JAVA日期

roomy

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