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Date??????????????????????????Calendar????Date???????????????????????????????

????????

Date date1 = new Date();
System.out.println("?????" + date1.toString());
System.out.println("????????????" + date1.toLocaleString());

????????????????????????????

long currentTime = date1.getTime();
Date date2 = new Date currentTime - (60 * 60 * 24 * 1000);
System.out.println("???????" + date2.toLocaleString());

???????Date?????after?before????????Date???????????

System.out.println("date1?date2???" + date1.after(date2)); // true
System.out.println("date1?date2???" + date1.before(date2)); // false

???Date?????compareTo??????????

System.out.println("??????" + date1.compareTo(date2)); // 1

???????Date??equals?????????????????

System.out.println("???????" + date1.equals(date2)); // false

????Date???????????????????????????????????????