输入学生序号和名字，使用ArrayList集合存储

输入学生个数和名字，使用ArrayList集合存储学生序号和名字，并显示所有的学生信息。

package hello;

import java.util.ArrayList;
import java.util.Scanner;

public class Student {
          
   

	public static void main(String[] args) {
          
   
		Scanner in = new Scanner(System.in);
		System.out.println("How many students?");
		int a = in.nextInt();
		if(a>0) {
          
   
		System.out.println("Please input the names of students:");
		String n; 
		in.nextLine();
		ArrayList<Name> arrayList = new ArrayList<Name>();
		for (int i = 0; i < a; i++) {
          
   
			 n = in.nextLine();
			Name s = new Name(i+1,n);
			arrayList.add(s);
		}
		System.out.println("All the students bellow:");
		for (Name i : arrayList) {
          
   

			System.out.println(i);

		}	
		}else {
          
   
			System.out.println("All the students bellow:");
		}
		in.close();
		
	}

}

class Name {
          
   
	public int xuhao;
	public String name;

	Name(int x, String n) {
          
   
		xuhao = x;
		name = n;
	}
	public String toString() {
          
   
		return xuhao+":"+name;
	}
}