java方法：参数

package com.tinstu.u7;
public class T2_can {
	public static void function1(int num){
		//方法体
		System.out.println("方法function1被执行了");
		System.out.println("数"+num);
		System.out.println("方法function1被执行完毕");
	}
	  //单个参数
	public static void function2(double num1){
		System.out.println("银行利率 一年3%");
		num1=num1*(1+0.03);
		System.out.println("到期余额:"+num1);
	}
	   //传入多个参数
	public static void function3(String lv,String name,double num1){
		System.out.println("银行利率 一年3%");
		num1=num1*(1+0.03);
		System.out.println(lv+"等级的"+name+"你好,到期余额:"+num1);
	}
	  //传入数组求平均值
	public static void function4(int[] array){
		int sum=0;
		for (int x:array) {
			sum=sum+x;
		}
		System.out.println("平均值:"+sum*1.0/array.length);
	}
	public static void main(String[] args) {
		System.out.println("main方法被执行");
		//调用方法
		function1(50);
		System.out.println("-------");
		function2(100);
		System.out.println("-------");
		function3("SVIP","张三",5000);
		System.out.println("-------");
		int[] a= {4,5,6,45,2,3};
		function4(a);
	}
}