用Java语言编写一个具有录入、插入、修改、删除、排序、索引与查询功能的程序

以学生姓名、学号为例
package server;

import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.ArrayList;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class Students extends JFrame{
/**
* 信息组建
*/
ArrayList<String> alname = new ArrayList<String>();
ArrayList<String> alno = new ArrayList<String>();
/**
* 面板组件
*/
static int num = 0;