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");
         }
     }
 }