calculator.java

Java/calculator.java

@@ -0,0 +1,95 @@
+package AdvJava;
+
+import java.awt.Button;
+import java.awt.Frame;
+import java.awt.Label;
+import java.awt.TextField;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+public class calc implements ActionListener {
+
+    Frame f = new Frame();
+    Label l1 = new Label("First Number");
+    Label l2 = new Label("Second Number");
+    Label l3 = new Label("Result");
+
+    TextField t1 = new TextField();
+    TextField t2 = new TextField();
+    TextField t3 = new TextField();
+
+    Button b1 = new Button("Add");
+    Button b2 = new Button("Sub");
+    Button b3 = new Button("Mul");
+    Button b4 = new Button("Div");
+    Button b5 = new Button("Cancel");
+
+    calc() {
+
+        l1.setBounds(50, 100, 100, 20);
+        l2.setBounds(50, 140, 100, 20);
+        l3.setBounds(50, 180, 100, 20);
+
+        t1.setBounds(200, 100, 100, 20);
+        t2.setBounds(200, 140, 100, 20);
+        t3.setBounds(200, 180, 100, 20);
+
+        b1.setBounds(50, 250, 50, 20);
+        b2.setBounds(110, 250, 50, 20);
+        b3.setBounds(170, 250, 50, 20);
+        b4.setBounds(230, 250, 50, 20);
+        b5.setBounds(290, 250, 50, 20);
+
+        f.add(l1);
+        f.add(l2);
+        f.add(l3);
+
+        f.add(t1);
+        f.add(t2);
+        f.add(t3);
+
+        f.add(b1);
+        f.add(b2);
+        f.add(b3);
+        f.add(b4);
+        f.add(b5);
+
+        b1.addActionListener(this);
+        b2.addActionListener(this);
+        b3.addActionListener(this);
+        b4.addActionListener(this);
+        b5.addActionListener(this);
+
+        f.setLayout(null);
+        f.setVisible(true);
+        f.setSize(400, 350);
+        f.setLocation(500, 200);
+    }
+
+    public void actionPerformed(ActionEvent e) {
+        int n1 = Integer.parseInt(t1.getText());
+        int n2 = Integer.parseInt(t2.getText());
+
+        if (e.getSource() == b1) {
+            t3.setText(String.valueOf(n1 + n2));
+        }
+        if (e.getSource() == b2) {
+            t3.setText(String.valueOf(n1 - n2));
+        }
+        if (e.getSource() == b3) {
+            t3.setText(String.valueOf(n1 * n2));
+        }
+        if (e.getSource() == b4) {
+            t3.setText(String.valueOf(n1 / n2));
+        }
+        if (e.getSource() == b5) {
+            System.exit(0);
+        }
+    }
+
+    public static void main(String[] args) {
+        new calc();
+
+    }
+
+}