Create Calculator In Java Application Program

To write a program in Java to perform arithmetic operations using java applet IT1403 Software Components LAB

Source code programming Algorithm
Step 1: Import necessary packages.
Step 2: Write applet code which should specify width and height of applet window.
Step 3: Create a class MyApplet implement the ActionListener interface.
Step 4: Define necessary labels, buttons and text field and add it to the applet window.
Step 5: Define the method actionPerformed.
Step 6: Write the logic for each arithmetic operations in that method.
Step 7: Compile and execute the program.
How to Create Calculator

Program in Java Appliation IT1403
import java.applet.*;
import java.awt.event.*;
import java.awt.*;
//
public class Calc extends Applet implements ActionListener
{
int Conclusion=0;
Label l1,l2,l3;
Button b1,b2,b3,b4;
TextField t1,t2,t3;
public void init()
{
l1=new Label("Input 1");
l2=new Label("Input 2");
l3=new Label("Output");
b1=new Button("ADD");
b2=new Button("SUB");
b3=new Button("MULTIPLY");
b4=new Button("DIVIDE");
t1=new TextField(10);
t2=new TextField(10);
t3=new TextField(10);
l1.setBackground(new Color(150,150,150));
l2.setBackground(new Color(150,150,150));
l3.setBackground(new Color(150,150,150));
l1.setBounds(100,100,100,25);
l2.setBounds(100,150,100,25);
l3.setBounds(100,200,100,25);
t1.setBounds(220,100,100,25);
t2.setBounds(220,150,100,25);
t3.setBounds(220,200,100,25);
b1.setBounds(100,300,100,25);
b2.setBounds(200,300,100,25);
b3.setBounds(300,300,100,25);
b4.setBounds(400,300,100,25);
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
b4.addActionListener(this);
add(l1);
add(l2);
add(l3);
add(b1);
add(b2);
add(b3);
add(b4);
add(t1);
add(t2);
add(t3);
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==b1)
{
Conclusion=Integer.parseInt(t1.getText())+Integer.parseInt(t2.getText());
t3.setText(String.valueOf(Conclusion));
}

{
if(e.getSource()==b2)
Conclusion=Integer.parseInt(t1.getText())-Integer.parseInt(t2.getText());
t3.setText(String.valueOf(Conclusion));
}

{
if(e.getSource()==b3)
Conclusion=Integer.parseInt(t1.getText())*Integer.parseInt(t2.getText());
t3.setText(String.valueOf(Conclusion));
}
{
if(e.getSource()==b4)
Conclusion=Integer.parseInt(t1.getText())/Integer.parseInt(t2.getText());
t3.setText(String.valueOf(Conclusion));
}
}
}

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