简单实现Java版学生管理系统_java

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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