打印当前时间。学习使用Date类和Calendar类

import java.util.Calendar;
import java.util.Date;

public class showTime {
public static void main(String args[]) {
Date date=new Date();
System.out.println("当前时间为:"+date);

Calendar calendar = Calendar.getInstance();
System.out.println("当前时间为:"+calendar.getTime());
System.out.println("分开打印（推荐使用）：当前时间为："+calendar.get(calendar.YEAR)+"年"+calendar.get(calendar.MONTH)+"月"+calendar.get(calendar.DAY_OF_MONTH)+"日"
+calendar.get(calendar.HOUR)+"时"+calendar.get(calendar.MINUTE)+"分"+calendar.get(calendar.SECOND)+"秒");
}
}