date5.java.bak

Java基础教程课程中的例题源码下载。总共有11章

public abstract class Date5 
{
    public abstract boolean isValid(int year,int month,int day);
    public abstract Date5   tomorrow();
    public abstract Date5   yestoday();
    public abstract Date5   daysAfter(int days);
    public abstract int     between(Date5 d2);
}