Java.util.Date.compareTo() 方法 Java.util.Date.clone() 方法 Java.util.Date.equals() 方法 Java.util.Date.compareTo() 方法 package com.codingdict; import java.util.*; public class DateDemo { public static void main(String[] args) { // create two dates Date date = new Date(98, 5, 21); Date date2 = new Date(99, 1, 9); // make 3 comparisons with them int comparison = date.compareTo(date2); int comparison2 = date2.compareTo(date); int comparison3 = date.compareTo(date); // print the results System.out.println("Comparison Result:" + comparison); System.out.println("Comparison2 Result:" + comparison2); System.out.println("Comparison3 Result:" + comparison3); } } Java.util.Date.clone() 方法 Java.util.Date.equals() 方法