修改程序

Question

public void actionPerformed(ActionEvent event)
        {
// deal with "Quit" button
if (event.getSource() == quit)
    {
    dispose();
    System.exit(0);
    }
// deal with "Load" button
else if (event.getSource() == load)
           {
            loadFile() ;
           }
        // deal with "newfile" button
        else if (event.getSource() == newfile)
            {
             //Chapter56n4.Flage=1;
    dispose();
             Chapter56n4.Flag=1;
            // Chapter56n4
             f=new Chapter56n4();
             //Chapter56n4.
             f.setVisible(true);
             //canvas.repaint();
            }        // deal with ok1
        else if (event.getSource() == ok1)
         {
            String c1 = newname.getText() ;
            String c2 = month.getText() ;
            String c3 = day.getText() ;
               String c4=".data";
               String c6=c1+"_Mon_"+c2+"_Day_" +c3+c4;
               System.out.println(c1);
               System.out.println(c6);
               String fileName = c6 ;
               Chapter56n4.f.newdatafile.setText("The newfile "+c6+"  was Created");              try
                {
                 DataOutputStream dout = new DataOutputStream(new
FileOutputStream(fileName)) ;
                  for (int j=0;j<10;j++)
                   {for(int i=0;i<10;i++)                    dout.writeInt(1);    //Seat[j][i]) ;
                   }                    dout.close() ;                    DataInputStream din1 = new DataInputStream(new
FileInputStream(fileName)) ;
                  int Seat[][]=new int[10][10];
                  for (int j=0;j<10;j++)
                   {for(int i=0;i<10;i++)
                    {
                     Seat[j][i] = din1.readInt() ;
                     System.err.print(Seat[j][i]) ;
                    }
                   }
                 din1.close() ;
                }
              catch(Exception e)
                {
                  System.err.println(e);
                }
             }//end ok1
        // deal with "OK" button
        else if (event.getSource() == OK)
         {
             System.out.println("OK is pressed");
             Chapter56n4.Fok=1;
           try
             {
            String c1 = seatrow.getText() ;
            String c3 = seatcol.getText() ;
            if ((c1!=null)&&(c3!=null))
              {
               int  c2 = 0 ;
                int  c4 = 0 ;
            
                c2 = Integer.parseInt(c1) ;
                c4 = Integer.parseInt(c3) ; 
                
                 Chapter56n4.Seat[c2][c4]=5;
                 canvas.repaint();
              }
            } 
             catch(Exception e)
               {
                System.err.println("ERROR:"+e);
               }
            try
             {
            String c5 = seatsrow.getText() ;
            String c6 = seatscolfrom1.getText() ;
            String c7 = seatscolto1.getText() ;
            if ((c5!=null)&&(c6!=null)&&(c7!=null))
               {
                int  c20 = 0 ;
                int  c40 = 0 ;
                int  c41=0;                 c20 = Integer.parseInt(c5) ;
                 c40 = Integer.parseInt(c6) ; 
                 c41 = Integer.parseInt(c7) ;
                 for(int m=c40;m<=c41;m++)
                 Chapter56n4.Seat[c20][m]=5;
                 canvas.repaint();
               }
              }
             catch(Exception e)
               {
                 System.err.println("ERROR:"+e);
               }            try
            {
            String c8 = seatsrowfrom.getText() ;
            String c9 = seatsrowto.getText() ;
            String c11 = seatscolfrom.getText() ;
            String c12 = seatscolto.getText() ;
            if ((c8!=null)&&(c9!=null)&&(c11!=null)&&(c12!=null))
               {
                int  c201 = 0 ;
                int  c202 = 0 ;
                int  c401 = 0;
                int  c402 = 0;
                 c201 = Integer.parseInt(c8) ;
                 c202 = Integer.parseInt(c9) ;
                 c401 = Integer.parseInt(c11) ; 
                 c402 = Integer.parseInt(c12) ;
                 for(int g=c201;g<=c202;g++)
                  { for(int h=c401;h<=c402;h++)                      Chapter56n4.Seat[g][h]=5;
                  };
                canvas.repaint();
                 }
           }
             catch(Exception e)
               {
                 System.err.println("ERROR:"+e);
               }           try
          {
        DataOutputStream dout = new DataOutputStream(new
                                        FileOutputStream(

Answer 1

Chapter56n4.file1)) ;             for (int j=0;j<10;j++)
               {for(int i=0;i<10;i++)                 dout.writeInt(Chapter56n4.Seat[j][i]) ;
                }             dout.close() ;
           }          catch(IOException e)
            {
              System.err.println(e);
             } ;
         }//end of OK // deal with "Quit" button
        else if (event.getSource() == Quit)
    {
    dispose();
    System.exit(0);
    }
        // deal with "Quit1" button
        else if (event.getSource() == quit1)
    {
    dispose();
    System.exit(0);
    }        // deal with "Cancel" button
        else if (event.getSource() == Cancel)
    {
             System.out.println("Cancel is pressed");
             seatrow.setText(null);
             seatcol.setText(null);
             seatsrow.setText(null);
             seatscolfrom1.setText(null);
             seatsrowfrom.setText(null);
             seatscolto1.setText(null);
             seatsrowto.setText(null);
             seatscolfrom.setText(null);
             seatscolto.setText(null);
            }
        // deal with "Cancel1" button
        else if (event.getSource() == Cancel1)
    {
             System.out.println("Cancel1 is pressed");
             newname.setText(null);
             month.setText(null);
             day.setText(null);
             newdatafile.setText(null);
            }
         } // end of method actionPerformed
 
    /**
     *
     * loadFile
     *
     */    private void loadFile()
        {
        FileDialog d = new FileDialog(this, "Load File", FileDialog.LOAD) ;
        d.setDirectory("./") ;
        d.setVisible(true) ;
        name = d.getFile() ;
        directory = d.getDirectory() ;
        canvas.repaint() ;
        } // end of method loadFile    /**
     *
     * windowClosing
     *
     */    public void windowClosing(WindowEvent event)
        {
        dispose();
        System.exit(0);
        } // end of method windowClosing    public void windowOpened(WindowEvent event) {}
    public void windowIconified(WindowEvent event) {}
    public void windowDeiconified(WindowEvent event) {}
    public void windowClosed(WindowEvent event) {}
    public void windowActivated(WindowEvent event) {}
    public void windowDeactivated(WindowEvent event) {}
    } // end of class Chapter56n4class Canvas4 extends Canvas
    {
    Chapter56n4 parent ;    /**
     *
     * constructor
     *
     */    public Canvas4(Chapter56n4 f)
        {
        parent = f ;
        } // end of constructor method    /**
     *
     * paint
     *
     */    public void paint(Graphics g)
        {
        Dimension d = getSize() ;
        int cx = d.width / 2,
      cy = d.height /2 ;
// draw a line round the edge of the canvas
        g.setColor(Color.black) ;
        g.drawRoundRect(2, 2, d.width - 5, d.height - 5, 20, 20) ;        if (parent.name != null)  //&&(Chapter56n4.FnewF==0))
    {
            String filename = parent.directory + parent.name ;
// set up some dimensions for the text labels
        Font f1 = new Font("Helvetica", Font.BOLD, 20) ;
            g.setFont(f1);
// draw surrounding line
g.setColor(Color.black) ;
g.drawRoundRect(2, 2, d.width - 5, d.height - 5, 20, 20) ;        g.drawString("The "+filename+" seats booking status",
                     30,50);        // get init data from file
               //String a="wt1.doc";
      if (Chapter56n4.Fok==0)
      {         Chapter56n4.file1=new File(filename);          try{           DataInputStream din1 = new DataInputStream(new
                                        FileInputStream(Chapter56n4.file1)) ;
//        int[][] Seat=new int[10][10];
            for (int j=0;j<10;j++)
             { for (int i=0;i<10;i++)
               {
                int  n1=din1.readInt();
                Chapter56n4.Seat[j][i] =n1;    
               }
             }           din1.close() ;
           }
         catch(IOException e)
           {
            System.err.println("ERROR:"+e);
           }
       }//end of get data from file,when Fok=0       
        // draw the init status of seats
       
        int x,y=70;
        for (int k=0;k<10;k++)
           {
            x=70;
            y=y+50;
            for (int l=0;l<10;l++)
            {
              x=x+30;
              if (Chapter56n4.Seat[k][l]==5||Chapter56n4.Seat[k][l]==8)  
               {
                g.setColor(Color.red);
                g.fillRect(x,y,26,26);
               }
               else
                {
                 g.setColor(Color.black);
                 g.drawRect(x,y,26,26);
                }
            }
          } //end of draw init status
         }//end of draw User's pecture        else    //no file,no pecture to draw
    {
    // write the message "No File" in the centre of the canvas
            Font f1 = new Font("TimesRoman", Font.PLAIN, 14) ;
            FontMetrics fm1 = g.getFontMetrics(f1) ;
    String s1 = "No File" ;
            int w1 = fm1.stringWidth(s1) ;
            g.setColor(Color.black) ;
            g.setFont(f1) ;
            int ctx = cx - (w1 / 2) ;
            int cty = cy ;
            g.drawString(s1, ctx, cty) ;
            Font f2 = new Font("TimesRoman", Font.PLAIN, 30) ;
            //FontMetrics fm1 = g.getFontMetrics(f1) ;
            String s2 = "Welcom to use the seat book system" ;
            //int w1 = fm1.stringWidth(s1) ;
            g.setColor(Color.red) ;
            g.setFont(f2) ;
            int x1 =50 ;
            int y1 =100 ;
            g.drawString(s2, x1, y1) ;
    }
        } // end of method paint
    } // end of class Canvas4

Answer 2

ppv (听潮) 写这么长的程序值得鼓励阿～～
觉得不错，你需要的东东，给你个思路吧
在 canvas 类的构造中增加监听，
 public Canvas4(Chapter56n4 f)
  {
    parent = f ;
    this.addMouseListener(new gMouseAdapter());
  } // end of constructor method增加类：class gMouseAdapter extends MouseAdapter{
  public void mouseClicked(MouseEvent e) {
    System.out.println(e.getPoint());     
    //这里 根据 点击的点的位置，判断落在哪个 方块里面，将里面的颜色改变，
    并且将数组的值作修改。  }    }

Answer 3

class gMouseAdapter extends MouseAdapter{
  public void mouseClicked(MouseEvent e) {
    System.out.println(e.getPoint());     
    //这里 根据 点击的点的位置，判断落在哪个 方块里面，将里面的颜色改变，
    并且将数组的值作修改。  }    }
这个应该怎么判断啊？  我刚学，不怎么清楚，老师就说了画布什么得。 关于鼠标得他说谁会可以加分得所以就来问问

Answer 4

比如页边距　２　行距３　方块４第一个方格：ｘ　２－６
　　　　　　ｙ　２－６如果point的x =3.3,y=4.3 就在方格一范围内当然这个需要花点儿时间计算了，自己做做吧，在遇到问题在说

Answer 5

那要看你方块的位置啰
p=e.getPoint();
p.x就是横坐标
p.y就是纵坐标 //从上到下也可用getX(),和getY();

Answer 6

加个鼠标监听事件！
然后在实现监听的方法时，有个MoustEvent e
void this_mouseMoved(MouseEvent e) {
      e.getX();//....
      e.getY();//....
  }
//根据鼠标的位置可以响应你的方法或实现！

Answer 7

同意zhjjava(狂人一个)的意见，别的我还没有想到