API tools faq
paste
Advertisement
Guest User

Untitled

a guest
Feb 20th, 2019
84
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 14.20 KB | None | 0 0
raw download clone embed print report
  1. import java.awt.Color;
  2. import java.awt.Font;
  3. import java.awt.GridLayout;
  4. import java.awt.Image;
  5. import java.awt.Toolkit;
  6. import java.awt.event.ActionEvent;
  7. import java.awt.event.ActionListener;
  8.  
  9. import javax.swing.JButton;
  10. import javax.swing.JPanel;
  11. import javax.swing.JTextField;
  12. import javax.swing.event.ChangeEvent;
  13. import javax.swing.event.ChangeListener;
  14.  
  15. class Cal extends javax.swing.JFrame implements ActionListener {
  16.  
  17. private DigitButton plusminus, b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, bpoint;
  18. private OpButton add, sub, mul, div, del, clear, inv, sqrt, equal;
  19. JTextField tf;
  20. static double a = 0, b = 0, result = 0;
  21. static int operator = 0;
  22. private int point;
  23. private Image icon;
  24.  
  25. Cal() {
  26.  
  27. super("Calculator");
  28. point = 0;
  29. icon = Toolkit.getDefaultToolkit().getImage("icon.png"); // Loading icon image into memory
  30.  
  31. /************* Initialising buttons ************/
  32. b1 = new DigitButton("1");
  33. b2 = new DigitButton("2");
  34. b3 = new DigitButton("3");
  35. b4 = new DigitButton("4");
  36. b5 = new DigitButton("5");
  37. b6 = new DigitButton("6");
  38. b7 = new DigitButton("7");
  39. b8 = new DigitButton("8");
  40. b9 = new DigitButton("9");
  41. b0 = new DigitButton("0");
  42. bpoint = new DigitButton(".");
  43. inv = new OpButton("1/x");
  44. sqrt = new OpButton("√");
  45. plusminus = new DigitButton("±");
  46. del = new OpButton("DEL");
  47.  
  48. add = new OpButton("+");
  49. sub = new OpButton("-");
  50. mul = new OpButton("×");
  51. div = new OpButton("÷");
  52. clear = new OpButton("C");
  53. equal = new OpButton("=");
  54.  
  55. // TextField in which result is to be displayed
  56. tf = new JTextField();
  57. tf.setEditable(false);
  58. tf.setFont(new Font("Segoi UI", Font.BOLD, 25)); // Setting font
  59.  
  60. // tf.setBackground(Color.DARK_GRAY.darker().darker());
  61. // tf.setForeground(Color.WHITE.brighter());
  62. tf.setBackground(Color.WHITE);
  63. tf.setForeground(Color.BLACK);
  64. tf.setText("0");
  65.  
  66. tf.setBorder(null);
  67.  
  68. /********** Setting the location of the buttons ***********/
  69.  
  70. JPanel panel = new JPanel();
  71. JPanel panel2 = new JPanel();
  72. JPanel panel3 = new JPanel();
  73. JPanel panel4 = new JPanel();
  74.  
  75. panel.add(b7);
  76. panel.add(b8);
  77. panel.add(b9);
  78.  
  79. panel.add(b4);
  80. panel.add(b5);
  81. panel.add(b6);
  82.  
  83. panel.add(b1);
  84. panel.add(b2);
  85. panel.add(b3);
  86.  
  87. panel2.add(plusminus);
  88. panel2.add(b0);
  89. panel2.add(bpoint);
  90.  
  91. panel3.add(div);
  92. panel3.add(mul);
  93. panel3.add(sub);
  94. panel3.add(add);
  95. panel3.add(equal);
  96.  
  97. panel4.add(clear);
  98. panel4.add(sqrt);
  99. panel4.add(inv);
  100. panel4.add(del);
  101.  
  102. GridLayout grid = new GridLayout(3, 3);
  103. GridLayout grid2 = new GridLayout(1, 2);
  104. GridLayout grid3 = new GridLayout(5, 1);
  105. GridLayout grid4 = new GridLayout(1, 4);
  106.  
  107. panel.setLayout(grid);
  108. panel.setBounds(0, 160, 240, 240);
  109.  
  110. panel2.setLayout(grid2);
  111. panel2.setBounds(0, 400, 240, 80);
  112.  
  113. panel3.setLayout(grid3);
  114. panel3.setBounds(240, 160, 80, 320);
  115.  
  116. panel4.setLayout(grid4);
  117. panel4.setBounds(0, 80, 320, 80);
  118.  
  119. tf.setBounds(0, 0, 320, 80);
  120.  
  121. tf.setHorizontalAlignment(JTextField.RIGHT); // Setting alignment
  122.  
  123. /******** Adding Panels to the Frame ***********/
  124. add(panel);
  125. add(panel2);
  126. add(panel3);
  127. add(panel4);
  128.  
  129. add(tf);
  130.  
  131. /* Adding ActionListeners to the buttons */
  132. b0.addActionListener(this);
  133. b1.addActionListener(this);
  134. b2.addActionListener(this);
  135. b3.addActionListener(this);
  136. b4.addActionListener(this);
  137. b5.addActionListener(this);
  138. b6.addActionListener(this);
  139. b7.addActionListener(this);
  140. b8.addActionListener(this);
  141. b9.addActionListener(this);
  142. bpoint.addActionListener(this);
  143. clear.addActionListener(this);
  144. equal.addActionListener(this);
  145. add.addActionListener(this);
  146. sub.addActionListener(this);
  147. mul.addActionListener(this);
  148. div.addActionListener(this);
  149. plusminus.addActionListener(this);
  150. sqrt.addActionListener(this);
  151. inv.addActionListener(this);
  152. del.addActionListener(this);
  153.  
  154. ////////////////////////////////////////////
  155.  
  156. setDefaultCloseOperation(EXIT_ON_CLOSE);
  157. setResizable(false);
  158. setIconImage(icon);
  159. setLocationRelativeTo(null);
  160. setSize(335, 515);
  161. setLayout(null);
  162. setVisible(true);
  163.  
  164. }
  165.  
  166. private boolean isZero(String Text) {
  167.  
  168. if (Text.equals("0"))
  169. return true;
  170. else
  171. return false;
  172. }
  173.  
  174. private void getInput(ActionEvent e) {
  175.  
  176. if (tf.getText().equals("∞")) {
  177.  
  178. } else if (tf.getText().equals("Invalid input")) {
  179.  
  180. } else if (e.getSource().equals(b0)) {
  181. if (isZero(tf.getText())) {
  182. tf.setText("0");
  183. } else {
  184. tf.setText(tf.getText().concat("0"));
  185. }
  186. } else if (e.getSource().equals(b1)) {
  187. if (isZero(tf.getText())) {
  188. tf.setText("1");
  189. } else {
  190. tf.setText(tf.getText().concat("1"));
  191. }
  192. } else if (e.getSource().equals(b2)) {
  193. if (isZero(tf.getText())) {
  194. tf.setText("2");
  195. } else {
  196. tf.setText(tf.getText().concat("2"));
  197. }
  198. } else if (e.getSource().equals(b3)) {
  199. if (isZero(tf.getText())) {
  200. tf.setText("3");
  201. } else {
  202. tf.setText(tf.getText().concat("3"));
  203. }
  204. } else if (e.getSource().equals(b4)) {
  205. if (isZero(tf.getText())) {
  206. tf.setText("4");
  207. } else {
  208. tf.setText(tf.getText().concat("4"));
  209. }
  210. } else if (e.getSource().equals(b5)) {
  211. if (isZero(tf.getText())) {
  212. tf.setText("5");
  213. } else {
  214. tf.setText(tf.getText().concat("5"));
  215. }
  216. } else if (e.getSource().equals(b6)) {
  217. if (isZero(tf.getText())) {
  218. tf.setText("6");
  219. } else {
  220. tf.setText(tf.getText().concat("6"));
  221. }
  222. } else if (e.getSource().equals(b7)) {
  223. if (isZero(tf.getText())) {
  224. tf.setText("7");
  225. } else {
  226. tf.setText(tf.getText().concat("7"));
  227. }
  228. } else if (e.getSource().equals(b8)) {
  229. if (isZero(tf.getText())) {
  230. tf.setText("8");
  231. } else {
  232. tf.setText(tf.getText().concat("8"));
  233. }
  234. } else if (e.getSource().equals(b9)) {
  235. if (isZero(tf.getText())) {
  236. tf.setText("9");
  237. } else {
  238. tf.setText(tf.getText().concat("9"));
  239. }
  240. } else if (e.getSource().equals(bpoint)) {
  241. if (point < 1) {
  242. tf.setText(tf.getText().concat("."));
  243. point = 1;
  244. } else {
  245.  
  246. }
  247. } else if (e.getSource().equals(sqrt)) {
  248.  
  249. double val = Double.parseDouble(tf.getText());
  250.  
  251. if (val < 0) {
  252. tf.setText("Invalid input");
  253. } else {
  254. point = 1;
  255. val = Math.sqrt(val);
  256. tf.setText(String.valueOf(val));
  257. }
  258. } else if (e.getSource().equals(inv)) {
  259.  
  260. double val = Double.valueOf(tf.getText());
  261.  
  262. if (val == 0) {
  263. tf.setText("∞");
  264. } else {
  265. point = 1;
  266. val = 1 / val;
  267. tf.setText(String.valueOf(val));
  268. }
  269. } else if (e.getSource().equals(plusminus)) {
  270. double val = Double.valueOf(tf.getText());
  271.  
  272. if (val == 0) {
  273. tf.setText("0");
  274. } else {
  275. point = 1;
  276. val = -val;
  277. tf.setText(String.valueOf(val));
  278. }
  279. }
  280.  
  281. }
  282.  
  283. public void actionPerformed(ActionEvent e) {
  284.  
  285. if (tf.getText().equals("+") || tf.getText().equals("-") || tf.getText().equals("×")
  286. || tf.getText().equals("÷")) {
  287.  
  288. tf.setText("");
  289. getInput(e);
  290.  
  291. } else if (e.getSource().equals(clear)) {
  292. point = 0;
  293. tf.setText("0");
  294. } else if (e.getSource().equals(del)) {
  295.  
  296. String s = tf.getText();
  297. tf.setText("");
  298.  
  299. if (s.equals("∞")) {
  300. tf.setText("0");
  301. point = 0;
  302. } else if (s.equals("Invalid input")) {
  303. tf.setText("0");
  304. point = 0;
  305. } else if (Double.valueOf(s) < 0) {
  306.  
  307. if (s.length() < 3) {
  308.  
  309. if (s.matches("-")) {
  310. point = 0;
  311. tf.setText("0");
  312. } else {
  313. point = 0;
  314. tf.setText("0");
  315. }
  316. } else {
  317.  
  318. for (int i = 0; i < s.length() - 1; i++) {
  319. tf.setText(tf.getText() + s.charAt(i));
  320. }
  321.  
  322. if (tf.getText().contains(".")) {
  323. point = 1;
  324. } else {
  325. point = 0;
  326. }
  327.  
  328. }
  329. } else {
  330.  
  331. if (s.length() < 2) {
  332.  
  333. /*
  334. * if (s.matches("-")) { Text = "0"; tf.setText(Text); } else {
  335. */
  336. point = 0;
  337. tf.setText("0");
  338. // }
  339. } else {
  340.  
  341. for (int i = 0; i < s.length() - 1; i++) {
  342. tf.setText(tf.getText() + s.charAt(i));
  343. }
  344.  
  345. if (tf.getText().contains(".")) {
  346. point = 1;
  347. } else {
  348. point = 0;
  349. }
  350.  
  351. }
  352. }
  353.  
  354. } else if (tf.getText().equals("∞")) {
  355.  
  356. } else if (tf.getText().equals("Invalid input")) {
  357.  
  358. } else if (e.getSource().equals(add)) {
  359.  
  360. a = Double.valueOf(tf.getText());
  361. operator = 1;
  362. tf.setText("+");
  363. } else if (e.getSource().equals(sub)) {
  364.  
  365. a = Double.valueOf(tf.getText());
  366. operator = 2;
  367. tf.setText("-");
  368. } else if (e.getSource().equals(mul)) {
  369.  
  370. a = Double.valueOf(tf.getText());
  371. operator = 3;
  372. tf.setText("×");
  373.  
  374. } else if (e.getSource().equals(div)) {
  375.  
  376. a = Double.valueOf(tf.getText());
  377. operator = 4;
  378. tf.setText("÷");
  379. } else if (e.getSource().equals(equal)) {
  380.  
  381. point = 1;
  382. tf.setText(calcInput(operator, a));
  383. } else {
  384. getInput(e);
  385. }
  386.  
  387. }
  388.  
  389. private String calcInput(int operator, double a) {
  390.  
  391. b = Double.valueOf(tf.getText());
  392. String Result;
  393.  
  394. switch (operator) {
  395.  
  396. case 1:
  397. result = a + b;
  398. break;
  399. case 2:
  400. result = a - b;
  401. break;
  402. case 3:
  403. result = a * b;
  404. break;
  405. case 4:
  406. if (b != 0)
  407. result = a / b;
  408. else {
  409. result = 0;
  410. tf.setText("∞");
  411. }
  412. }
  413.  
  414. if (b == 0)
  415. Result = "∞";
  416. else
  417. Result = String.valueOf(result);
  418.  
  419. operator = 0;
  420.  
  421. return Result;
  422. }
  423. }
  424.  
  425. public class Calc {
  426.  
  427. public static void main(String[] args) {
  428.  
  429. new Cal();
  430. }
  431. }
  432.  
  433. class OpButton extends JButton {
  434.  
  435. private Color bgcolor, frcolor;
  436.  
  437. OpButton(String op) {
  438.  
  439. super(op);
  440. setBorderPainted(false);
  441. setFocusPainted(false);
  442.  
  443. setFont(new Font("Segoi UI", Font.PLAIN, 22));
  444. bgcolor = new Color(0, 153, 255);
  445. frcolor = Color.WHITE;
  446.  
  447. setContentAreaFilled(false);
  448. setOpaque(true);
  449.  
  450. setBackground(bgcolor);
  451. setForeground(frcolor);
  452. setText(op);
  453.  
  454. addChangeListener(new ChangeListener() {
  455.  
  456. @Override
  457. public void stateChanged(ChangeEvent evt) {
  458. if (getModel().isPressed()) {
  459. setBackground(bgcolor.darker().darker());
  460. } else if (getModel().isRollover()) {
  461. setBackground(bgcolor.darker());
  462. } else {
  463. setBackground(bgcolor);
  464. }
  465. }
  466. });
  467. }
  468.  
  469. }
  470.  
  471. class DigitButton extends JButton {
  472.  
  473. private Color bgcolor, color2;
  474. final static long serialVersionUID = 2;
  475.  
  476. DigitButton(String digit) {
  477.  
  478. super(digit);
  479. setBorderPainted(false);
  480. setFocusPainted(false);
  481.  
  482. bgcolor = Color.WHITE;
  483. color2 = new Color(0, 153, 255);
  484.  
  485. setFont(new Font("Segoi UI", Font.BOLD, 22));
  486.  
  487. setContentAreaFilled(false);
  488. setOpaque(true);
  489.  
  490. // setForeground(Color.BLACK.darker().darker());
  491.  
  492. setText(digit);
  493.  
  494. setBackground(bgcolor);
  495. setForeground(color2);
  496.  
  497. addChangeListener(new ChangeListener() {
  498.  
  499. @Override
  500. public void stateChanged(ChangeEvent evt) {
  501. /*
  502. * if (getModel().isPressed()) { setBackground(bgcolor.darker().darker()); //
  503. * setForeground(Color.WHITE); } else if (getModel().isRollover()) {
  504. * setBackground(bgcolor.darker().darker()); // setForeground(Color.WHITE); }
  505. * else { // setForeground(color2); setBackground(bgcolor.darker()); }
  506. */
  507. if (getModel().isPressed()) {
  508. setBackground(bgcolor.darker().darker());
  509. setForeground(Color.WHITE);
  510. } else if (getModel().isRollover()) {
  511. setBackground(bgcolor.darker());
  512. setForeground(Color.WHITE);
  513. } else {
  514. setBackground(bgcolor);
  515. setForeground(color2);
  516. }
  517. }
  518. });
  519.  
  520. }
  521.  
  522. }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement
Public Pastes
Advertisement
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!