面向对象+JAVA基础

泛泛的研究了面向对象的前五章，感觉没有代码的参照理解的知识看过就忘，所以又在推荐下开始了JAVA基础，希望不会鄙视我目前么有一本书能完整看完的记录。。。

public class LeapYear
{
    public static void main (String args[])
    {
        //第一种方式
        int year = 1989;
        if((year % 4 == 0&&year % 100 != 0)||(year % 400 == 0))
        {
            System.out.println(year + " "  + "is a leap year.");
        }
        else
        {
            System.out.println(year + " "  + "is not a leap year.");
        }
        //第二种方式
        year = 2000;
        boolean leap;
        if (year % 4 != 0)
        {
            leap = false;
        }
        else if (year % 100 != 0)
        {
            leap = true;
        }
        else if (year % 400 !=0)
        {
            leap = false;
        }else
        {
            leap = true;
        }
        if (leap == true)
        {
            System.out.println(year+ " "  + "is a leap year.");
        }
        else
        {
            System.out.println(year+ " "  + "is not a leap year");
        }
    }
}