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Rekenmachine

Auteur: Duka.dk - 05 februari 2005 - 18:55 - Gekeurd door: Maarten - Hits: 5239 - Aantal punten: 2.70 (5 stemmen)




Gewoon deze class invoegen waar je hem wilt.
php code - Bekijk de code zonder highlighting - Klap code in 
  1. <applet code="AdderApplet.class" codebase = "" width="32" height="32">
  2. </applet>

Code:
AdderApplet.class
php code - Bekijk de code zonder highlighting - Klap code in 
  1. // Decompiled by DJ v3.7.7.81 Copyright 2004 Atanas Neshkov  Date: 5-2-2005 18:53:01
  2. // Home Page : http://members.fortunecity.com/neshkov/dj.html  - Check often for new version!
  3. // Decompiler options: packimports(3) 
  4. // Source File Name:   AdderApplet.java
  5.  
  6. import java.applet.Applet;
  7. import java.awt.*;
  8. import java.awt.event.ActionEvent;
  9. import java.awt.event.ActionListener;
  10.  
  11. public class AdderApplet extends Applet
  12.     implements ActionListener
  13. {
  14.  
  15.     public void init()
  16.     {
  17.         setLayout(new BorderLayout());
  18.         Panel textPanel = new Panel();
  19.         textPanel.setBackground(Color.blue);
  20.         textPanel.setLayout(new FlowLayout());
  21.         inputOutputField = new TextField("0", 20);
  22.         inputOutputField.setBackground(Color.white);
  23.         textPanel.add(inputOutputField);
  24.         add(textPanel, "North");
  25.         Panel platformPanel = new Panel();
  26.         platformPanel.setLayout(new GridLayout(4, 5));
  27.         Panel button1Panel = new Panel();
  28.         button1Panel.setBackground(Color.gray);
  29.         Button sevenButton = new Button(" 7 ");
  30.         sevenButton.addActionListener(this);
  31.         button1Panel.add(sevenButton);
  32.         Button eightButton = new Button(" 8 ");
  33.         eightButton.addActionListener(this);
  34.         button1Panel.add(eightButton);
  35.         Button nineButton = new Button(" 9 ");
  36.         nineButton.addActionListener(this);
  37.         button1Panel.add(nineButton);
  38.         Button divideButton = new Button(" / ");
  39.         divideButton.addActionListener(this);
  40.         button1Panel.add(divideButton);
  41.         platformPanel.add(button1Panel);
  42.         Panel button2Panel = new Panel();
  43.         button2Panel.setBackground(Color.gray);
  44.         Button fourButton = new Button(" 4 ");
  45.         fourButton.addActionListener(this);
  46.         button2Panel.add(fourButton);
  47.         Button fiveButton = new Button(" 5 ");
  48.         fiveButton.addActionListener(this);
  49.         button2Panel.add(fiveButton);
  50.         Button sixButton = new Button(" 6 ");
  51.         sixButton.addActionListener(this);
  52.         button2Panel.add(sixButton);
  53.         Button multiplyButton = new Button(" * ");
  54.         multiplyButton.addActionListener(this);
  55.         button2Panel.add(multiplyButton);
  56.         platformPanel.add(button2Panel);
  57.         Panel button3Panel = new Panel();
  58.         button3Panel.setBackground(Color.gray);
  59.         Button oneButton = new Button(" 1 ");
  60.         oneButton.addActionListener(this);
  61.         button3Panel.add(oneButton);
  62.         Button twoButton = new Button(" 2 ");
  63.         twoButton.addActionListener(this);
  64.         button3Panel.add(twoButton);
  65.         Button threeButton = new Button(" 3 ");
  66.         threeButton.addActionListener(this);
  67.         button3Panel.add(threeButton);
  68.         Button minusButton = new Button(" - ");
  69.         minusButton.addActionListener(this);
  70.         button3Panel.add(minusButton);
  71.         platformPanel.add(button3Panel);
  72.         Panel button4Panel = new Panel();
  73.         button4Panel.setBackground(Color.gray);
  74.         Button zeroButton = new Button(" 0 ");
  75.         zeroButton.addActionListener(this);
  76.         button4Panel.add(zeroButton);
  77.         Button dotButton = new Button(" . ");
  78.         dotButton.addActionListener(this);
  79.         button4Panel.add(dotButton);
  80.         Button addButton = new Button(" + ");
  81.         addButton.addActionListener(this);
  82.         button4Panel.add(addButton);
  83.         Button equalsButton = new Button(" = ");
  84.         equalsButton.addActionListener(this);
  85.         button4Panel.add(equalsButton);
  86.         platformPanel.add(button4Panel);
  87.         add(platformPanel, "Center");
  88.         Panel clearPanel = new Panel();
  89.         clearPanel.setBackground(Color.blue);
  90.         Button clearButton = new Button(" CLEAR ");
  91.         clearButton.addActionListener(this);
  92.         clearPanel.add(clearButton);
  93.         add(clearPanel, "South");
  94.     }
  95.  
  96.     public void actionPerformed(ActionEvent e)
  97.     {
  98.         if(e.getActionCommand().equals(" 7 "))
  99.         {
  100.             numString = numString + "7";
  101.             inputOutputField.setText(numString);
  102.             flag = "y";
  103.         } else
  104.         if(e.getActionCommand().equals(" 8 "))
  105.         {
  106.             numString = numString + "8";
  107.             inputOutputField.setText(numString);
  108.             flag = "y";
  109.         } else
  110.         if(e.getActionCommand().equals(" 9 "))
  111.         {
  112.             numString = numString + "9";
  113.             inputOutputField.setText(numString);
  114.             flag = "y";
  115.         } else
  116.         if(e.getActionCommand().equals(" 4 "))
  117.         {
  118.             numString = numString + "4";
  119.             inputOutputField.setText(numString);
  120.             flag = "y";
  121.         } else
  122.         if(e.getActionCommand().equals(" 5 "))
  123.         {
  124.             numString = numString + "5";
  125.             inputOutputField.setText(numString);
  126.             flag = "y";
  127.         } else
  128.         if(e.getActionCommand().equals(" 6 "))
  129.         {
  130.             numString = numString + "6";
  131.             inputOutputField.setText(numString);
  132.             flag = "y";
  133.         } else
  134.         if(e.getActionCommand().equals(" 1 "))
  135.         {
  136.             numString = numString + "1";
  137.             inputOutputField.setText(numString);
  138.             flag = "y";
  139.         } else
  140.         if(e.getActionCommand().equals(" 2 "))
  141.         {
  142.             numString = numString + "2";
  143.             inputOutputField.setText(numString);
  144.             flag = "y";
  145.         } else
  146.         if(e.getActionCommand().equals(" 3 "))
  147.         {
  148.             numString = numString + "3";
  149.             inputOutputField.setText(numString);
  150.             flag = "y";
  151.         } else
  152.         if(e.getActionCommand().equals(" - "))
  153.         {
  154.             equalBuffer = "";
  155.             calcIt();
  156.             buttonBuffer = "-";
  157.         } else
  158.         if(e.getActionCommand().equals(" / "))
  159.         {
  160.             equalBuffer = "";
  161.             calcIt();
  162.             buttonBuffer = "/";
  163.         } else
  164.         if(e.getActionCommand().equals(" * "))
  165.         {
  166.             equalBuffer = "";
  167.             calcIt();
  168.             buttonBuffer = "*";
  169.         } else
  170.         if(e.getActionCommand().equals(" 0 "))
  171.         {
  172.             numString = numString + "0";
  173.             inputOutputField.setText(numString);
  174.         } else
  175.         if(e.getActionCommand().equals(" . "))
  176.         {
  177.             numString = numString + ".";
  178.             inputOutputField.setText(numString);
  179.         } else
  180.         if(e.getActionCommand().equals(" + "))
  181.         {
  182.             equalBuffer = "";
  183.             calcIt();
  184.             buttonBuffer = "+";
  185.         } else
  186.         if(e.getActionCommand().equals(" = "))
  187.         {
  188.             calcIt();
  189.             buttonBuffer = buttonBuffer;
  190.             equalBuffer = "=";
  191.         } else
  192.         if(e.getActionCommand().equals(" CLEAR "))
  193.         {
  194.             numString = "";
  195.             inputOutputField.setText("0");
  196.             buttonBuffer = "";
  197.             numBuffer = 0.0D;
  198.             equalBuffer = "";
  199.             equalString = "";
  200.         } else
  201.         {
  202.             inputOutputField.setText("Error in adder code.");
  203.         }
  204.         repaint();
  205.     }
  206.  
  207.     private void doTheMath()
  208.     {
  209.         if(buttonBuffer == "+")
  210.         {
  211.             if(numString == "")
  212.                 numString = "0";
  213.             numBuffer = numBuffer + stringToDouble(numString);
  214.             inputOutputField.setText(Double.toString(numBuffer));
  215.         } else
  216.         if(buttonBuffer == "-")
  217.         {
  218.             if(numString == "")
  219.                 numString = "0";
  220.             numBuffer = numBuffer - stringToDouble(numString);
  221.             inputOutputField.setText(Double.toString(numBuffer));
  222.         } else
  223.         if(buttonBuffer == "*")
  224.         {
  225.             if(numString == "")
  226.                 numString = "1";
  227.             numBuffer = numBuffer * stringToDouble(numString);
  228.             inputOutputField.setText(Double.toString(numBuffer));
  229.         } else
  230.         if(buttonBuffer == "/")
  231.         {
  232.             if(numString == "")
  233.                 numString = "1";
  234.             numBuffer = numBuffer / stringToDouble(numString);
  235.             inputOutputField.setText(Double.toString(numBuffer));
  236.         }
  237.     }
  238.  
  239.     private void doEqualMath()
  240.     {
  241.         if(buttonBuffer == "+")
  242.         {
  243.             numBuffer = numBuffer + stringToDouble(equalString);
  244.             inputOutputField.setText(Double.toString(numBuffer));
  245.         } else
  246.         if(buttonBuffer == "-")
  247.         {
  248.             numBuffer = numBuffer - stringToDouble(equalString);
  249.             inputOutputField.setText(Double.toString(numBuffer));
  250.         } else
  251.         if(buttonBuffer == "*")
  252.         {
  253.             numBuffer = numBuffer * stringToDouble(equalString);
  254.             inputOutputField.setText(Double.toString(numBuffer));
  255.         } else
  256.         if(buttonBuffer == "/")
  257.         {
  258.             numBuffer = numBuffer / stringToDouble(equalString);
  259.             inputOutputField.setText(Double.toString(numBuffer));
  260.         }
  261.     }
  262.  
  263.     private void calcIt()
  264.     {
  265.         numString = inputOutputField.getText();
  266.         if(flag == "y")
  267.         {
  268.             equalString = inputOutputField.getText();
  269.             doTheMath();
  270.             numBuffer = stringToDouble(inputOutputField.getText());
  271.             numString = "";
  272.         }
  273.         if(flag == "n")
  274.         {
  275.             if(equalBuffer == "=")
  276.                 doEqualMath();
  277.             numBuffer = stringToDouble(inputOutputField.getText());
  278.             if(equalBuffer != "=")
  279.                 buttonBuffer = "";
  280.             numString = "";
  281.         }
  282.         flag = "n";
  283.     }
  284.  
  285.     private static double stringToDouble(String stringObject)
  286.     {
  287.         return Double.valueOf(stringObject.trim()).doubleValue();
  288.     }
  289.  
  290.     public AdderApplet()
  291.     {
  292.         buttonBuffer = "";
  293.         equalBuffer = "";
  294.         numBuffer = 0.0D;
  295.         numString = "";
  296.         equalString = "";
  297.         flag = "n";
  298.     }
  299.  
  300.     private TextField inputOutputField;
  301.     private String buttonBuffer;
  302.     private String equalBuffer;
  303.     private double numBuffer;
  304.     private String numString;
  305.     private String equalString;
  306.     private String flag;
  307. }
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