方法的参数类型

package cn.iostream;

import cn.arrayList.Person;

public class MethodParam {
    public static void main(String[] args) {
        method1(100);
        int[] arr = {10,20,30};
        method2(arr);
        String str="Hello World";
        method3(str);
        Person person = new Person("赵丽颖",20);
        method4(person);
    }
    public static void method1(int param)
    {
        System.out.println("int param");
    }
    public static void method2(int[] param)
    {
        for(int i=0;i<param.length;i++)
        {
            System.out.println(param[i]);
        }
    }
    public static void method3(String str)
    {
//        System.out.println("int param");
        System.out.println(str);
    }
    public static void method4(Person person)
    {
        System.out.println("姓名："+person.getName()+"年龄："+person.getAge());
    }
}