Calculator.java

@@ -1,120 +1,120 @@
-package java6324.lesson06;
+package java6324.lesson06;
-
+
-import javax.swing.*;
+import javax.swing.*;
-import java.awt.*;
+import java.awt.*;
-import java.awt.event.ActionEvent;
+import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
+import java.awt.event.ActionListener;
-
+
-public class Calculator extends JFrame {
+public class Calculator extends JFrame {
-    private JTextField input1, input2, result;
+    private JTextField input1, input2, result;
-    private JButton addButton, subtractButton, multiplyButton, divideButton, modButton;
+    private JButton addButton, subtractButton, multiplyButton, divideButton, modButton;
-    private JPanel panel;
+    private JPanel panel;
-
+
-    public Calculator() {
+    public Calculator() {
-        setTitle("Simple Calculator");
+        setTitle("Simple Calculator");
-        setSize(300, 200);
+        setSize(300, 200);
-        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-        setLayout(new GridLayout(5, 4, 5, 5));
+        setLayout(new GridLayout(5, 4, 5, 5));
-        panel = new JPanel();
+        panel = new JPanel();
-        panel.setLayout(new GridLayout(5, 4, 5, 5));
+        panel.setLayout(new GridLayout(5, 4, 5, 5));
-
+
-        input1 = new JTextField(5);
+        input1 = new JTextField(5);
-        input2 = new JTextField(5);
+        input2 = new JTextField(5);
-        result = new JTextField(5);
+        result = new JTextField(5);
-        result.setEditable(false);
+        result.setEditable(false);
-
+
-        addButton = new JButton("+");
+        addButton = new JButton("+");
-        subtractButton = new JButton("-");
+        subtractButton = new JButton("-");
-        multiplyButton = new JButton("*");
+        multiplyButton = new JButton("*");
-        divideButton = new JButton("/");
+        divideButton = new JButton("/");
-        modButton = new JButton("%");
+        modButton = new JButton("%");
-
+
-        addButton.addActionListener(new ActionListener() {
+        addButton.addActionListener(new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
+            public void actionPerformed(ActionEvent e) {
-                calculate(1);
+                calculate(1);
-            }
+            }
-        });
+        });
-
+
-        subtractButton.addActionListener(new ActionListener() {
+        subtractButton.addActionListener(new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
+            public void actionPerformed(ActionEvent e) {
-                calculate(2);
+                calculate(2);
-            }
+            }
-        });
+        });
-
+
-        multiplyButton.addActionListener(new ActionListener() {
+        multiplyButton.addActionListener(new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
+            public void actionPerformed(ActionEvent e) {
-                calculate(3);
+                calculate(3);
-            }
+            }
-        });
+        });
-
+
-        divideButton.addActionListener(new ActionListener() {
+        divideButton.addActionListener(new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
+            public void actionPerformed(ActionEvent e) {
-                calculate(4);
+                calculate(4);
-            }
+            }
-        });
+        });
-
+
-        modButton.addActionListener(new ActionListener() {
+        modButton.addActionListener(new ActionListener() {
-            public void actionPerformed(ActionEvent e) {
+            public void actionPerformed(ActionEvent e) {
-                calculate(5);
+                calculate(5);
-            }
+            }
-        });
+        });
-
+
-        panel.add(new JLabel("Input 1:"));
+        panel.add(new JLabel("Input 1:"));
-        panel.add(input1);
+        panel.add(input1);
-        panel.add(new JLabel("Input 2:"));
+        panel.add(new JLabel("Input 2:"));
-        panel.add(input2);
+        panel.add(input2);
-        panel.add(addButton);
+        panel.add(addButton);
-        panel.add(subtractButton);
+        panel.add(subtractButton);
-        panel.add(multiplyButton);
+        panel.add(multiplyButton);
-        panel.add(divideButton);
+        panel.add(divideButton);
-        panel.add(modButton);
+        panel.add(modButton);
-        panel.add(new JLabel());
+        panel.add(new JLabel());
-        panel.add(result);
+        panel.add(result);
-
+
-        add(panel);
+        add(panel);
-        setVisible(true);
+        setVisible(true);
-    }
+    }
-
+
-    private void calculate(int operation) {
+    private void calculate(int operation) {
-        try {
+        try {
-            double num1 = Double.parseDouble(input1.getText());
+            double num1 = Double.parseDouble(input1.getText());
-            double num2 = Double.parseDouble(input2.getText());
+            double num2 = Double.parseDouble(input2.getText());
-            double res = 0;
+            double res = 0;
-
+
-            switch (operation) {
+            switch (operation) {
-                case 1:
+                case 1:
-                    res = num1 + num2;
+                    res = num1 + num2;
-                    break;
+                    break;
-                case 2:
+                case 2:
-                    res = num1 - num2;
+                    res = num1 - num2;
-                    break;
+                    break;
-                case 3:
+                case 3:
-                    res = num1 * num2;
+                    res = num1 * num2;
-                    break;
+                    break;
-                case 4:
+                case 4:
-                    if (num2 != 0) {
+                    if (num2 != 0) {
-                        res = num1 / num2;
+                        res = num1 / num2;
-                    } else {
+                    } else {
-                        result.setText("Error");
+                        result.setText("Error");
-                        return;
+                        return;
-                    }
+                    }
-                    break;
+                    break;
-                case 5:
+                case 5:
-                    if (num2 != 0) {
+                    if (num2 != 0) {
-                        res = num1 % num2;
+                        res = num1 % num2;
-                    } else {
+                    } else {
-                        result.setText("Error");
+                        result.setText("Error");
-                        return;
+                        return;
-                    }
+                    }
-                    break;
+                    break;
-            }
+            }
-            result.setText(String.valueOf(res));
+            result.setText(String.valueOf(res));
-        } catch (NumberFormatException e) {
+        } catch (NumberFormatException e) {
-            result.setText("Invalid Input");
+            result.setText("Invalid Input");
-        }
+        }
-    }
+    }
-
+
-    public static void main(String[] args) {
+    public static void main(String[] args) {
-        new Calculator();
+        new Calculator();
-    }
+    }
-}
+}

README.md

@@ -0,0 +1,2 @@
+# zynlwj
+