a.java

来自「JAVA 基础例题包含了JAVA常见的问题和常见的习题」· Java 代码 · 共 28 行

package testjavabasic;
public class A 
{ 
    int year,month,day;
    A(int y,int m,int d)        //类的构造方法,用于初始化成员变量
    {
        year = y;
        month = m;
        day = d;
    }  
    boolean isleapyear()
    {
        return (year%400==0)| (year%100!=0) & (year%4==0);
    }
    void print() 
    {
        System.out.println("date is "+year+'-'+month+'-'+day);
    }
}
class Aa
{
    public static void main(String args[]) 
    {
        A a = new A(2002,6,30) ;  //创建对象的同时，初始化
        a.print();
        System.out.println(a.year+" is a leap year,"+a.isleapyear());
    }
}