简单实现Java版学生管理系统

本文实例为大家分享了Java实现学生管理系统的具体代码，供大家参考，具体内容如下

package BookDemo_1;

import javax.swing.*;

import java.awt.*;
import java.awt.event.*;

public class Test {
public static void main(String[] args) {
StudentSys stuSys=new StudentSys("学生管理系统");
stuSys.initWin();
}
}
class StudentSys extends JFrame{

private JPanel p1,p2,p3,combop;
private JTabbedPane tab;
private Container container;
private JButton b1,b2;
private Listener listener;
private Label nameLabel;
private Label gradeLabel;
private Label showLabel;
private JTextField textName;
private JTextField textGrade;
private TextArea showGradeArea;
/*
* 查找
* */
private Label searchLabel;
private JTextField searchText;
private JButton sBut;
private JTextField resultText;
private String[] name;
private String[] grade;

/*
* 排序
* */
private TextArea showTextArea;
private JButton sortBut;
private int countNum=0;
private JButton clearBut;
public StudentSys(String str){
super(str);

this.name=new String[100];
this.grade=new String[100];
listener = new Listener();
tab = new JTabbedPane(JTabbedPane.TOP);
//容器
container = this.getLayeredPane();
//对象化面板
combop = new JPanel();
p1 = new JPanel();
p2 = new JPanel();
p3 = new JPanel();

b1 =new JButton("确认添加");
b2 =new JButton("撤回添加");
nameLabel =new Label("姓名");
gradeLabel =new Label("成绩");

showLabel=new Label("当前记录为零！    ");

textName =new JTextField(15);
textGrade =new JTextField(15);
showGradeArea=new TextArea();

/*
* 查找
* */
searchLabel=new Label("请输入姓名：");
searchText=new JTextField(15);
sBut=new JButton("确认查找");
resultText=new JTextField(15);
/*
* 排序
* */
showTextArea=new TextArea();
sortBut=new JButton("成绩排序");
clearBut=new JButton("清空数据");
}
public void initWin(){
this.setBounds(300, 300, 500, 400);
this.addWindowListener(new WindowAdapter(){
 public void windowClosing(WindowEvent e) {
 super.windowClosing(e);
 System.exit(0);
 }});
 layoutWin();
 this.setVisible(true);
}
private void layoutWin(){

tab.add(p1,"成绩输入");
tab.add(p2,"成绩查询");
tab.add(p3,"成绩排序");
combop.add(new JLabel("学生信息管理系统"));
container.setLayout(new BorderLayout());
container.add(combop,BorderLayout.NORTH);
container.add(tab,BorderLayout.CENTER);

Container con1=new Container();
con1.setLayout(new FlowLayout());
con1.add(nameLabel);
con1.add(textName);

con1.add(gradeLabel);
con1.add(textGrade);
p1.add(con1,BorderLayout.NORTH);
p1.add(con1);
p1.add(showGradeArea);

Container con2=new Container();
con2.setLayout(new FlowLayout());
con2.add(b1);
con2.add(b2);
con2.add(showLabel);
p1.add(con2);
b1.addActionListener(listener);
b2.addActionListener(listener);
/*
* 查找布局
* */

Container con3=new Container();
con3.setLayout(new FlowLayout());
con3.add(searchLabel);
con3.add(searchText);
con3.add(sBut);
p2.add(con3,BorderLayout.NORTH);
sBut.addActionListener(listener);
p2.add(resultText);
/*
* 排序布局
* */
p3.add(showTextArea);
p3.add(sortBut);
p3.add(clearBut);
sortBut.addActionListener(listener);
clearBut.addActionListener(listener);
}
/*
* java内部类实现ActionListener接口
* */
class Listener implements ActionListener{
@Override
 public void actionPerformed(ActionEvent e) {

if(e.getSource()==b1){

if((textName.getText().equals(""))||(textGrade.getText().equals(""))){
  showLabel.setText("添加失败(姓名,成绩不能有空)！");
 }
 else{
  name[countNum]=textName.getText();
  grade[countNum]=textGrade.getText();
  countNum++;
  String area="添加成功,当前有"+countNum+"条记录";
  showLabel.setText(area);
  sortMess(false);
  textName.setText("");
  textGrade.setText("");
 }

}
 if(e.getSource()==b2){
 if(countNum>0){
  countNum--;
  String area="撤回成功,当前有"+countNum+"条记录";
  showLabel.setText(area);
  sortMess(false);
 }
 }
 if(e.getSource()==sBut){
 if(!searchText.getText().equals("")){
  searchMess(searchText.getText());
 }
 }
 if(e.getSource()==sortBut){
 sortMess(true);
 }
 if(e.getSource()==clearBut){
 if(!showTextArea.getText().equals("")){
  showTextArea.setText("");
  }
 }
}

public void sortMess(boolean sign) {
 // TODO Auto-generated method stub
 if(sign){
 for(int i=0;i<countNum;i++){
  for(int j=i+1;j<countNum;j++){
  if(Integer.parseInt(grade[i])<Integer.parseInt(grade[j])){
   String s1,s2;
   s1=name[i];
   s2=grade[i];

name[i]=name[j];
   grade[i]=grade[j];

name[j]=s1;
   grade[j]=s2;
  }
  }
 }
 }else{

if(!showGradeArea.getText().equals("")){
  showGradeArea.setText("");
 }
 }
 for(int i=0;i<countNum;i++){
 String content="姓名:"+name[i]+"\t"+"成绩"+grade[i];
 if(sign)showTextArea.append(content+"\n");
 else showGradeArea.append(content+"\n");
 }
}

public void searchMess(String n) {
 // TODO Auto-generated method stub

for(int i=0;i<countNum;i++){
 if(name[i].equals(n)){
  String content="姓名:"+name[i]+","+"成绩"+grade[i];
  resultText.setText(content);
  return;
 }
 }
 resultText.setText("未找到该学生!");
}
}
}

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