单选题程序: class MyDate{ private int year; private int month; private int day; public MyDate(int year,int month,int day){ this.year=year; this.month=month; this.day=day; } //Override Method } 为了让new MyDate(1980,11,9)==new MyDate(1980,11,9) 返回true,必须在Override Method处覆盖哪个方法?()A hashCodeB equalsC toStringD notify
单选题
程序: class MyDate{ private int year; private int month; private int day; public MyDate(int year,int month,int day){ this.year=year; this.month=month; this.day=day; } //Override Method } 为了让new MyDate(1980,11,9)==new MyDate(1980,11,9) 返回true,必须在Override Method处覆盖哪个方法?()
A
hashCode
B
equals
C
toString
D
notify
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