of the day
     */
    public Date getEnd(Date date) throws ParseException {
        return fmt2.parse(fmt3.format(date));
    }

}

2、配置 Artifacts

File → Project Structure → Project Settings → Artifacts → ＋→ JAR → Empty

3、生成 JAR

    

二、可执行Jar包 

1、码代码 

示例代码，实际按需

package com.cn;
 
import java.text.SimpleDateFormat;
import java.util.Date;
 
public class TimeLoop {
 
    public static void main(String[] args) {
        try {
            SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            while (true) {
                Thread.sleep(998);
                System.out.println(fmt.format(new Date()));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
}

 

2、配置 Artifacts

（1）File → Project Structure → Project Settings → Artifacts → ＋→ JAR → From modules..

（2）配置 Main Class 

（3）OK

3、生成 JAR