example_2.java

采用JAVA界面,实现对学生信息的简单录入,用JTABLE来模拟数据库的输出格式.

		}
		else {
		 	JOptionPane.showMessageDialog(fam, "该学生分数不足，未录取");
	      }
	  }
	  
	 //保存文件函数 
	 void Save(){
    	filedialog_save.setVisible(true);
    	int state = filedialog_save.getMode();
    	if(state==FileDialog.SAVE){
    		File f = new File(filedialog_save.getDirectory(),filedialog_save.getFile());
    		 try   {   
              ObjectOutputStream  bw   =   new   ObjectOutputStream(new   FileOutputStream(f));   
              for(int i=0;i<v.size();i++){  
              
              bw.writeObject(v.get(i));
                }
                                                     
             bw.close();   
    
             }catch(FileNotFoundException e1){   
                    e1.printStackTrace();   
           } catch(IOException   e1){   
               e1.printStackTrace();   
             } 
    	}   	
    }
   
   //打开文件函数
    void Load(){
    	v.removeAllElements();
    	filedialog_load.setVisible(true);
    	int state = filedialog_load.getMode();      
    		if(state==FileDialog.LOAD){
    		File f = new File(filedialog_load.getDirectory(),filedialog_load.getFile());
    		 try   {   
              ObjectInputStream in= new ObjectInputStream(new FileInputStream(f)); 
               
              
               	v.addElement(in.readObject());
                                  
            	 
                      
                
                in.close();
             }catch(FileNotFoundException e1){} 
           catch(IOException   e1){} 
          catch (ClassNotFoundException e1) {}
    	}  
               this.ShowValue();	
    }
	
	
	//为显示信息的表格填值
	void ShowValue(){
		for(int i=0;i<v.size();i++)
        	  {
        	  	a[i][0]=((Student)v.get(i)).GetName();
        	  	a[i][1]=((Student)v.get(i)).GetID();
        	  	a[i][2]=String.valueOf(((Student)v.get(i)).GethomeAddress());
        	  	a[i][3]=String.valueOf(((Student)v.get(i)).GettelNum());
        	  }
    	    jlb.setText("共录取了学生 "+ v.size()+"名");
	        dlg.setSize(350,300);
    		dlg.setVisible(true);
	}
	
	//实现监听的函数
  public void actionPerformed(ActionEvent e){
  	
  	//监听统计按扭
    if(e.getSource()==item_statist||e.getSource()==btn_statist)ShowValue();
       
    //监听保存按扭	
    else if(e.getSource()==Fitem_exit){//添加保存信息
      	System.exit(0);
      }
         
    //监听录取按扭
    else if(e.getSource()==item_receave||e.getSource()==btn_receave){   	
    	if(name.getText().equals("")||id.getText().equals(""))
    	{
    	JOptionPane.showMessageDialog(fam, "学号或姓名不能为空！");
    	return;
    	}
       JudgeReceave(two);  	
    }  
    
    //监听帮助中的关于按扭
    else if(e.getSource()==item_about){
    	JOptionPane.showMessageDialog(fam, "作者：杨伟明"+"\n"+"时间：2007年5月6日"+"\n"+
      "版本号: version 3.8"+"\n"+"God is in his heaven."+"\n"+"All's Right with the world.");
    }
     
    //监听录取线选项  
    else if(e.getSource()==item_setScore){fam_luqu.setVisible(true);} 
    
    //监听设置录取线        
    else if(e.getSource()==btn_luqu){
    	
    //	lb_luqu.setText("当前录取分数线为:"+one.GetScoreLine());
    try{
    	if(Double.parseDouble(tf_luqu.getText())<0||Double.parseDouble(tf_luqu.getText())>750)
    	{
    		JOptionPane.showMessageDialog(fam, "录取分数已经超出范围");
    		lb_luqu.setText("当前录取分数线为:"+one.GetScoreLine());
    		fam_luqu.setVisible(false);
    		return;
    	}
    	if(tf_luqu.getText().equals("")){fam_luqu.setVisible(false);return;}
    	else 
    		one.SetScoreLine(Double.parseDouble(tf_luqu.getText()));    	   		
    		fam_luqu.setVisible(false);
    	
    }catch(Exception e1){    	
    	fam_luqu.setVisible(false);
    	lb_luqu.setText("当前录取分数线为:"+one.GetScoreLine());
    }
    	
    }
    
    //监听查找选项
    else if(e.getSource()==item_find){
    	fam_cha.setVisible(true);
    }
    
    //监听查找按扭
    else if(e.getSource()==btn_cha){
    	area.setText("");
    	for(int i=0;i<v.size();i++){
    		if(tf_chaname.getText().equals(((Student)v.get(i)).GetName())||tf_chaid.getText().equals(((Student)v.get(i)).GetID())){
    		area.append("学号："+((Student)v.get(i)).GetID()+"\t"+"姓名："+((Student)v.get(i)).GetName()+"\t"+
    		"综合成绩："+((Student)v.get(i)).GethomeAddress()+"\t"+"体育成绩："+((Student)v.get(i)).GettelNum()+"\n");
    		}
    	}
    	dlg_1.setVisible(true);
    }
                
    //监听保存选项
    else if(e.getSource()==item_save)Save();
        
    //监听打开选项
    else if(e.getSource()==item_open)Load();

    
   
    
    }
    
  //处理TEXTFIELD中的一些相关信息
   public void textValueChanged(TextEvent e){
   	
    if(e.getSource()==name){
    	name.setSelectionEnd(name.getText().length());
   	   two.SetName(name.getText());
    }
    
    //监听录取分数
    else if(e.getSource()==tf_luqu){

    	lb_luqu.setText("当前录取分数线为:"+tf_luqu.getText());
    }
    
    else if(e.getSource()==id){
    	id.setSelectionEnd(id.getText().length());
       two.SetId(id.getText());
    }
    
    else if(e.getSource()==homeAddress){
     try{
    	j_1=Double.parseDouble(homeAddress.getText());
    	}catch(Exception liwai){
	      j_1=0.0;
    	}
   	   if(j_1>750){
    	JOptionPane.showMessageDialog(fam, "总分不能超过750分");
    	homeAddress.setText("");
    	j_1=0.0;
    	return;
    	}
    	two.SethomeAddress(j_1);
    }
    
    else if(e.getSource()==telNum){
     try{
    	j_2=Double.parseDouble(telNum.getText());
    	}catch(Exception liwai){
	      j_2=0.0;
    	}
       if(Double.parseDouble(telNum.getText())>100){
    	JOptionPane.showMessageDialog(fam, "体育分数不能超过100分");
    	telNum.setText("");
    	j_2=0.0;
    	return;
    	}
   	   two.SettelNum(j_2);
    }

} 
    
    public static void main(String args[]){
    	Example_2 Win= new Example_2();
    }
	
}

//学校类
class School{
	static double scoreLine=400;
	void SetScoreLine(double sl){
		scoreLine=sl;
	}
	static double GetScoreLine(){
            return scoreLine;		
	}
}

//学生类
class Student implements Serializable {
	private String name="";
	private String id="";
	private double homeAddress,telNum;
	
	Student(String Sna,String Sid,double ShomeAddress,double StelNum){
		name=Sna;
		id=Sid;
		homeAddress=ShomeAddress;
		telNum=StelNum;
	}
	
    public void SetName(String Sna){
    	name=Sna;
    }
    
    public void SetId(String Sid){
    	id=Sid;
    }
    
    public void SethomeAddress(double ShomeAddress){
    	homeAddress=ShomeAddress;
    }
    
    public void SettelNum(double StelNum){
    	telNum=StelNum;
    }
    
 	public String GetName(){
		return name;
	}
	
	public String GetID(){
		return id;
	}
	
	public double GethomeAddress(){
		return homeAddress;
	}
	
	public double GettelNum(){
		return telNum;
	}
	
}