Java详解

​ 方法的定义

​ 方法调用

package www.struct;

public class refordemo {
    public static void main(String[] args) {
        int max =max (10,10);
        System.out.println(max);
    }
    //比大小
    public static int max(int n1,int n2)
    {
        int result=0;
        if (n1==n2){
            System.out.println("n1==n2");
            return 0;//终止方法
        }
        if (n1>n2)
        {
            result=n1;
        }
        else{
            result=n2;
        }
        return result;
    }

}

图

package www.method;

public class demo02 {
    public static void main(String[] args) {
        demo02 demo02 = new demo02();
        demo02.test(1,2);
    }
    public void test(int... i){
        System.out.println(i[0]);
        System.out.println(i[1]);
    }
}

package www.method;

public class demo03 {
   public static void main(String[] args) {
        //阶乘
       System.out.println(f(3));
    }
    public static int f(int n){
        if (n==1){
            return 1;
        }else {
            return n*f(n-1);
        }
    }
}