0414复利计算6.0--结对

结对同伴：

姓名：柯晓君

学号：201406114210

博客园地址：http://www.cnblogs.com/950525kxj/

一、项目简介

开发工具：eclipse

开发语言：java

主要功能：复利单利的计算、贷款的计算以及投资运算三大功能。

二、新增功能

做出一部分功能的界面

三、估计

估计用时：5小时

实际用时：6小时

估计代码行数：500行左右

实际代码行数：470行

四、任务分配

由于我们两人对做界面都不熟悉，所以是一起做的，没具体分工。

五、新增代码

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;

import org.dyno.visual.swing.layouts.Constraints;
import org.dyno.visual.swing.layouts.GroupLayout;
import org.dyno.visual.swing.layouts.Leading;

//VS4E -- DO NOT REMOVE THIS LINE!
public class Fulijisuan extends JFrame {

    private static final long serialVersionUID = 1L;
    private JTextField jTextField0;
    private JTextField jTextField1;
    private JTextField jTextField2;
    private JTextField jTextField3;
    private JLabel jLabel0;
    private JLabel jLabel1;
    private JLabel jLabel2;
    private JLabel jLabel3;

    private JButton jButton0;
    private JButton jButton1;

    public Fulijisuan() {
        initComponents();
    }

    private void initComponents() {
        setLayout(new GroupLayout());
        add(getJTextField0(), new Constraints(new Leading(121, 132, 10, 10), new Leading(26, 38, 10, 10)));
        add(getJTextField1(), new Constraints(new Leading(121, 132, 10, 10), new Leading(85, 41, 10, 10)));
        add(getJTextField2(), new Constraints(new Leading(121, 132, 10, 10), new Leading(148, 39, 10, 10)));
        add(getJLabel0(), new Constraints(new Leading(59, 44, 12, 12), new Leading(30, 31, 12, 12)));
        add(getJLabel1(), new Constraints(new Leading(55, 43, 10, 10), new Leading(85, 40, 12, 12)));
        add(getJLabel2(), new Constraints(new Leading(62, 12, 12), new Leading(146, 39, 10, 10)));
        add(getJLabel3(), new Constraints(new Leading(59, 10, 10), new Leading(216, 37, 12, 12)));
        add(getJComboBox1(), new Constraints(new Leading(323, 120, 10, 10), new Leading(128, 31, 10, 10)));
        add(getJTextField3(), new Constraints(new Leading(121, 132, 10, 10), new Leading(216, 41, 10, 10)));
        add(getJRadioButton0(), new Constraints(new Leading(326, 10, 10), new Leading(197, 12, 12)));
        add(getJButton0(), new Constraints(new Leading(124, 10, 10), new Leading(290, 10, 10)));
        add(getJButton2(), new Constraints(new Leading(233, 10, 10), new Leading(292, 10, 10)));
        add(getJComboBox0(), new Constraints(new Leading(323, 120, 10, 10), new Leading(67, 32, 10, 10)));
        setSize(460, 374);
    }

    private JButton getJButton2() {
        if (jButton2 == null) {
            jButton2 = new JButton();
            jButton2.setText("清除");
            jButton2.addMouseListener(new MouseAdapter() {

                public void mouseClicked(MouseEvent event) {
                    jButton1MouseMouseClicked(event);
                }
            });
        }
        return jButton2;
    }

    private JButton getJButton0() {
        if (jButton0 == null) {
            jButton0 = new JButton();
            jButton0.setText("计算");
            jButton0.addMouseListener(new MouseAdapter() {

                public void mouseClicked(MouseEvent event) {
                    jButton0MouseMouseClicked(event);
                }
            });
        }
        return jButton0;
    }

    private JRadioButton getJRadioButton0() {
        if (jRadioButton0 == null) {
            jRadioButton0 = new JRadioButton();
            jRadioButton0.setSelected(false);
            jRadioButton0.setText("定投");
            jRadioButton0.addMouseListener(new MouseAdapter() {

                public void mouseClicked(MouseEvent event) {
                    jRadioButton0MouseMouseClicked(event);
                }
            });
        }
        return jRadioButton0;
    }

    private JComboBox getJComboBox1() {
        if (jComboBox1 == null) {
            jComboBox1 = new JComboBox();
            jComboBox1.setModel(new DefaultComboBoxModel(new Object[] { "复利计算",
                    "单利计算" }));
            jComboBox1.setDoubleBuffered(false);
            jComboBox1.setBorder(null);
        }
        return jComboBox1;
    }

    private JComboBox getJComboBox0() {
        if (jComboBox0 == null) {
            jComboBox0 = new JComboBox();
            jComboBox0.setModel(new DefaultComboBoxModel(new Object[] { "求本息和",
                    "求本金", "求利率", "求年数 ", "求等额本息还款" }));
            jComboBox0.setDoubleBuffered(false);
            jComboBox0.setBorder(null);
            jComboBox0.addMouseListener(new MouseAdapter() {
            });
        }
        return jComboBox0;
    }

    private JLabel getJLabel3() {
        if (jLabel3 == null) {
            jLabel3 = new JLabel();
            jLabel3.setText("本息");
        }
        return jLabel3;
    }

    private JLabel getJLabel2() {
        if (jLabel2 == null) {
            jLabel2 = new JLabel();
            jLabel2.setText("年限");
        }
        return jLabel2;
    }

    private JLabel getJLabel1() {
        if (jLabel1 == null) {
            jLabel1 = new JLabel();
            jLabel1.setText("年利率");
        }
        return jLabel1;
    }

    private JLabel getJLabel0() {
        if (jLabel0 == null) {
            jLabel0 = new JLabel();
            jLabel0.setText("本金");
        }
        return jLabel0;
    }

    private JTextField getJTextField3() {
        if (jTextField3 == null) {
            jTextField3 = new JTextField();
        }
        jTextField3.addKeyListener(new KeyAdapter() {
            public void keyTyped(KeyEvent e) {

                int keyChar = e.getKeyChar();
                if (keyChar >= KeyEvent.VK_0 && keyChar <= KeyEvent.VK_9
                        || keyChar == '.') {

                } else {
                    e.consume();

                }
            }
        });
        return jTextField3;
    }

    private JTextField getJTextField2() {
        if (jTextField2 == null) {
            jTextField2 = new JTextField();
        }
        jTextField2.addKeyListener(new KeyAdapter() {
            public void keyTyped(KeyEvent e) {

                int keyChar = e.getKeyChar();
                if (keyChar >= KeyEvent.VK_0 && keyChar <= KeyEvent.VK_9
                        || keyChar == '.') {

                } else {
                    e.consume();

                }
            }
        });
        return jTextField2;
    }

    private JTextField getJTextField1() {
        if (jTextField1 == null) {
            jTextField1 = new JTextField();
        }
        jTextField1.addKeyListener(new KeyAdapter() {
            public void keyTyped(KeyEvent e) {

                int keyChar = e.getKeyChar();
                if (keyChar >= KeyEvent.VK_0 && keyChar <= KeyEvent.VK_9
                        || keyChar == '.') {

                } else {
                    e.consume();

                }
            }
        });
        return jTextField1;
    }

    private JTextField getJTextField0() {
        if (jTextField0 == null) {
            jTextField0 = new JTextField();
            jTextField0.addKeyListener(new KeyAdapter() {
                public void keyTyped(KeyEvent e) {

                    int keyChar = e.getKeyChar();
                    if (keyChar >= KeyEvent.VK_0 && keyChar <= KeyEvent.VK_9
                            || keyChar == '.') {

                    } else {
                        e.consume();

                    }
                }
            });
        }
        return jTextField0;
    }

    private static void jiemian() {
        try {
            String lnfClassname = PREFERRED_LOOK_AND_FEEL;
            if (lnfClassname == null)
                lnfClassname = UIManager.getCrossPlatformLookAndFeelClassName();
            UIManager.setLookAndFeel(lnfClassname);
        } catch (Exception e) {
            System.err.println("Cannot install " + PREFERRED_LOOK_AND_FEEL
                    + " on this platform:" + e.getMessage());
        }
    }

    boolean y = false;
    String key2;
    private JComboBox jComboBox0;

    private JRadioButton jRadioButton0;

    private JComboBox jComboBox1;

    private JButton jButton2;
    private static final String PREFERRED_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";
    public static void main(String[] args) {
        jiemian();
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                Fulijisuan frame = new Fulijisuan();
                frame.setDefaultCloseOperation(Fulijisuan.EXIT_ON_CLOSE);
                frame.setTitle("Fulijisuan");
                frame.getContentPane().setPreferredSize(frame.getSize());
                frame.pack();
                frame.setLocationRelativeTo(null);
                frame.setVisible(true);
            }
        });
    }

    public void jButton0MouseMouseClicked(MouseEvent event) {
        String key1;
        boolean canplay = false;
        String b, c, d;
        double i = 0, n = 0, p = 0, f = 0;
        key1 = (String) jComboBox0.getSelectedItem();
        key2 = (String) jComboBox1.getSelectedItem();
        if (key1 == "求本息和") {
            b = String.valueOf(jTextField1.getText());
            c = String.valueOf(jTextField2.getText());
            d = String.valueOf(jTextField0.getText());
            if (b.length() > 0 && c.length() > 0 && d.length() > 0) {
                i = Double.parseDouble(jTextField1.getText());
                n = Double.parseDouble(jTextField2.getText());
                p = Double.parseDouble(jTextField0.getText());
                canplay = deposit(i, n, p);
            }

        } else if (key1 == "求本金") {
            b = String.valueOf(jTextField1.getText());
            c = String.valueOf(jTextField2.getText());
            d = String.valueOf(jTextField3.getText());
            if (b.length() > 0 && c.length() > 0 && d.length() > 0) {
                i = Double.parseDouble(jTextField1.getText());
                n = Double.parseDouble(jTextField2.getText());
                f = Double.parseDouble(jTextField3.getText());
                canplay = principal(i, n, f);
            }
        } else if (key1 == "求利率") {
            b = String.valueOf(jTextField0.getText());
            c = String.valueOf(jTextField2.getText());
            d = String.valueOf(jTextField3.getText());
            if (b.length() > 0 && c.length() > 0 && d.length() > 0) {
                p = Double.parseDouble(jTextField0.getText());
                n = Double.parseDouble(jTextField2.getText());
                f = Double.parseDouble(jTextField3.getText());
                canplay = interest(p, n, f);
            }
        } else if (key1 == "求年数 ") {
            b = String.valueOf(jTextField0.getText());
            c = String.valueOf(jTextField1.getText());
            d = String.valueOf(jTextField3.getText());
            if (b.length() > 0 && c.length() > 0 && d.length() > 0) {
                p = Double.parseDouble(jTextField0.getText());
                i = Double.parseDouble(jTextField1.getText());
                f = Double.parseDouble(jTextField3.getText());
                canplay = year(p, i, f);
            }
        } else if (key1 == "求等额本息还款") {
            b = String.valueOf(jTextField0.getText());
            c = String.valueOf(jTextField1.getText());
            d = String.valueOf(jTextField2.getText());
            if (b.length() > 0 && c.length() > 0 && d.length() > 0) {
                p = Double.parseDouble(jTextField0.getText());
                i = Double.parseDouble(jTextField1.getText());
                n = Double.parseDouble(jTextField2.getText());
                canplay = loan(p, i, n);
            }
        }
        if (canplay == false) {
            JOptionPane.showMessageDialog(null, "请输入正确的数字！");
        }
    }

    public void jButton1MouseMouseClicked(MouseEvent event) {
        this.jTextField0.setText(null);
        this.jTextField1.setText(null);
        this.jTextField2.setText(null);
        this.jTextField3.setText(null);
    }

    public void jRadioButton0MouseMouseClicked(MouseEvent event) {
        if (y == false)
            y = true;
        else
            y = false;
    }

    public boolean deposit(double i, double n, double p) {
        double f = 0;
        if (i > 0 && n > 0 && p > 0) {
            if (n > 200)
                return false;
            if (key2 == "复利计算") {
                if (y == true) {
                    double p2 = p;
                    for (int a = 0; a < n; a++) {
                        p = p + f;
                        f = p * (1 + i);
                    }

                } else {
                    double s = 1;
                    for (int a = 0; a < n; a++) {

                        s = s * (1 + i);
                    }
                    f = p * s;

                }
            } else {
                if (y == true) {

                    f = p * n *( i * n+ 1);
                } else {

                    f = p * (i * n + 1);
                }
            }
            this.jTextField3.setText(String.format("%.2f", f));
            return true;
        } else
            return false;
    }

    public boolean principal(double i, double n, double f) {
        double p = 0, s = 1;
        if (i > 0 && n > 0 && f > 0) {
            if (n > 200)
                return false;
            if (key2 == "复利计算") {
                for (int a = 0; a < n; a++) {
                    s = (i + 1) * s;
                }
                p = f * (1 / s);

            } else {
                p = f * (1 / (1 + i * n));

            }
            this.jTextField0.setText(String.format("%.2f", p));

            return true;
        } else
            return false;
    }

    public boolean interest(double p, double n, double f) {
        double i = 0;
        if (f > 0 && n > 0 && p > 0) {
            if (n > 200)
                return false;
            if (key2 == "复利计算") {
                i = Math.pow(f / p, 1.0 / n) - 1;

            } else {
                i = (f - p) / (p * n);

            }
            this.jTextField1.setText(String.format("%.2f", i));

            return true;
        } else
            return false;
    }

    public boolean year(double p, double i, double f) {
        double n = 0;

        if (i > 0 && f > 0 && p > 0) {
            if (key2 == "复利计算") {
                n = Logarithm.log(f / p, 1 + i);

            } else {
                n = (f - p) / (p * i);

            }
            this.jTextField2.setText(String.format("%.2f", n));
            return true;
        } else
            return false;
    }

    public boolean loan(double p, double i, double n) {
        double f = 0;
        if (n > 200)
            return false;
        if (i > 0 && n > 0 && p > 0) {
            i = i / 12;
            n = n * 12;
            f = p * i * Math.pow(1 + i, n) / (Math.pow(1 + i, n) - 1);

            this.jTextField3.setText(String.format("%.2f", f));
            return true;
        } else
            return false;

    }
}

public class Logarithm {
    static public double log(double value, double base){
        return Math.log(value)/Math.log(base);
         
     }

}

六、运行结果

七、总结

由于和队友两人都对做界面不懂，需要向同学询问和网上查找相关资料，所以做出的界面不是很好并且只做了部分功能的界面。