java实训题随机点名程序

Question

编写一个随机点名程序，使其能够在全班同学中随机点中某一名同学的名字，要求随机点名具备三个功能，包括储存全班同学姓名，查看全班同学姓名和随机点取其中一人姓名。

Answer 1

import java.util.*;

public class Random_call {

	public static String[] name_scan(int num){
		int n = 0;
		int number;
		number = num;    
		String[] name = new String[number]; 
		
		while(n < number){
			Scanner sc = new Scanner(System.in);
			String str = sc.next();
			name[n] = str;
			n++;
		}
		return name;
	}
	public static void print(String[] arrayname){
		int num;
		num = arrayname.length ;  
		String[] array = new String[num];
		array = arrayname;
		//System.out.print("\n");
		for(int i = 0;i < num; i++)
		{
			System.out.print(array[i]+" ");
		}
	}
	public static String call(String[] arrayname){
		Random random = new Random();
		int num = arrayname.length;
		int n = random.nextInt(num);
		String Name;
        Name = arrayname[n];
		return Name;
		
	}
	public static void main(String[] args) {
		int num;   // 输入总人数
	    String dianming;
		num = 4;
		String[] name = name_scan(num);
		print(name);
		dianming = call(name);
		System.out.print("\n"+"接下来点到的人是：\n");
		System.out.print(dianming);
	}
	
}