Calculator GUI Work(Version T1)

从大一开始就有人做计算器，那时候由于对gui不太熟悉，再加上当时认为算法自己理解地不是很透彻，所以没有自己做过。最近一直想努力做好gui，所以做了一个计算器的gui。

 

这篇文章来实例自己如何一步一步没话界面，有好建议的希望提出来。

 

首先，上version 1：

 

代码：

 

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/**
 * This class is to build the frame layout of the project. What's more, add 
 * actionListener to every button.
 * @author Tian Meng
 * @version 2011-4-5
 */
public class GuiFrame extends JFrame
{
    JTextArea displayMessage =new JTextArea("\n0",2,26);
    JButton[] numbers =new JButton[10];//数字键
    JButton[] identifyOfNumbers =new JButton[2];//小数点和正负号
    JButton[] operator =new JButton[8];// + ; - ; * ; /  ; =  ; sqrt  ;1/x ;  %
    JButton[] clearer =new JButton[2]; // reset 和 backspace
    
    /**
     * constructor of this class
     */
    public GuiFrame()
    {
        initButtons();
        makeFrame();
        setVisible(true);
        pack();
    }
    
    /**
     *Initailize the buttons in the frame
     */
    private void initButtons()
    {
        init_numbers();
        init_identifyOfNumbers();
        init_operator();
        init_clearer();
    }
    
    /**
     * Initalize the number buttons anb add actionlistener
     */
    private void init_numbers()
    {
        String[] nub ={"7","8","9","4","5","6","1","2","3","0"};
        for(int i=0;i<10;i++)
        {
            numbers[i]=new JButton(nub[i]);
            numbers[i].setForeground(Color.BLUE);
            numbers[i].addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent e)
                {
                    
                }
            });
        }
    }
    
    /**
     * Initalize the "+/-" and " . " buttons, then add actionlistener
     */
    private void init_identifyOfNumbers()
    {
        for(int i=0;i<2;i++)
        {
            if(i==0)
            {
                identifyOfNumbers[i]= new JButton("+/-");
            }
            else
            {
                identifyOfNumbers[i]= new JButton(".");
            }
            identifyOfNumbers[i].setForeground(Color.BLUE);
            identifyOfNumbers[i].addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent e)
                {
                    
                }
            });
        }
    }
    
    /**
     * Initalize the operators buttons anb add actionlistener
     */
    private void init_operator()
    {
        String[] op={"/","sqrt","*","%","-","1/x","+","="};
        for(int i=0;i<8;i++)
        {
            operator[i] =new JButton(op[i]);
            operator[i].setForeground(Color.RED);
            operator[i].addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent e)
                {
                    
                }
            });
        }
    }
    
    /**
     * Initalize the clear buttons anb add actionlistener
     */
    private void init_clearer()
    {
         for(int i=0;i<2;i++)
        {
            if(i==0)
            {
                clearer[i]= new JButton("BackSpace");
            }
            else
            {
                clearer[i]= new JButton("Clear");
            }
            clearer[i].setForeground(Color.RED);
            clearer[i].addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent e)
                {
                    
                }
            });
        }
    }
    
    /**
     * this method is to construct the frame layout
     */
    private void makeFrame()
    {
        Container con=getContentPane();
        con.setLayout(new BorderLayout());
        //displayMessage in the north part
        JPanel northPanel =new JPanel();
        con.add(northPanel,BorderLayout.NORTH);
        displayMessage.setEnabled(false);
        displayMessage.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
        northPanel.add(displayMessage);
        //clearer in the center part
        JPanel centerPanel =new JPanel();
        con.add(centerPanel,BorderLayout.CENTER);
        centerPanel.add(clearer[0]);
        centerPanel.add(clearer[1]);
        //numbers and operators in the south part
        JPanel southPanel =new JPanel(new BorderLayout());
        JPanel numPanel =new JPanel(new GridLayout(4,3,3,3));
        JPanel opePanel =new JPanel(new GridLayout(4,2,3,3));
        con.add(southPanel,BorderLayout.SOUTH);
        southPanel.add(numPanel,BorderLayout.CENTER);
        southPanel.add(opePanel,BorderLayout.EAST);
        for(int i=0;i<10;i++)
        {
            numPanel.add(numbers[i]);
        }
        numPanel.add(identifyOfNumbers[0]);
        numPanel.add(identifyOfNumbers[1]);
        numPanel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
        for(int i=0;i<8;i++)
        {
            opePanel.add(operator[i]);
        }
        opePanel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
    }
}

 

 

 效果图如下：

 

 

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version2 To be continued ...