1 package com.zhadan.Frame;
2
3 import java.awt.event.MouseAdapter;
4
5 //VS4E -- DO NOT REMOVE THIS LINE!
6 public class MainFrame extends JFrame {
7
8 private static final long serialVersionUID = 1L;
9 private JLabel jLabel0;
10 private JTextField jTextField0;
11 private JLabel jLabel1;
12 private JTextField jTextField1;
13 private JTextField jTextField2;
14 private JTextField jTextField3;
15 private JLabel jLabel3;
16 private JLabel jLabel2;
17 private JButton jButton0;
18 public MainFrame() {
19 initComponents();
20 }
21
22 private void initComponents() {
23 setLayout(new GroupLayout());
24 add(getJLabel0(), new Constraints(new Leading(22, 32, 10, 10), new Leading(36, 24, 12, 12)));
25 add(getJTextField0(), new Constraints(new Leading(66, 219, 10, 10), new Leading(37, 23, 12, 12)));
26 add(getJLabel1(), new Constraints(new Leading(22, 28, 12, 12), new Leading(78, 23, 12, 12)));
27 add(getJTextField1(), new Constraints(new Leading(66, 218, 12, 12), new Leading(78, 12, 12)));
28 add(getJTextField2(), new Constraints(new Leading(66, 218, 12, 12), new Leading(121, 12, 12)));
29 add(getJLabel3(), new Constraints(new Leading(22, 12, 12), new Leading(161, 22, 12, 12)));
30 add(getJLabel2(), new Constraints(new Leading(22, 12, 12), new Leading(121, 22, 12, 12)));
31 add(getJComboBox0(), new Constraints(new Leading(109, 10, 10), new Leading(202, 12, 12)));
32 add(getJLabel4(), new Constraints(new Leading(89, 10, 10), new Leading(179, -8, 10, 10)));
33 add(getJButton0(), new Constraints(new Leading(17, 10, 10), new Leading(202, 12, 12)));
34 add(getJTextField3(), new Constraints(new Leading(66, 218, 12, 12), new Leading(157, 23, 10, 10)));
35 add(getJLabel5(), new Constraints(new Leading(56, 10, 10), new Leading(265, 10, 10)));
36 add(getJLabel6(), new Constraints(new Leading(137, 12, 12), new Leading(12, 12, 12)));
37 setSize(321, 314);
38 }
39
40 private JLabel getJLabel6() {
41 if (jLabel6 == null) {
42 jLabel6 = new JLabel();
43 jLabel6.setText("复利计算");
44 }
45 return jLabel6;
46 }
47
48 private JLabel getJLabel5() {
49 if (jLabel5 == null) {
50 jLabel5 = new JLabel();
51 jLabel5.setText("备注：要求什么哪里就不要你填");
52 }
53 return jLabel5;
54 }
55
56 private JLabel getJLabel4() {
57 if (jLabel4 == null) {
58 jLabel4 = new JLabel();
59 jLabel4.setText("要求什么就在哪里就不用写");
60 }
61 return jLabel4;
62 }
63
64 private JComboBox getJComboBox0() {
65 if (jComboBox0 == null) {
66 jComboBox0 = new JComboBox();
67 jComboBox0.setModel(new DefaultComboBoxModel(new Object[] { "复利计算", "求本金", "求利息", "求年限" }));
68 jComboBox0.setDoubleBuffered(false);
69 jComboBox0.setBorder(null);
70 }
71 return jComboBox0;
72 }
73
74 private JButton getJButton0() {
75 if (jButton0 == null) {
76 jButton0 = new JButton();
77 jButton0.setText("计算");
78 jButton0.addMouseListener(new MouseAdapter() {
79
80 public void mouseClicked(MouseEvent event) {
81 jButton0MouseMouseClicked(event);
82 }
83 });
84 }
85 return jButton0;
86 }
87
88 private JLabel getJLabel2() {
89 if (jLabel2 == null) {
90 jLabel2 = new JLabel();
91 jLabel2.setText("年限");
92 }
93 return jLabel2;
94 }
95
96 private JLabel getJLabel3() {
97 if (jLabel3 == null) {
98 jLabel3 = new JLabel();
99 jLabel3.setText("总额");
100 }
101 return jLabel3;
102 }
103
104 private JTextField getJTextField3() {
105 if (jTextField3 == null) {
106 jTextField3 = new JTextField();
107 }
108 return jTextField3;
109 }
110
111 private JTextField getJTextField2() {
112 if (jTextField2 == null) {
113 jTextField2 = new JTextField();
114 }
115 return jTextField2;
116 }
117
118 private JTextField getJTextField1() {
119 if (jTextField1 == null) {
120 jTextField1 = new JTextField();
121 }
122 return jTextField1;
123 }
124
125 private JLabel getJLabel1() {
126 if (jLabel1 == null) {
127 jLabel1 = new JLabel();
128 jLabel1.setText("利息");
129 }
130 return jLabel1;
131 }
132
133 private JTextField getJTextField0() {
134 if (jTextField0 == null) {
135 jTextField0 = new JTextField();
136 }
137 return jTextField0;
138 }
139
140 private JLabel getJLabel0() {
141 if (jLabel0 == null) {
142 jLabel0 = new JLabel();
143 jLabel0.setText("本金");
144 }
145 return jLabel0;
146 }
147
148 private static void installLnF() {
149 try {
150 String lnfClassname = PREFERRED_LOOK_AND_FEEL;
151 if (lnfClassname == null)
152 lnfClassname = UIManager.getCrossPlatformLookAndFeelClassName();
153 UIManager.setLookAndFeel(lnfClassname);
154 } catch (Exception e) {
155 System.err.println("Cannot install " + PREFERRED_LOOK_AND_FEEL + " on this platform:" + e.getMessage());
156 }
157 }
158
159 /**
160 * Main entry of the class.
161 * Note: This class is only created so that you can easily preview the result at runtime.
162 * It is not expected to be managed by the designer.
163 * You can modify it as you like.
164 */
165 public static void main(String[] args) {
166 installLnF();
167 SwingUtilities.invokeLater(new Runnable() {
168 public void run() {
169 MainFrame frame = new MainFrame();
170 frame.setDefaultCloseOperation(MainFrame.EXIT_ON_CLOSE);
171 frame.setTitle("MainFrame");
172 frame.getContentPane().setPreferredSize(frame.getSize());
173 frame.pack();
174 frame.setLocationRelativeTo(null);
175 frame.setVisible(true);
176 }
177 });
178 }
179 Fuli f =new Fuli();
180 Benjin b =new Benjin();
181 Lilv l = new Lilv();
182 Nianxian n = new Nianxian();
183 private JComboBox jComboBox0;
184 private JLabel jLabel4;
185 private JLabel jLabel5;
186 private JLabel jLabel6;
187 private static final String PREFERRED_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";
188 private void jButton0MouseMouseClicked(MouseEvent event) {
189 String p = this.jTextField0.getText();
190 String i = this.jTextField1.getText();
191 String year = this.jTextField2.getText();
192 String sum = this.jTextField3.getText();
193 if(jComboBox0.getSelectedItem()=="复利计算"){
194 f.calculate(p, i, year);
195 this.jTextField3.setText(f.sum);
196 }
197 if(jComboBox0.getSelectedItem()=="求本金"){
198 b.calculate(sum, i, year);
199 this.jTextField0.setText(b.p);
200 }
201 if(jComboBox0.getSelectedItem()=="求利息"){
202 l.calculate(p, sum, year);
203 this.jTextField1.setText(l.i);
204 }
205 if(jComboBox0.getSelectedItem()=="求年限"){
206 n.calculate(p, i, sum);
207 this.jTextField2.setText(n.year);
208 }
209 }
210
211 }
212
213 package com.zhadan.calculate;
214
215 import java.text.DecimalFormat;
216
217 public class Fuli {
218 double sum2;
219 public String sum;
220 public void calculate(String p2,String i2,String year2){
221 double p = Double.parseDouble(p2);
222 double i = Double.parseDouble(i2);
223 int year = Integer.parseInt(year2);
224 for(int j=1;j<=year;j++){
225 p=p+p*i;
226
227 }
228 DecimalFormat df=new DecimalFormat("0.0");
229 sum2=p;
230 sum=String.valueOf(df.format(sum2));
231 }
232 }
233
234 package com.zhadan.calculate;
235
236 import java.text.DecimalFormat;
237
238 public class Benjin {
239 double p2;
240 public String p;
241 public void calculate(String sum2,String i2,String year2){
242 double sum = Double.parseDouble(sum2);
243 double i = Double.parseDouble(i2);
244 int year = Integer.parseInt(year2);
245 i=1+i;
246 for(int j=1;j<=year;j++){
247 sum=sum/i;
248 }
249 DecimalFormat df=new DecimalFormat("0.0");
250 Math.round(sum);
251 p2=sum;
252 p=String.valueOf(df.format(p2));
253 }
254 }
255
256 package com.zhadan.calculate;
257
258 import java.text.DecimalFormat;
259
260 public class Lilv {
261 double i2;
262 public String i;
263 public void calculate(String p2,String sum2,String year2){
264 double p = Double.parseDouble(p2);
265 double sum = Double.parseDouble(sum2);
266 double year = Integer.parseInt(year2);
267 DecimalFormat df=new DecimalFormat("0.0");
268 i2=Math.pow(sum/p, 1/year)-1;
269 i=String.valueOf(df.format(i2));
270 }
271 }
272
273 package com.zhadan.calculate;
274
275 public class Nianxian {
276 int year2=0;
277 public String year;
278 public void calculate(String p2,String i2,String sum2){
279 double p = Double.parseDouble(p2);
280 double i = Double.parseDouble(i2);
281 double sum = Double.parseDouble(sum2);
282 while(p<sum){
283 for(int j=1;j<100;j++);{
284 p=p*(1+i);
285 year2++;
286 }
287 }
288 year=String.valueOf(year2);
289 System.out.println(year);
290 }
291
292 }
