5/17/2016

Java Program For Calculator Using AWT Controls (GUI)

Write a Java Program for Calculator Operations Using AWT Controls

How To Run AWT & SWING Programs In Java Click Here

Code Start Form Here You Can Download A Code By Clicking Atleast One Ads Download Link Is At The Bottom

CALCULATOR.JAVA

import java.awt.*;
import java.awt.event.*;
import java.applet.*;

//<applet code = "CALCULATOR.class" width = 260 height = 310></applet>

public class CALCULATOR extends Applet implements ActionListener
{
TextField t1;
Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b0;
Button add,sub,mul,div, eql, dot;
String msg="",tmp;
int a, b;
public void init()
{
setLayout(null);
t1=new TextField(20);
b1=new Button("1");
b2=new Button("2");
b3=new Button("3");
b4=new Button("4");
b5=new Button("5");
b6=new Button("6");
b7=new Button("7");
b8=new Button("8");
b9=new Button("9");
b0=new Button("0");
add=new Button("+"); 
sub=new Button("-");
div=new Button("/"); 
mul=new Button("*");
dot=new Button("."); 
eql=new Button("=");

add(t1); 
add(b7); 
add(b8); 
add(b9); 
add(div);

add(b4); 
add(b5); 
add(b6);
add(mul);

add(b1); 
add(b2); 
add(b3); 
add(sub);

add(dot); 
add(b0); 
add(eql);
add(add);

t1.setBounds(30,30,200,40);
b7.setBounds(30,80,44,44);
b8.setBounds(82,80,44,44);
b9.setBounds(134,80,44,44);
b4.setBounds(30,132,44,44);
b5.setBounds(82,132,44,44);
b6.setBounds(134,132,44,44);
b1.setBounds(30,184,44,44);
b2.setBounds(82,184,44,44);
b3.setBounds(134,184,44,44);
dot.setBounds(30,236,44,44);
b0.setBounds(82,236,44,44);
eql.setBounds(134,236,44,44);
add.setBounds(186,236,44,44);
sub.setBounds(186,184,44,44);
mul.setBounds(186,132,44,44);
div.setBounds(186,80,44,44);

b0.addActionListener(this);
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);
//b0.addActionListener(this);
div.addActionListener(this);
mul.addActionListener(this);
add.addActionListener(this);
sub.addActionListener(this);
eql.addActionListener(this);
}
public void actionPerformed(ActionEvent ae)
{
String str = ae.getActionCommand();
if (str.equals("+")||str.equals("-")||str.equals("*")||str.equals("/"))
{
String str1 = t1.getText();
tmp=str;
a = Integer.parseInt(str1);
msg="";
}
else if(str.equals("="))
{
String str2 = t1.getText();
b = Integer.parseInt(str2);
int sum=0;
if(tmp=="+")
sum=a+b;
else if(tmp=="-")
sum=a-b;
else if(tmp=="*")
sum=a*b;
else if(tmp=="/")
sum=a/b;
String str1=String.valueOf(sum);
t1.setText(""+str1);
msg="";
}
else
{
//String ae.getActionCommand();
//str += ae.getActionCommand();
msg+=str;
t1.setText(""+msg);
}
}
public void paint(Graphics g)
{
g.setColor(Color.cyan);
g.fillRect(20,20,220,270);
}
}

Output:-


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Ghanendra Yadav

Ghanendra Yadav

Hello, I Am Ghanendra Yadav Owner of This Blog, I am professional Blogger and Programmer. I Love Programming, Logo Making, And Banner Designing. My Highest Qualification is MCA From NIT Warangal. You Can Find Me On Social Media Through Below Link And If You Have Any Query Related To Programming And Other Subject Comment Below or You Can Mail Me I Will Try To Answer Within 24 Hours Email:- yghanendra@student.nitw.ac.in

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