• 结队--复利计算再升级

    一、作业

    复利计算再升级------------------------------------------------------------

    客户在大家的引导下，有了更多的想法：

    1. 这个数据我经常会填.....帮我预先填上呗？......
    2. 把界面做得简单漂亮好操作一点呗？
    3. 能不能帮我转成个APP，我装到手机上就更方便了？
    4. 我觉得这个很有用，很多人可能都需要这些功能，做到我的微信公众号上吧？
    5. 能不能不要让我填表单，让我发条消息，或者对着手机说句话就可以了？

    每组选一两个方向加以改进，让我们的投资计算与记录工具，达到可以发布给用户使用的版本，并发布博客对此次更新进行说明与总结。

    二、任务分配

    郑明泽：对我写的窗口代码和以前的代码进行连接修整。

    古林萍：首先写出窗口代码和设置界面，然后因为强迫症对界面做了一些细节的调整。

    三、估算

            估计用时：6h

            实际用时：10h

    四、窗口代码

      1 import java.awt.Color;
  2 import java.awt.Font;
  3 import java.awt.event.MouseAdapter;
  4 import java.awt.event.MouseEvent;
  5 import java.text.DecimalFormat;
  6 
  7 import javax.swing.DefaultComboBoxModel;
  8 import javax.swing.JButton;
  9 import javax.swing.JComboBox;
 10 import javax.swing.JFrame;
 11 import javax.swing.JLabel;
 12 import javax.swing.JTextField;
 13 import javax.swing.SwingUtilities;
 14 import javax.swing.UIManager;
 15 
 16 import org.dyno.visual.swing.layouts.Constraints;
 17 import org.dyno.visual.swing.layouts.GroupLayout;
 18 import org.dyno.visual.swing.layouts.Leading;
 19 
 20 
 21 //VS4E -- DO NOT REMOVE THIS LINE!
 22 public class CompundingMain extends JFrame {
 23 
 24     private static final long serialVersionUID = 1L;
 25     private JLabel jLabel0;
 26     private JLabel jLabel1;
 27     private JLabel jLabel2;
 28     private JLabel jLabel3;
 29     private static JTextField jTextField0;
 30     private static JTextField jTextField1;
 31     private JTextField jTextField2;
 32     private JTextField jTextField3;
 33     private JComboBox jComboBox0;
 34     //boolean simple_interext=false;
 35     //boolean compunding=false;
 36     private JLabel jLabel4;
 37     private JLabel jLabel5;
 38     private JLabel jLabel6;
 39     private JLabel jLabel7;
 40     private JButton jButton0;
 41     public CompundingMain() {
 42         initComponents();
 43     }
 44 
 45     private void initComponents() {
 46         setLayout(new GroupLayout());
 47         add(getJLabel0(), new Constraints(new Leading(35, 10, 10), new Leading(60, 10, 10)));
 48         add(getJLabel1(), new Constraints(new Leading(35, 12, 12), new Leading(100, 21, 10, 10)));
 49         add(getJLabel2(), new Constraints(new Leading(35, 12, 12), new Leading(140, 10, 10)));
 50         add(getJLabel3(), new Constraints(new Leading(35, 12, 12), new Leading(180, 10, 10)));
 51         add(getJTextField0(), new Constraints(new Leading(120, 110, 10, 10), new Leading(60, 12, 12)));
 52         add(getJTextField1(), new Constraints(new Leading(120, 110, 12, 12), new Leading(100, 12, 12)));
 53         add(getJTextField2(), new Constraints(new Leading(120, 110, 12, 12), new Leading(140, 12, 12)));
 54         add(getJTextField3(), new Constraints(new Leading(120, 110, 12, 12), new Leading(180, 12, 12)));
 55         add(getJLabel4(), new Constraints(new Leading(35, 12, 12), new Leading(230, 10, 10)));
 56         add(getJLabel6(), new Constraints(new Leading(135, 10, 10), new Leading(230, 10, 10)));
 57         add(getJLabel7(), new Constraints(new Leading(275, 10, 10), new Leading(259, 10, 10)));
 58         add(getJButton0(), new Constraints(new Leading(270, 12, 12), new Leading(120, 12, 12)));
 59         add(getJButton1(), new Constraints(new Leading(270, 12, 12), new Leading(170, 12, 12)));
 60         add(getJLabel5(), new Constraints(new Leading(35, 12, 12), new Leading(12, 12, 12)));
 61         add(getJComboBox0(), new Constraints(new Leading(260, 12, 12), new Leading(12, 12, 12)));
 62         setSize(365, 275);
 63     }
 64 
 65     private JButton getJButton1() {
 66         if (jButton1 == null) {
 67             jButton1 = new JButton();
 68             jButton1.setText("计算");
 69             jButton1.addMouseListener(new MouseAdapter() {
 70     
 71                 public void mouseClicked(MouseEvent event) {
 72                     jButton1MouseMouseClicked(event);
 73                 }
 74             });
 75         }
 76         return jButton1;
 77     }
 78 
 79     private JButton getJButton0() {
 80         if (jButton0 == null) {
 81             jButton0 = new JButton();
 82             jButton0.setText("清除");
 83         }
 84         return jButton0;
 85     }
 86 
 87     private JLabel getJLabel7() {
 88         if (jLabel7 == null) {
 89             jLabel7 = new JLabel();
 90             jLabel7.setText("@237-glp_moliny");
 91             jLabel7.setFont(new Font("", 1, 10));
 92             jLabel7.setForeground(Color.lightGray);
 93         }
 94         return jLabel7;
 95     }
 96 
 97     private JLabel getJLabel6() {
 98         if (jLabel6 == null) {
 99             jLabel6 = new JLabel();
100             jLabel6.setText("请输入数据");
101             jLabel6.setFont(new Font("楷体", 1, 20));
102             jLabel6.setForeground(Color.red);
103         }
104         return jLabel6;
105     }
106 
107     private JLabel getJLabel5() {
108         if (jLabel5 == null) {
109             jLabel5 = new JLabel();
110             jLabel5.setFont(new Font("楷体", Font.BOLD, 20));
111             jLabel5.setText("复利计算器1.0");
112         }
113         return jLabel5;
114     }
115 
116     private JLabel getJLabel4() {
117         if (jLabel4 == null) {
118             jLabel4 = new JLabel();
119             jLabel4.setText("计算结果：");
120             jLabel4.setFont(new Font("楷体",1,20));
121         }
122         return jLabel4;
123     }
124 
125     private JComboBox getJComboBox0() {
126         if (jComboBox0 == null) {
127             jComboBox0 = new JComboBox();
128             jComboBox0.setModel(new DefaultComboBoxModel(new Object[] { "求最终金额", "求存款年份", "求存款利息", "求存款本金", "求等额投资", "求贷款还钱","看投资记录" }));
129             jComboBox0.setDoubleBuffered(false);
130             jComboBox0.setBorder(null);
131             jComboBox0.addMouseListener(new MouseAdapter() {
132     
133                 public void mouseClicked(MouseEvent event) {
134                     jComboBox0MouseMouseClicked(event);
135                 }
136             });
137         }
138         return jComboBox0;
139     }
140 
141     private JTextField getJTextField3() {
142         if (jTextField3 == null) {
143             jTextField3 = new JTextField();
144         }
145         return jTextField3;
146     }
147 
148     private JTextField getJTextField2() {
149         if (jTextField2 == null) {
150             jTextField2 = new JTextField();
151         }
152         return jTextField2;
153     }
154 
155     private JTextField getJTextField1() {
156         if (jTextField1 == null) {
157             jTextField1 = new JTextField();
158         }
159         return jTextField1;
160     }
161 
162     private JTextField getJTextField0() {
163         if (jTextField0 == null) {
164             jTextField0 = new JTextField();
165         }
166         return jTextField0;
167     }
168 
169     private JLabel getJLabel3() {
170         if (jLabel3 == null) {
171             jLabel3 = new JLabel();
172             jLabel3.setText("复利次数：");
173         }
174         return jLabel3;
175     }
176 
177     private JLabel getJLabel2() {
178         if (jLabel2 == null) {
179             jLabel2 = new JLabel();
180             jLabel2.setText("存款年份：");
181         }
182         return jLabel2;
183     }
184 
185     private JLabel getJLabel1() {
186         if (jLabel1 == null) {
187             jLabel1 = new JLabel();
188             jLabel1.setText("存款利息：");
189         }
190         return jLabel1;
191     }
192 
193     private JLabel getJLabel0() {
194         if (jLabel0 == null) {
195             jLabel0 = new JLabel();
196             jLabel0.setText("存款本金：");
197         }
198         return jLabel0;
199     }
200 
201     private static void installLnF() {
202         try {
203             String lnfClassname = PREFERRED_LOOK_AND_FEEL;
204             if (lnfClassname == null)
205                 lnfClassname = UIManager.getCrossPlatformLookAndFeelClassName();
206             UIManager.setLookAndFeel(lnfClassname);
207         } catch (Exception e) {
208             System.err.println("Cannot install " + PREFERRED_LOOK_AND_FEEL
209                     + " on this platform:" + e.getMessage());
210         }
211     }
212 
213     /**
214      * Main entry of the class.
215      * Note: This class is only created so that you can easily preview the result at runtime.
216      * It is not expected to be managed by the designer.
217      * You can modify it as you like.
218      */
219     public static void main(String[] args) {
220         installLnF();
221         SwingUtilities.invokeLater(new Runnable() {
222             public void run() {
223                 CompundingMain frame = new CompundingMain();
224                 frame.setDefaultCloseOperation(CompundingMain.EXIT_ON_CLOSE);
225                 frame.setTitle("Moliny");
226                 frame.getContentPane().setPreferredSize(frame.getSize());
227                 frame.pack();
228                 frame.setLocationRelativeTo(null);
229                 frame.setVisible(true);
230             }
231         });
232     }
233     
234     Calculate cal;
235     private JButton jButton1;
236     private static final String PREFERRED_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";
237     private void jButton1MouseMouseClicked(MouseEvent event) {
238         
239             DecimalFormat df = new DecimalFormat( "0.0000");
240             double P = Double.valueOf(jTextField0.getText());
241             double i = Double.valueOf(jTextField1.getText());
242             int n = Integer.valueOf(jTextField2.getText());
243             int k = Integer.valueOf(jTextField3.getText());
244             double F=1.0000;
245             F=P*(Math.pow(i/k+1,k*n));
246             //F = cal.compunding(P, i, n, k);
247             jLabel6.setText(String.valueOf(df.format(F)));
248     }
249 
250     private void jComboBox0MouseMouseClicked(MouseEvent event) {
251         Object str;
252         str=jComboBox0.getSelectedItem();
253         if (str == "求最终金额") {
254             jLabel1.setText("存款利息");
255             jLabel2.setText("存款年份");
256         }else if (str == "求存款年份") {
257             jLabel1.setText("最终金额");
258             jLabel2.setText("存款利息");
259         }
260         }
261 }

    五、结果

    六、总结

    从开始的c语言，到java，再到java文件存储，再到界面设置，这他妈的就是一个无底洞呀，根本想不到后面还会有什么。。。。。
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  • 原文地址：https://www.cnblogs.com/moliny/p/5393223.html
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