mport javax.swing.*;
\nimport javax.swing.event.*;
\nimport java.awt.*;
\nimport java.awt.event.*;
\npublic class Jisuanqi extends JFrame implements ActionListener {
\n Result result = new Result(); \/\/\u5b9a\u4e49text\u7684\u9762\u677f
\n Number_Key number_key = new Number_Key(); \/\/\u5b9a\u4e49\u6309\u94ae\u9762\u677f
\n \/\/\u5f53\u70b9\u51fb\u6309\u94ae+\u3001-\u3001*\u3001\/\u65f6\uff0ccom = true
\n boolean com = false;
\n \/\/\u5f53i=0\u65f6\u8bf4\u660e\u662f\u6211\u4eec\u7b2c\u4e00\u6b21\u8f93\u5165\uff0c\u5b57\u7b26\u4e32text\u4e0d\u4f1a\u7d2f\u52a0
\n int i = 0;
\n \/\/\u5b58\u653etext\u7684\u5185\u5bb9
\n String text = “”;
\n \/\/\u5b58\u653e\u70b9\u51fb\u6309\u94ae+\u3001-\u3001*\u3001\/\u4e4b\u524d\u7684\u6570\u503c
\n double defbutton = 0;
\n \/\/+\u3001-\u3001*\u3001\/\u7684\u4ee3\u53f7\u5206\u522b\u4e3a1\uff0c2\uff0c3\uff0c4
\n int symbol = 0;
\n \/\/\u6784\u9020\u51fd\u6570
\n Jisuanqi() {
\n super(“WangJiao”); \/\/\u8bbe\u5b9a\u6807\u9898
\n setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); \/\/\u8bbe\u5b9a\u5173\u95ed\u7a97\u4f53\u65f6\u9000\u51fa\u7a0b\u5e8f
\n JPanel pane = new JPanel(); \/\/\u5b9a\u4e49\u4e3b\u9762\u677f
\n pane.setLayout(new BorderLayout());
\n setBounds(380,220,30,80); \/\/\u524d\u4e24\u4e2a\u53c2\u6570\u662f\u5728\u5c4f\u5e55\u4e0a\u663e\u793a\u7684\u5750\u6807\uff0c\u540e\u4e24\u4e2a\u662f\u5927\u5c0f
\n \/\/\u66ff\u6362\u56fe\u6807
\n ImageIcon icon=new ImageIcon(
\n Jisuanqi.class.getResource(“APPLE.GIF”)
\n );
\n setIconImage(icon.getImage());
\n pane.add(result, BorderLayout.NORTH);
\n pane.add(number_key, BorderLayout.CENTER);
\n pane.add(number_key.equal, BorderLayout.SOUTH);
\n number_key.one.addActionListener(this); \/\/\u5bf91\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.two.addActionListener(this); \/\/\u5bf92\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.three.addActionListener(this); \/\/\u5bf93\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.four.addActionListener(this); \/\/\u5bf94\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.five.addActionListener(this); \/\/\u5bf95\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.six.addActionListener(this); \/\/\u5bf96\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.seven.addActionListener(this); \/\/\u5bf97\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.eight.addActionListener(this); \/\/\u5bf98\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.nine.addActionListener(this); \/\/\u5bf99\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.zero.addActionListener(this); \/\/\u5bf90\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.ce.addActionListener(this); \/\/\u5bf9\u7f6e\u96f6\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.plus.addActionListener(this); \/\/\u5bf9+\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.equal.addActionListener(this); \/\/\u5bf9=\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.sub.addActionListener(this); \/\/\u5bf9-\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.mul.addActionListener(this); \/\/\u5bf9*\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.div.addActionListener(this); \/\/\u5bf9\/\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n number_key.point.addActionListener(this); \/\/\u5bf9.\u6309\u94ae\u6dfb\u52a0\u76d1\u542c\u4e8b\u4ef6
\n setContentPane(pane);
\n pack(); \/\/\u521d\u59cb\u5316\u7a97\u4f53\u5927\u5c0f\u4e3a\u6b63\u597d\u76db\u653e\u6240\u6709\u6309\u94ae
\n }
\n\/\/\u5404\u4e2a\u6309\u94ae\u89e6\u53d1\u7684\u4e8b\u4ef6
\n public void actionPerformed(ActionEvent e) {
\n\/*\u5982\u679c\u662f\u70b9\u51fb\u6570\u5b57\u6309\u94ae\u90a3\u4e48\u5148\u8981\u5224\u65ad\u662f\u5426\u5728\u6b64\u4e4b\u524d\u70b9\u51fb\u4e86+\u3001-\u3001*\u3001\/\u3001=\uff0c\u5982\u679c\u662f\u90a3\u4e48com=true
\n* \u5982\u679c\u6ca1\u6709com= false;\u6216\u8005\u662f\u5426\u70b9\u51fb\u6570\u5b57\u952e\uff0c\u5982\u679c\u662fi = 1,\u5982\u679c\u6ca1\u6709 i = 0;
\n**\/
\n if (e.getSource() == number_key.one) {
\n if (com || i == 0) {
\n result.text.setText(“1”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “1”);
\n }
\n } else if (e.getSource() == number_key.two) {
\n if (com || i == 0) {
\n result.text.setText(“2”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “2”);
\n }
\n } else if (e.getSource() == number_key.three) {
\n if (com || i == 0) {
\n result.text.setText(“3”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “3”);
\n }
\n } else if (e.getSource() == number_key.four) {
\n if (com || i == 0) {
\n result.text.setText(“4”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “4”);
\n }
\n } else if (e.getSource() == number_key.five) {
\n if (com || i == 0) {
\n result.text.setText(“5”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “5”);
\n }
\n } else if (e.getSource() == number_key.six) {
\n if (com || i == 0) {
\n result.text.setText(“6”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “6”);
\n }
\n } else if (e.getSource() == number_key.seven) {
\n if (com || i == 0) {
\n result.text.setText(“7”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “7”);
\n }
\n } else if (e.getSource() == number_key.eight) {
\n if (com || i == 0) {
\n result.text.setText(“8”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “8”);
\n }
\n } else if (e.getSource() == number_key.nine) {
\n if (com || i == 0) {
\n result.text.setText(“9”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n result.text.setText(text + “9”);
\n }
\n }
\n \/*\u5bf9\u4e8e0\u8fd9\u4e2a\u6309\u94ae\u6709\u4e00\u5b9a\u7684\u8bf4\u6cd5\uff0c\u5728\u6211\u7684\u7a0b\u5e8f\u91cc\u4e0d\u4f1a\u51fa\u73b0\u598200000\u8fd9\u6837\u7684\u60c5\u51b5\uff0c\u6211\u52a0\u4e86\u5224\u65ad\u6761\u4ef6\u5c31\u662f
\n * \u5982\u679ctext\u4e2d\u7684\u6570\u503c=0\u5c31\u8981\u5224\u65ad\u5728\u8fd9\u4e2a\u6570\u503c\u4e2d\u662f\u5426\u6709.\u5b58\u5728?\u5982\u679c\u6709\u90a3\u4e48\u5c31\u5728\u539f\u6765\u6570\u503c\u57fa\u7840\u4e4b\u4e0a\u6dfb
\n * \u52a00;\u5426\u5219\u4fdd\u6301\u539f\u6765\u7684\u6570\u503c\u4e0d\u53d8
\n *\/
\n else if (e.getSource() == number_key.zero) { \/\/result.text.getText()\u662f\u5f97\u5230text\u91cc\u5185\u5bb9\u7684\u610f\u601d
\n if (com || i == 0) {
\n result.text.setText(“0”);
\n com = false;
\n i = 1;
\n } else {
\n text = result.text.getText();
\n if (Float.parseFloat(text) > 0 || Float.parseFloat(text) < 0) { \/\/Float.parseFloat(text)\u5c31\u662f\u7c7b\u578b\u8f6c\u6362\u4e86\uff0c\u4e0b\u9762\u90fd\u662f\u4e00\u6837\n result.text.setText(text + \"0\");\n } else {\n if (text.trim().indexOf(\".\") == -1) {\n result.text.setText(text);\n } else {\n result.text.setText(text + \"0\");\n }\n }\n }\n } else if (e.getSource() == number_key.ce) {\n result.text.setText(\"0\");\n i = 0;\n com = true;\n }\n \/*\u672c\u7a0b\u5e8f\u4e0d\u4f1a\u8ba9\u4e00\u4e2a\u6570\u503c\u4e2d\u51fa\u73b02\u4e2a\u4ee5\u4e0a\u7684\u5c0f\u6570\u70b9.\u5177\u4f53\u505a\u6cd5\u662f:\u5224\u65ad\u662f\u5426\u5df2\u7ecf\u5b58\u5728.\u5b58\u5728\u5c31\u4e0d\u6dfb\u52a0,\n * \u4e0d\u5b58\u5728\u5c31\u6dfb\u52a0.\n *\/\n else if (e.getSource() == number_key.point) {\n if (com || i == 0) {\n result.text.setText(\"0.\");\n com = false;\n i = 1;\n } else {\n text = result.text.getText();\n if (text.trim().indexOf(\".\") == -1) {\n result.text.setText(text + \".\");\n } else {\n result.text.setText(text);\n }\n }\n } \/\/\u83b7\u5f97\u70b9\u51fb+\u4e4b\u524d\u7684\u6570\u503c\n else if (e.getSource() == number_key.plus) {\n com = true;\n i = 0;\n defbutton = Double.parseDouble(result.text.getText());\n symbol = 1;\n } \/\/\u83b7\u5f97\u70b9\u51fb-\u4e4b\u524d\u7684\u6570\u503c\n else if (e.getSource() == number_key.sub) {\n com = true;\n i = 0;\n defbutton = Double.parseDouble(result.text.getText());\n symbol = 2;\n } \/\/\u83b7\u5f97\u70b9\u51fb*\u4e4b\u524d\u7684\u6570\u503c\n else if (e.getSource() == number_key.mul) {\n com = true;\n i = 0;\n defbutton = Double.parseDouble(result.text.getText());\n System.out.println(defbutton);\n symbol = 3;\n } \/\/\u83b7\u5f97\u70b9\u51fb\/\u4e4b\u524d\u7684\u6570\u503c\n else if (e.getSource() == number_key.div) {\n com = true;\n i = 0;\n defbutton = Double.parseDouble(result.text.getText());\n symbol = 4;\n } else if (e.getSource() == number_key.equal) {\n switch (symbol) {\n case 1 : \/\/\u8ba1\u7b97\u52a0\u6cd5\n {\n double ad =\n defbutton + Double.parseDouble(result.text.getText());\n result.text.setText(ad + \"\");\n i = 0;\n text = \"\";\n break;\n }\n case 2 :\/\/\u8ba1\u7b97\u51cf\u6cd5\n {\n double ad =\n defbutton - Double.parseDouble(result.text.getText());\n result.text.setText(String.valueOf(ad));\n i = 0;\n text = \"\";\n break;\n }\n case 3 :\/\/\u8ba1\u7b97\u4e58\u6cd5\n {\n double ad =\n defbutton * Double.parseDouble(result.text.getText());\n result.text.setText(ad + \"\");\n i = 0;\n text = \"\";\n break;\n }\n case 4 :\/\/\u8ba1\u7b97\u9664\u6cd5\n {\n double ad =\n defbutton \/ Double.parseDouble(result.text.getText());\n result.text.setText(ad + \"\");\n i = 0;\n text = \"\";\n break;\n }\n }\n System.out.println(com);\n }\n }\n public static void main(String[] args) {\n Jisuanqi loveyou = new Jisuanqi();\n loveyou.show();\n }\n}\nimport javax.swing.*;\nimport java.awt.*;\nimport java.awt.event.*;\n\/\/\u8ba1\u7b97\u5668\u6570\u5b57\u6309\u94ae\u5b9a\u4e49\u9762\u677f\nclass Number_Key extends JPanel {\n JButton zero = new JButton(\"0\"); \/\/\u6570\u5b57\u952e0\n JButton one = new JButton(\"1\"); \/\/\u6570\u5b57\u952e1\n JButton two = new JButton(\"2\"); \/\/\u6570\u5b57\u952e2\n JButton three = new JButton(\"3\"); \/\/\u6570\u5b57\u952e3\n JButton four = new JButton(\"4\"); \/\/\u6570\u5b57\u952e4\n JButton five = new JButton(\"5\"); \/\/\u6570\u5b57\u952e5\n JButton six = new JButton(\"6\"); \/\/\u6570\u5b57\u952e6\n JButton seven = new JButton(\"7\"); \/\/\u6570\u5b57\u952e7\n JButton eight = new JButton(\"8\"); \/\/\u6570\u5b57\u952e8\n JButton nine = new JButton(\"9\"); \/\/\u6570\u5b57\u952e9\n JButton plus = new JButton(\"+\");\n JButton sub = new JButton(\"-\");\n JButton mul = new JButton(\"*\");\n JButton div = new JButton(\"\/\");\n JButton equal = new JButton(\"=\");\n JButton ce = new JButton(\"\u6e05\u96f6\"); \/\/\u7f6e\u96f6\u952e\n JButton point = new JButton(\".\");\n Number_Key() {\n setLayout(new GridLayout(4, 4, 1, 1)); \/\/\u5b9a\u4e49\u5e03\u5c40\u7ba1\u7406\u5668\u4e3a\u7f51\u683c\u5e03\u5c40\n setBackground(Color.blue); \/\/\u8bbe\u7f6e\u80cc\u666f\u989c\u8272\n \/\/\u6dfb\u52a0\u6309\u94ae\n add(one);\n add(two);\n add(three);\n add(four);\n add(five);\n add(six);\n add(seven);\n add(eight);\n add(nine);\n add(zero);\n add(plus);\n add(sub);\n add(mul);\n add(div);\n add(point);\n add(equal);\n add(ce);\n }\n}\nimport javax.swing.*;\nimport java.awt.*;\nimport java.awt.event.*;\n \/\/\u8ba1\u7b97\u5668\u663e\u793a\u7ed3\u679c\u7684\u7a97\u4f53\nclass Result extends JPanel {\n \/\/text\u5148\u662f\u8f93\u5165\u548c\u7ed3\u679c\n JTextField text = new JTextField(\"0\");\n Result() { \/\/\u8bb2\u8f93\u5165\u7684\u6570\u5b57\u6216\u5f97\u5230\u7684\u7ed3\u679c\u5728text\u7684\u53f3\u8fb9\u663e\u793a\n text.setHorizontalAlignment(SwingConstants.RIGHT);\n text.enable(false); \/\/\u6587\u672c\u6846\u4e0d\u80fd\u7f16\u8f91\n setLayout(new BorderLayout()); \/\/\u8bbe\u5b9a\u5e03\u5c40\u7ba1\u7406\u5668\u8fb9\u6846\u5e03\u5c40\n add(text, BorderLayout.CENTER); \/\/text\u653e\u7f6e\u5728\u7a97\u4f53\u7684\u4e2d\u95f4\n }\n}\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
mport javax.swin...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[59,49,5,21,11,143,17,50,108,8],"class_list":["post-178","post","type-post","status-publish","format-standard","hentry","category-3","tag-59","tag-49","tag-5","tag-21","tag-11","tag-143","tag-17","tag-50","tag-108","tag-8"],"_links":{"self":[{"href":"https:\/\/out.cat\/index.php?rest_route=\/wp\/v2\/posts\/178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/out.cat\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/out.cat\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/out.cat\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/out.cat\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=178"}],"version-history":[{"count":0,"href":"https:\/\/out.cat\/index.php?rest_route=\/wp\/v2\/posts\/178\/revisions"}],"wp:attachment":[{"href":"https:\/\/out.cat\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/out.cat\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/out.cat\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}