JAVA日期

示例:

import java.util.Calendar;

public class TimeDemo {

// 获取当前时间
private static String getLoginTime() {
   Calendar cal = Calendar.getInstance();
   StringBuffer time = new StringBuffer("");
   time.append(cal.get(Calendar.HOUR_OF_DAY));
   time.append("时");
   time.append(cal.get(Calendar.MINUTE));
   time.append("分");
   time.append(cal.get(Calendar.SECOND));
   time.append("秒");
   return time.toString();
}

// 获取当前日期
private static String getLoginDate() {
   Calendar cal = Calendar.getInstance();
   StringBuffer time = new StringBuffer("");
   time.append(cal.get(Calendar.YEAR));
   time.append("年");
   time.append(cal.get(Calendar.MONTH) + 1);
   time.append("月");
   time.append(cal.get(Calendar.DATE));
   time.append("日");
   return time.toString();
}
 // 获取当前星期
private static String getLoginWeek() {
   Calendar cal = Calendar.getInstance();
   StringBuffer time = new StringBuffer("");
   time.append("星期");
   int num = cal.get(Calendar.DAY_OF_WEEK);
   switch (num) {
   case 1:
    time.append("日");
    break;
   case 2:
    time.append("一");
    break;
   case 3:
    time.append("二");
    break;
   case 4:
    time.append("三");
    break;
   case 5:
    time.append("四");
    break;
   case 6:
    time.append("五");
    break;
   case 7:
    time.append("六");
    break;
   }
   return time.toString();
}
 // 测试
public static void main(String[] args) {
   System.out.println(getLoginDate());
   System.out.println(getLoginWeek());
   System.out.println(getLoginTime());
 }
}

 

结果:

           2010年3月12日
           星期五
           11时26分51秒