Simple implementation of Java version of Student management system _java

This example for you to share the Java implementation of the student management system of the specific code for your reference, the specific content as follows

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 ("Student management System"); 
  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; 
  * * * Find * * * * private Label Searchlabel; 
  Private JTextField SearchText; 
  Private JButton sbut; 
  Private JTextField Resulttext; 
  Private string[] name; 
   
  Private string[] grade; 
  /* * Sort */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); 
    Container container = This.getlayeredpane (); 
    Object panel Combop = new JPanel (); 
    P1 = new JPanel (); 
    P2 = new JPanel (); 
     
    P3 = new JPanel (); 
    B1 =new JButton ("confirm add"); 
    B2 =new JButton ("recall add"); 
    Namelabel =new Label ("name"); 
     
    Gradelabel =new Label ("achievement");             Showlabel=new Label (the current record is zero!) 
     
    "); 
    Textname =new JTextField (15); 
    Textgrade =new JTextField (15); 
     
    Showgradearea=new TextArea (); 
    * * * * */searchlabel=new Label ("Please enter Name:"); 
    Searchtext=new JTextField (15); 
    Sbut=new JButton ("Confirm Lookup"); 
    Resulttext=new JTextField (15); 
    /* * Sort */showtextarea=new TextArea (); 
    Sortbut=new JButton ("ranking of grades"); 
  Clearbut=new JButton ("Empty data"); public void Initwin () {this.setbounds (300, 300, 500, 400);
    This.addwindowlistener (New Windowadapter () {public void windowclosing (WindowEvent e) {SUPER.WINDOWCL 
        Osing (e); 
      System.exit (0); 
      }}); 
      Layoutwin (); 
  This.setvisible (TRUE); 
    private void Layoutwin () {Tab.add (P1, "score input"); 
    Tab.add (P2, "score query"); 
    Tab.add (P3, "grade ranking"); 
    Combop.add (New JLabel ("Student Information Management system"); 
    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); 
    * * Find layout * */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); 
    * * * Sort layout * */P3.add (Showtextarea); 
    P3.add (sortbut); 
    P3.add (clearbut); 
    Sortbut.addactionlistener (listener); 
  Clearbut.addactionlistener (listener); * * * Java internal class implementation ActionListener Interface * * */class Listener implements actionlistener{@Override Public v OID actionperformed (ActionEvent e) {if (E.getsource () ==b1) {if (Textname.gettext (). Equal S ("")) | | (Textgrade.gettext (). Equals ("")) {Showlabel.settext (name, result cannot be empty)! 
        "); 
          } else{Name[countnum]=textname.gettext (); 
          Grade[countnum]=textgrade.gettext (); 
          countnum++;String area= "Add success, currently has" +countnum+ "record"; 
          Showlabel.settext (area); 
          Sortmess (FALSE); 
          Textname.settext (""); 
        Textgrade.settext (""); 
          } if (E.getsource () ==b2) {if (countnum>0) {countnum--; 
          String area= "withdrawn successfully, currently has" +countnum+ "record"; 
          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.parse)Int (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 ("")) {Showgradeare 
        A.settext (""); 
        } for (int i=0;i<countnum;i++) {String content= "name:" +name[i]+ "\ T" + "score" +grade[i]; 
        if (sign) showtextarea.append (content+ "\ n"); 
      else Showgradearea.append (content+ "\ n"); The public void searchmess (String n) {//TODO auto-generated a stub for (int i= 
          0;i<countnum;i++) {if (Name[i].equals (n)) {String content= "name:" +name[i]+ "," + "result" +grade[i]; 
          Resulttext.settext (content); 
        Return }} resulttext.settext ("The student was not found! ");}}}  

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