学生信息管理JAVA.doc

/* * AWT Sample application * * author * version 1.00 12/05/06 */ import javax.swing.*;import java.io.*;import java.awt.*;import java.awt.event.*;import java.util.*;public class Unit public static void main(String args) Vector stuList=new Vector(); String stu=,line=,input=,name=; boolean flag=true; int value,age;line=请选择你要的操作n1.增加学生 2.修改学生信息n3.删除学生 4.浏览所有学生信息n5.统计学生人数 6.退出系统; while(flag) JOptionPane.showMessageDialog(null,line,结果,JOptionPane.PLAIN_MESSAGE); input=JOptionPane.showInputDialog(请输入数字，选择你要的操作); value=Integer.parseInt(input); if(value=1) name=JOptionPane.showInputDialog(请输入要添加的学生的名字:); age=Integer.parseInt(JOptionPane.showInputDialog(请输入要添加学生的年龄:); student Student=new student(name,age); stuList.add(Student); /* Enumeration items=stuList.elements(); Object o= items.nextElement(); Student sample=(Student)o; JOptionPane.showMessageDialog(null,sample.getName(),结果,JOptionPane.PLAIN_MESSAGE); */ else if(value=2) name=JOptionPane.showInputDialog(请输入你要修改的学生的名字); input=JOptionPane.showInputDialog(请输入你要修改后的学生的年龄); age=Integer.parseInt(input); Enumeration items=stuList.elements(); while(items.hasMoreElements() /String namestr=S; student Stu=(student)items.nextElement(); if(Stu.getName().equals(name) Stu.Update(age); break; JOptionPane.showMessageDialog(null,修改成功!,结果,JOptionPane.PLAIN_MESSAGE); else if(value=3) name=JOptionPane.showInputDialog(请输入你要删除的学生的名字); Enumeration items=stuList.elements(); while(items.hasMoreElements() /String namestr=S; student Stu=(student)items.nextElement(); if(Stu.getName().equals(name) stuList.remove(Stu); break; JOptionPane.showMessageDialog(null,删除成功!,结果,JOptionPane.PLAIN_MESSAGE); else if(value=4) printVector(stuList); else if(value=5) JOptionPane.showMessageDialog(null,学生人数是+stuList.size(),结果,JOptionPane.PLAIN_MESSAGE); else if(value=6) flag=false; static public void printVector(Vector output) String line=; if(output.isEmpty() JOptionPane.showMessageDialog(null,The vector is empty,结果,JOptionPane.PLAIN_MESSAGE); else Enumeration items=output.elements(); while(items.hasMoreElements() /String namestr=S; student Stu=(student)items.nextElement(); line+=Stu.show(); JOptionPane.showMessageDialog(null,line,学生信息如下,JOptionPane.PLAIN_MESSAGE); public class student String name; int age; static int count=0; public student(String str,int m) name=str; age=m; count