在java age计算中返回错误的值

使用joda-time

您可以使用Period在joda timeapi中实现此功能.尝试这样的事情:

Period period = new Period(d1, d2);// d1,d2 are Date objects
System.out.print("You are " + period.getYears() + " years old");

使用java.time

如果你可以使用java.time类LocalDate和Java 8或更高版本Period,那么它可以这样实现:

        LocalDate today = LocalDate.now();
        LocalDate birthday = LocalDate.of(1990, Month.DECEMBER, 12);

        Period p = Period.between(birthday, today);
        System.out.println("You are " + p.getYears() + " years old");

产量

You are 25 years old