datetime.java~9~

来自「图书管理系统,B/S,C/S都有,附有源代码」· JAVA~9~ 代码 · 共 60 行

package database;

import java.util.*;

/**
 * <p>Title: library</p>
 * <p>Description: library</p>
 * <p>Copyright: Copyright (c) 2007</p>
 * <p>Company: </p>
 * @author nino
 * @version 0.1
 */

public class DateTime {

  /**
   * 取年日期时间
   * @return String 返回 yyyy-MM-dd HH:mm:ss
   */
  public static String getDateTime() {
    java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat(
        "yyyy-MM-dd HH:mm:ss");
    java.util.Date currentTime = new java.util.Date(); //得到当前系统时间
    String newDateTime = formatter.format(currentTime); //将日期时间格式化
    return newDateTime;
  }

  public static String getDate() {
    java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat(
        "yyyy-MM-dd");
    java.util.Date currentTime = new java.util.Date(); //得到当前系统时间
    String newDate = formatter.format(currentTime); //将日期格式化
    return newDate;
  }

  public boolean compareDate(String newDate1, String newDate2) {

    String[] SD1 = newDate1.split("-");
    String[] SD2 = newDate2.split("-");

    Calendar CD1 = Calendar.getInstance();
    Calendar CD2 = Calendar.getInstance();

    CD1.set(Integer.parseInt(SD1[0]), Integer.parseInt(SD1[1]),
            Integer.parseInt(SD1[2]), 0, 0, 0);
    CD2.set(Integer.parseInt(SD2[0]), Integer.parseInt(SD2[1]),
            Integer.parseInt(SD2[2]), 0, 0, 0);

    int days = (int) ( (CD1.getTimeInMillis() - CD2.getTimeInMillis()) /
                      86400000);
    if (days >= 0) {
      return true;
    }
    else {
      return false;
    }

  }

}