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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