java web app calculator

Calc.java

@@ -0,0 +1,210 @@
+import javax.swing.*;
+import java.awt.event.*;
+
+
+class Calc implements ActionListener
+{
+    JFrame f;
+    JTextField t;
+    JButton b1,b2,b3,b4,b5,b6,b7,b8,b9,b0,bdiv,bmul,bsub,badd,bdec,beq,bdel,bclr;
+
+    static double a=0,b=0,result=0;
+    static int operator=0;
+
+    Calc()
+    {
+        f=new JFrame("Calculator");
+        t=new JTextField();
+        b1=new JButton("1");
+        b2=new JButton("2");
+        b3=new JButton("3");
+        b4=new JButton("4");
+        b5=new JButton("5");
+        b6=new JButton("6");
+        b7=new JButton("7");
+        b8=new JButton("8");
+        b9=new JButton("9");
+        b0=new JButton("0");
+        bdiv=new JButton("/");
+        bmul=new JButton("*");
+        bsub=new JButton("-");
+        badd=new JButton("+");
+        bdec=new JButton(".");
+        beq=new JButton("=");
+        bdel=new JButton("Delete");
+        bclr=new JButton("Clear");
+
+        t.setBounds(30,40,280,30);
+        b7.setBounds(40,100,50,40);
+        b8.setBounds(110,100,50,40);
+        b9.setBounds(180,100,50,40);
+        bdiv.setBounds(250,100,50,40);
+
+        b4.setBounds(40,170,50,40);
+        b5.setBounds(110,170,50,40);
+        b6.setBounds(180,170,50,40);
+        bmul.setBounds(250,170,50,40);
+
+        b1.setBounds(40,240,50,40);
+        b2.setBounds(110,240,50,40);
+        b3.setBounds(180,240,50,40);
+        bsub.setBounds(250,240,50,40);
+
+        bdec.setBounds(40,310,50,40);
+        b0.setBounds(110,310,50,40);
+        beq.setBounds(180,310,50,40);
+        badd.setBounds(250,310,50,40);
+
+        bdel.setBounds(60,380,100,40);
+        bclr.setBounds(180,380,100,40);
+
+        f.add(t);
+        f.add(b7);
+        f.add(b8);
+        f.add(b9);
+        f.add(bdiv);
+        f.add(b4);
+        f.add(b5);
+        f.add(b6);
+        f.add(bmul);
+        f.add(b1);
+        f.add(b2);
+        f.add(b3);
+        f.add(bsub);
+        f.add(bdec);
+        f.add(b0);
+        f.add(beq);
+        f.add(badd);
+        f.add(bdel);
+        f.add(bclr);
+
+        f.setLayout(null);
+        f.setVisible(true);
+        f.setSize(350,500);
+        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        f.setResizable(false);
+
+        b1.addActionListener(this);
+        b2.addActionListener(this);
+        b3.addActionListener(this);
+        b4.addActionListener(this);
+        b5.addActionListener(this);
+        b6.addActionListener(this);
+        b7.addActionListener(this);
+        b8.addActionListener(this);
+        b9.addActionListener(this);
+        b0.addActionListener(this);
+        badd.addActionListener(this);
+        bdiv.addActionListener(this);
+        bmul.addActionListener(this);
+        bsub.addActionListener(this);
+        bdec.addActionListener(this);
+        beq.addActionListener(this);
+        bdel.addActionListener(this);
+        bclr.addActionListener(this);
+    }
+
+    public void actionPerformed(ActionEvent e)
+    {
+        if(e.getSource()==b1)
+            t.setText(t.getText().concat("1"));
+
+        if(e.getSource()==b2)
+            t.setText(t.getText().concat("2"));
+
+        if(e.getSource()==b3)
+            t.setText(t.getText().concat("3"));
+
+        if(e.getSource()==b4)
+            t.setText(t.getText().concat("4"));
+
+        if(e.getSource()==b5)
+            t.setText(t.getText().concat("5"));
+
+        if(e.getSource()==b6)
+            t.setText(t.getText().concat("6"));
+
+        if(e.getSource()==b7)
+            t.setText(t.getText().concat("7"));
+
+        if(e.getSource()==b8)
+            t.setText(t.getText().concat("8"));
+
+        if(e.getSource()==b9)
+            t.setText(t.getText().concat("9"));
+
+        if(e.getSource()==b0)
+            t.setText(t.getText().concat("0"));
+
+        if(e.getSource()==bdec)
+            t.setText(t.getText().concat("."));
+
+        if(e.getSource()==badd)
+        {
+            a=Double.parseDouble(t.getText());
+            operator=1;
+            t.setText("");
+        } 
+
+        if(e.getSource()==bsub)
+        {
+            a=Double.parseDouble(t.getText());
+            operator=2;
+            t.setText("");
+        }
+
+        if(e.getSource()==bmul)
+        {
+            a=Double.parseDouble(t.getText());
+            operator=3;
+            t.setText("");
+        }
+
+        if(e.getSource()==bdiv)
+        {
+            a=Double.parseDouble(t.getText());
+            operator=4;
+            t.setText("");
+        }
+
+        if(e.getSource()==beq)
+        {
+            b=Double.parseDouble(t.getText());
+
+            switch(operator)
+            {
+                case 1: result=a+b;
+                    break;
+
+                case 2: result=a-b;
+                    break;
+
+                case 3: result=a*b;
+                    break;
+
+                case 4: result=a/b;
+                    break;
+
+                default: result=0;
+            }
+
+            t.setText(""+result);
+        }
+
+        if(e.getSource()==bclr)
+            t.setText("");
+
+        if(e.getSource()==bdel)
+        {
+            String s=t.getText();
+            t.setText("");
+            for(int i=0;i<s.length()-1;i++)
+            t.setText(t.getText()+s.charAt(i));
+        }        
+    }
+
+    public static void main(String...s)
+    {
+        new Calc();
+    }
+}

README.md

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+# android-calculatorpp
+Android Calculator
+
+# Android Calcuiator
+<io>SIMPLE JAVA CALCULATOR
+    <il>Easy Calculation</il>
+    </io>
+