Java随机点名小案例

package com.meng.test;

import java.util.Random;
import java.util.Scanner;

public class FunctionDemo05 {
	public static void main(String[] args) {
		System.out.println("--------随机点名器--------"); 
		String[] students = new String[5];  
		addName(students);  
		printName(students);   
		System.out.println("被点到名的同学是 :" + randomName(students)); 
	}
	
	//添加学生姓名
	public static void addName(String[] s1) { 
		 Scanner sc = new Scanner(System.in); 
		 for (int i = 0; i < s1.length; i++) { 
		
			 System.out.println("请输入第"+(i+1)+"个同学姓名："); 
			 s1[i] = sc.next(); 
		} 
	} 
		
	//打印所有学生的姓名	
	public static void printName(String[] s2) { 
		for (int i = 0; i < s2.length; i++) { 
			String name = s2[i]; 
			System.out.println("第"+(i+1)+"个学生名为：" + name); 
		} 
	}
	
	//随机点名
	public static String randomName(String[] s3) { 
		int index = new Random().nextInt(s3.length); 
		String name = s3[index]; 
		 //返回随机点到的名称
		return name; 
	}
	
}