This document contains code for a Java program that demonstrates different AWT layouts and concepts like swapping numbers, displaying personal details, concatenating strings, converting case, and calculating square and double of a number. The code contains classes that extend Frame and implement ActionListener to handle GUI components like labels, text fields, buttons etc and perform actions on button clicks.

1. Submitted By
Student Name
Kuldeep Singh
BCA 2st Year
Dezyne E’cole College

2. AWT Layouts of Java Programming
Submitted By
Student Name
Kuldeep singh
BCA – 2nd Year
Dezyne E’ Cole College
106/10, Civil Lines, Ajmer
Tel: 0145-2624679
www.dezyneecole.com
2015-2016

3. Acknowledgement
This AWT Layout on “Java Programming” was developed at Dezyne
E’cole College.
During the making of this project I have learnt a lot and I thank my mentor
Mr. Mukesh Sir for helping us during the making of project.
I thank my college “Dezyne E’cole College” for helping us to bring out our
skill.
Thank You
Student Name
Kuldeep Singh
BCA 2nd Year

4. Topic Name::Swaping
import java.awt.*;
import java.awt.event.*;
class swap extends Frame implements
ActionListener
{
Label lbl1,lbl2;

5. Button btn1,btn2,btn3;
Panel pnl1,pnl2,pnl3,pnl4;
public swap()
{
setSize(300,300);
lbl1=new Label("First No.");
lbl2=new Label("Second No.");
txt1=new TextField();
txt2=new TextField();
btn1=new Button("Swap");
btn2=new Button("Clear");
btn3=new Button("Exit");
pnl1=new Panel();
pnl2=new Panel();
pnl3=new Panel();
pnl4=new Panel();
GridLayout g1=new
GridLayout(1,2);
GridLayout g2=new
GridLayout(1,2);
GridLayout g3=new
GridLayout(1,3);
GridLayout g4=new
GridLayout(3,3);
pnl1.setLayout(g1);

6. pnl1.add(lbl1);
pnl1.add(lbl2);
pnl2.add(txt1);
pnl2.add(txt2);
pnl3.add(btn1);
pnl3.add(btn2);
pnl3.add(btn3);
pnl4.add(pnl1);
pnl4.add(pnl2);
pnl4.add(pnl3);
add(pnl4);
Font f1=new Font("arial",1,20);
lbl1.setFont(f1);
lbl2.setFont(f1);
txt1.setFont(f1);
txt2.setFont(f1);
btn1.setFont(f1);
btn2.setFont(f1);
btn3.setFont(f1);
lbl1.setBackground(new
Color(20,55,103));
lbl1.setForeground(new
Color(255,255,255));
lbl2.setBackground(new
Color(20,55,103));
lbl2.setForeground(new
Color(255,255,255));

7. btn1.setBackground(new Color(20,55,103));
btn1.setForeground(new
Color(255,255,255));
btn2.setBackground(new Color(20,55,103));
btn2.setForeground(new
Color(255,255,255));
btn3.setBackground(new Color(20,55,103));
btn3.setForeground(new
Color(255,255,255));
btn1.addActionListener(this);
btn2.addActionListener(this);
btn3.addActionListener(this);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
int a,b;
a=Integer.parseInt(txt1.getText());
b=Integer.parseInt(txt2.getText());
if(e.getSource()==btn1)
{
a=a+b;
b=a-b;
a=a-b;
txt1.setEditable(false);
txt2.setEditable(false);
txt1.setText(""+a);
txt2.setText(""+b);

8. else
if(e.getSource()==btn2)
{
txt1.setEditable(true);
txt2.setEditable(true);
txt1.setText("");
txt2.setText("");
}
else
if(e.getSource()==btn3)
{
System.exit(0);
}
}
public static void main(String []s)
{
swap sp=new swap();
}
}

9. Topic Name::Personal Details
mport java.awt.*;
import java.awt.event.*;
class details extends Frame implements ActionListener
{
Label
lblname,lblsrno,lblcity,lblmno,lbladdress,lbldetails;

10. TextField txtname,txtsrno,txtcity,txtmno,txtaddress;
Button ok,clr,ext;
TextArea txta;
Panel p1,p2,p3,p4,p5,p6,p7,p8;
public details()
{
setSize(400,500);
lblsrno=new Label("Sr No.");
lblname=new Label("Name");
lblcity=new Label("City");
lbladdress=new Label("Address");
lblmno=new Label("Mobile No.");
lbldetails=new Label("Details");
txtsrno=new TextField("");
txtname=new TextField("");
txtcity=new TextField("");
txtaddress=new TextField("");
txtmno=new TextField("");
txta=new TextArea("Details...........!!");
ok=new Button("Show");
clr=new Button("Clear");
ext=new Button("Exit");
Font f1=new Font("arial",0,24);
lblsrno.setFont(f1);
lblname.setFont(f1);
lblcity.setFont(f1);

11. lbladdress.setFont(f1);
lblmno.setFont(f1);
lbldetails.setFont(f1);
Font f2=new Font("arial",1,12);
txtsrno.setFont(f2);
txtname.setFont(f2);
txtcity.setFont(f2);
txtaddress.setFont(f2);
txtmno.setFont(f2);
txta.setFont(f2);
GridLayout g1=new GridLayout(1,2);
GridLayout g2=new GridLayout(1,2);
GridLayout g3=new GridLayout(1,2);
GridLayout g4=new GridLayout(1,2);
GridLayout g5=new GridLayout(1,2);
GridLayout g6=new GridLayout(1,2);
GridLayout g7=new GridLayout(1,3);
GridLayout g8=new GridLayout(7,7);
txtname.setSize(20,20);
p1=new Panel();
p2=new Panel();
p3=new Panel();
p4=new Panel();
p5=new Panel();
p6=new Panel();
p7=new Panel();
p8=new Panel();

12. p1.setLayout(g1);
p2.setLayout(g2);
p3.setLayout(g3);
p4.setLayout(g4);
p5.setLayout(g5);
p6.setLayout(g6);
p7.setLayout(g7);
p8.setLayout(g8);
p1.add(lblsrno); p1.add(txtsrno);
p2.add(lblname); p2.add(txtname);
p3.add(lblcity); p3.add(txtcity);
p4.add(lbladdress);
p4.add(txtaddress);
p5.add(lblmno); p5.add(txtmno);
p5.add(lblmno); p5.add(txtmno);
p6.add(lbldetails); p6.add(txta);
p7.add(ok); p7.add(clr); p7.add(ext);
p8.add(p1);
p8.add(p2);
p8.add(p3);
p8.add(p4);
p8.add(p5);
p8.add(p6);
p8.add(p7);
add(p8);
Font f3=new Font("arial",1,20);

13. clr.setFont(f3);
ext.setFont(f3);
lblname.setBackground(new
Color(102,12,12));
lblname.setForeground(new
Color(255,255,255));
lblsrno.setBackground(new Color(102,12,12));
lblsrno.setForeground(new
Color(255,255,255));
lblcity.setBackground(new Color(102,12,12));
lblcity.setForeground(new
Color(255,255,255));
lblmno.setBackground(new Color(102,12,12));
lblmno.setForeground(new
Color(255,255,255));
lbladdress.setBackground(new
Color(102,12,12));
lbladdress.setForeground(new
Color(255,255,255));
lbldetails.setBackground(new
Color(102,12,12));
lbldetails.setForeground(new
Color(255,255,255));
ok.setBackground(new Color(102,12,12));
ok.setForeground(new Color(255,255,255));
clr.setBackground(new Color(102,12,12));
clr.setForeground(new Color(255,255,255));

14. txta.setEditable(false);
ok.addActionListener(this);
clr.addActionListener(this);
ext.addActionListener(this);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
int srno;
double mno;
String name,city,address;
if(e.getSource()==ok)
{
txtsrno.setEditable(false);
txtname.setEditable(false);
txtcity.setEditable(false);
txtaddress.setEditable(false);
txtmno.setEditable(false);
srno=Integer.parseInt(txtsrno.getText());
name=txtname.getText();

15. city=txtcity.getText();
address=txtaddress.getText();
mno=Double.parseDouble(txtmno.getText());
txta.append("n");
txta.append(" Sr No.:: "+srno+"n Name:: "+name+"n
City:: "+city+"n Address:: "+address+"n Mobile No.::
"+mno);
else
if(e.getSource()==clr)
{
txtsrno.setEditable(true);
txtname.setEditable(true);
txtcity.setEditable(true);
txtaddress.setEditable(true);
txtmno.setEditable(true); txtsrno.setText("");
txtname.setText("");
txtcity.setText("");
txtaddress.setText("");

16. txta.setText("");
}
else
if(e.getSource()==ext)
{
System.exit(0);
}
}
public static void main(String s[])
{
details p=new details();
}
}

17. Topic Name::Concatinate String
import java.awt.*;
import java.awt.event.*;
class concate extends Frame implements ActionListener
{
Label lbl1,lbl2,lbl3;
TextField txt1,txt2,txt3;
Button btn1,btn2,btn3;
Panel p1,p2,p3,p4,p5;
public concate()

18. {
setSize(300,300);
lbl1=new Label("First Name");
lbl2=new Label("Last Name");
lbl3=new Label("Concatinate");
txt1=new TextField();
txt2=new TextField();
txt3=new TextField();
btn1=new Button("Concate");
btn2=new Button("Clear");
btn3=new Button("Exit");
p1=new Panel();
p2=new Panel();
p3=new Panel();
p4=new Panel();
p5=new Panel();
GridLayout g1=new GridLayout(1,2);
GridLayout g2=new GridLayout(1,2);
GridLayout g3=new GridLayout(1,2);
GridLayout g4=new GridLayout(1,3);
GridLayout g5=new GridLayout(4,4);
p1.setLayout(g1);
p2.setLayout(g2);
p3.setLayout(g3);
p4.setLayout(g4);
p5.setLayout(g5);
p1.add(lbl1); p1.add(txt1);

19. p2.add(lbl2); p2.add(txt2);
p3.add(lbl3); p3.add(txt3);
p4.add(btn1); p4.add(btn2);
p4.add(btn3);
p5.add(p1);
p5.add(p2);
p5.add(p3);
p5.add(p4);
add(p5);
Font f1=new Font("arial",1,20);
lbl1.setFont(f1);
lbl2.setFont(f1);
lbl3.setFont(f1);
txt1.setFont(f1);
txt2.setFont(f1);
txt3.setFont(f1);
btn1.setFont(f1);
btn2.setFont(f1);
btn3.setFont(f1);
lbl1.setBackground(new Color(24,93,27));
lbl1.setForeground(new Color(255,255,255));
lbl2.setBackground(new Color(24,93,27));

20. lbl2.setForeground(new Color(255,255,255));
lbl3.setBackground(new Color(24,93,27));
lbl3.setForeground(new Color(255,255,255));
btn1.setBackground(new Color(24,93,27));
btn1.setForeground(new Color(255,255,255));
btn2.setBackground(new Color(24,93,27));
btn2.setForeground(new Color(255,255,255));
btn3.setBackground(new Color(24,93,27));
btn3.setForeground(new Color(255,255,255));
btn1.addActionListener(this);
btn2.addActionListener(this);
btn3.addActionListener(this);
txt3.setEditable(false);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
String ent1,ent2;
ent1=(txt1.getText());

21. ent2=(txt2.getText());
if(e.getSource()==btn1)
{
txt3.setText((ent1+" "+ent2));
}
else
if(e.getSource()==btn2)
{
txt1.setText("");
txt2.setText("");
txt3.setText("");
}
else
if(e.getSource()==btn3)
{
System.exit(0);
}
}
public static void main(String []s)
{
concate p=new concate();
}
}

22. Topic Name::UpperLower Case
import java.awt.*;
import java.awt.event.*;
class upper extends Frame implements ActionListener
{
Label lbl1,lbl2,lbl3;
TextField txt1,txt2,txt3;
Button btn1,btn2,btn3;
Panel p1,p2,p3,p4,p5;
public upper()

23. {
setSize(300,300);
lbl1=new Label("Enter String");
lbl2=new Label("Upper Case");
lbl3=new Label("Lower Case");
txt1=new TextField();
txt2=new TextField();
txt3=new TextField();
btn1=new Button("Convert");
btn2=new Button("Clear");
btn3=new Button("Exit");
p1=new Panel();
p2=new Panel();
p3=new Panel();
p4=new Panel();
p5=new Panel();
GridLayout g1=new GridLayout(1,2);
GridLayout g2=new GridLayout(1,2);
GridLayout g3=new GridLayout(1,2);
GridLayout g4=new GridLayout(1,3);
GridLayout g5=new GridLayout(4,4);
p1.setLayout(g1);
p2.setLayout(g2);
p3.setLayout(g3);
p4.setLayout(g4);
p5.setLayout(g5);
p1.add(lbl1); p1.add(txt1);

24. p2.add(lbl2); p2.add(txt2);
p3.add(lbl3); p3.add(txt3);
p4.add(btn1); p4.add(btn2);
p4.add(btn3);
p5.add(p1);
p5.add(p2);
p5.add(p3);
p5.add(p4);
add(p5);
Font f1=new Font("arial",1,20);
lbl1.setFont(f1);
lbl2.setFont(f1);
lbl3.setFont(f1);
txt1.setFont(f1);
txt2.setFont(f1);
txt3.setFont(f1);
btn1.setFont(f1);
btn2.setFont(f1);
btn3.setFont(f1);
lbl1.setBackground(new Color(187,52,11));
lbl1.setForeground(new Color(255,255,255));

25. lbl2.setBackground(new Color(187,52,11));
lbl2.setForeground(new Color(255,255,255));
lbl3.setBackground(new Color(187,52,11));
lbl3.setForeground(new Color(255,255,255));
btn1.setBackground(new Color(187,52,11));
btn1.setForeground(new Color(255,255,255));
btn2.setBackground(new Color(187,52,11));
btn2.setForeground(new Color(255,255,255));
btn3.setBackground(new Color(187,52,11));
btn3.setForeground(new Color(255,255,255));
btn1.addActionListener(this);
btn2.addActionListener(this);
btn3.addActionListener(this);
txt2.setEditable(false);
txt3.setEditable(false);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
String ent;

26. ent=(txt1.getText());
if(e.getSource()==btn1)
{
txt1.setEditable(false);
txt2.setText(ent.toUpperCase());
txt3.setText(ent.toLowerCase());
}
else
if(e.getSource()==btn2)
{
txt1.setEditable(true);
txt1.setText("");
txt2.setText("");
txt3.setText("");
}
else
if(e.getSource()==btn3)
{
System.exit(0);
}
}
public static void main(String []s)
{
upper p=new upper();
}
}

27. Topic Name::Square & Double
import java.awt.*;
import java.awt.event.*;
class sqr extends Frame implements ActionListener
{
Label lbl1,lbl2,lbl3;
TextField txt1,txt2,txt3;
Button btn1,btn2,btn3;
Panel p1,p2,p3,p4,p5;
public sqr()

28. {
setSize(300,300);
lbl1=new Label("Enter No.");
lbl2=new Label("Square");
lbl3=new Label("Double");
txt1=new TextField();
txt2=new TextField();
txt3=new TextField();
btn1=new Button("Check");
btn2=new Button("Clear");
btn3=new Button("Exit");
p1=new Panel();
p2=new Panel();
p3=new Panel();
p4=new Panel();
p5=new Panel();
GridLayout g1=new GridLayout(1,2);
GridLayout g2=new GridLayout(1,2);
GridLayout g3=new GridLayout(1,2);
GridLayout g4=new GridLayout(1,3);
GridLayout g5=new GridLayout(4,4);
p1.setLayout(g1);
p2.setLayout(g2);
p3.setLayout(g3);
p4.setLayout(g4);
p5.setLayout(g5);
p1.add(lbl1); p1.add(txt1);

29. p2.add(lbl2); p2.add(txt2);
p3.add(lbl3); p3.add(txt3);
p4.add(btn1); p4.add(btn2);
p4.add(btn3);
p5.add(p1);
p5.add(p2);
p5.add(p3);
p5.add(p4);
add(p5);
Font f1=new Font("arial",1,20);
lbl1.setFont(f1);
lbl2.setFont(f1);
lbl3.setFont(f1);
txt1.setFont(f1);
txt2.setFont(f1);
txt3.setFont(f1);
btn1.setFont(f1);
btn2.setFont(f1);
btn3.setFont(f1);
lbl1.setBackground(new Color(77,20,114));
lbl1.setForeground(new Color(255,255,255));

30. lbl2.setBackground(new Color(77,20,114));
lbl2.setForeground(new Color(255,255,255));
lbl3.setBackground(new Color(77,20,114));
lbl3.setForeground(new Color(255,255,255));
btn1.setBackground(new Color(77,20,114));
btn1.setForeground(new Color(255,255,255));
btn2.setBackground(new Color(77,20,114));
btn2.setForeground(new Color(255,255,255));
btn3.setBackground(new Color(77,20,114));
btn3.setForeground(new Color(255,255,255));
btn1.addActionListener(this);
btn2.addActionListener(this);
btn3.addActionListener(this);
txt2.setEditable(false);
txt3.setEditable(false);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
int ent;

31. ent=Integer.parseInt(txt1.getText());
if(e.getSource()==btn1)
{
txt1.setEditable(false);
txt2.setText(""+ent*ent);
txt3.setText(""+ent*2);
}
else
if(e.getSource()==btn2)
{
txt1.setEditable(true);
txt1.setText("");
txt2.setText("");
txt3.setText("");
}
else
if(e.getSource()==btn3)
{
System.exit(0);
}
}
public static void main(String []s)
{
sqr p=new sqr();
}
}

32. Topic Name::Prime,Even,Odd
import java.awt.*;
import java.awt.event.*;
class prime extends Frame implements ActionListener
{
Label lbl1,lbl2,lbl3,lbl4;
TextField txt1,txt2,txt3,txt4;
Button btn1,btn2,btn3;
Panel p1,p2,p3,p4,p5,p6;
public prime()

33. {
setTitle("Prime");
setSize(500,300);
lbl1=new Label("Enter No.");
lbl2=new Label("Prime No.");
lbl3=new Label("Odd No.");
lbl4=new Label("Even No.");
txt1=new TextField();
txt2=new TextField();
txt3=new TextField();
txt4=new TextField();
btn1=new Button("Find..!");
btn2=new Button("Clear");
btn3=new Button("Exit");
p1=new Panel();
p2=new Panel();
p3=new Panel();
p4=new Panel();
p5=new Panel();
p6=new Panel();
GridLayout g1=new GridLayout(1,2);
GridLayout g2=new GridLayout(1,2);
GridLayout g3=new GridLayout(1,2);
GridLayout g4=new GridLayout(1,2);
GridLayout g5=new GridLayout(1,3);
GridLayout g6=new GridLayout(5,5);
p1=new Panel();

34. p1.setLayout(g1);
p2.setLayout(g2);
p3.setLayout(g3);
p4.setLayout(g4);
p5.setLayout(g5);
p6.setLayout(g6);
p1.add(lbl1); p1.add(txt1);
p2.add(lbl2); p2.add(txt2);
p3.add(lbl3); p3.add(txt3);
p4.add(lbl4); p4.add(txt4);
p5.add(btn1); p5.add(btn2);
p5.add(btn3);
p6.add(p1);
p6.add(p2);
p6.add(p3);
p6.add(p4);
p6.add(p5);
add(p6);
Font f1=new Font("arial",1,20);
lbl1.setFont(f1);
lbl2.setFont(f1);
lbl3.setFont(f1);
lbl4.setFont(f1);
txt1.setFont(f1);
txt2.setFont(f1);
txt3.setFont(f1);

35. lbl2.setBackground(new Color(112,15,26));
lbl2.setForeground(new Color(255,255,255));
lbl3.setBackground(new Color(112,15,26));
lbl3.setForeground(new Color(255,255,255));
lbl4.setBackground(new Color(112,15,26));
lbl4.setForeground(new Color(255,255,255));
btn1.setBackground(new Color(112,15,26));
btn1.setForeground(new Color(255,255,255));
btn2.setBackground(new Color(112,15,26));
btn2.setForeground(new Color(255,255,255));
btn3.setBackground(new Color(112,15,26));
btn3.setForeground(new Color(255,255,255));
btn1.addActionListener(this);
btn2.addActionListener(this);
btn3.addActionListener(this);
txt2.setEditable(false);
txt3.setEditable(false);
txt4.setEditable(false);
setVisible(true);
}

36. ent=Integer.parseInt(txt1.getText());
if(e.getSource()==btn1)
{
txt1.setEditable(false);
if(ent%2==0)
{
txt4.setText("Even");
txt2.setText("0");
txt3.setText("0");
}
else
if(ent%2==1){
for(i=3;i<=ent;n++)
{
c=c+(s1*2);
i=c;
if(i==ent)
{
txt4.setText("0");
txt2.setText("Prime");

37. txt3.setText("0");
}
else
if(ent%2==1){
for(i=3;i<=ent;n++)
{
c=c+(s1*2);
i=c;
if(i==ent)
{
txt4.setText("0");
txt2.setText("Prime");
txt3.setText("Odd");
}
}
}
else

38. txt4.setText("0");
txt2.setText("0");
txt3.setText("Odd");
}
}
else
if(e.getSource()==btn2)
{
txt1.setEditable(true);
txt1.setText("");
txt2.setText("");
txt3.setText("");
txt4.setText("");
}
else
if(e.getSource()==btn3)
{
System.exit(0);
}
}
public static void main(String []s)
{
prime p=new prime();
}
}

39. Topic Name::Operators
import java.awt.*;
import java.awt.event.*;
class operator extends Frame implements ActionListener
{
Label lbl1,lbl2,lbl3;
TextField txt1,txt2,txt3;
Button btn1,btn2,btn3,btn4,btn5,btn6,btn7;
Panel p1,p2,p3,p4,p5,p6;
public operator()

40. {
setSize(300,300);
lbl1=new Label("Enter 1st No.");
lbl2=new Label("Enter 2st No.");
lbl3=new Label("Result");
txt1=new TextField();
txt2=new TextField("0");
txt3=new TextField("0");
btn1=new Button("+");
btn2=new Button("-");
btn3=new Button("*");
btn4=new Button("/");
btn5=new Button("%");
btn6=new Button("Clear");
btn7=new Button("Exit");
p1=new Panel();
p2=new Panel();
p3=new Panel();
p4=new Panel();
p5=new Panel();
p6=new Panel();
GridLayout g1=new GridLayout(1,2);
GridLayout g2=new GridLayout(1,2);
GridLayout g3=new GridLayout(1,2);
GridLayout g4=new GridLayout(1,5);
GridLayout g5=new GridLayout(1,2);
GridLayout g6=new GridLayout(5,5);

41. p2.add(lbl2); p2.add(txt2);
p3.add(lbl3); p3.add(txt3);
p4.add(btn1); p4.add(btn2);
p4.add(btn3); p4.add(btn4); p4.add(btn5);
p5.add(btn6); p5.add(btn7);
p6.add(p1);
p6.add(p2);
p6.add(p3);
p6.add(p4);
p6.add(p5);
add(p6);
Font f1=new Font("arial",1,20);
lbl1.setFont(f1);
lbl2.setFont(f1);
lbl3.setFont(f1);
txt1.setFont(f1);
txt2.setFont(f1);
txt3.setFont(f1);
btn1.setFont(f1);
btn2.setFont(f1);
btn3.setFont(f1);
btn4.setFont(f1);
btn5.setFont(f1);
btn6.setFont(f1);

42. btn7.setFont(f1);
lbl1.setBackground(new Color(19,97,147));
lbl1.setForeground(new Color(255,255,255));
lbl2.setBackground(new Color(19,97,147));
lbl2.setForeground(new Color(255,255,255));
lbl3.setBackground(new Color(19,97,147));
lbl3.setForeground(new Color(255,255,255));
btn1.setBackground(new Color(19,97,147));
btn1.setForeground(new Color(255,255,255));
btn2.setBackground(new Color(19,97,147));
btn2.setForeground(new Color(255,255,255));
btn3.setBackground(new Color(19,97,147));
btn3.setForeground(new Color(255,255,255));
btn4.setBackground(new Color(19,97,147));
btn4.setForeground(new Color(255,255,255));
btn5.setBackground(new Color(19,97,147));
btn5.setForeground(new Color(255,255,255));
btn6.setBackground(new Color(19,97,147));

43. btn6.setForeground(new Color(255,255,255));
btn7.setBackground(new Color(19,97,147));
btn7.setForeground(new Color(255,255,255));
btn1.addActionListener(this);
btn2.addActionListener(this);
btn3.addActionListener(this);
btn4.addActionListener(this);
btn5.addActionListener(this);
btn6.addActionListener(this);
btn7.addActionListener(this);
txt3.setEditable(false);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
int ent1,ent2;
ent1=Integer.parseInt(txt1.getText());
ent2=Integer.parseInt(txt2.getText());
if(e.getSource()==btn1)
{
txt1.setEditable(false);
txt2.setEditable(false);
txt3.setEditable(false);
txt3.setText(""+(ent1+ent2));
}

44. else
if(e.getSource()==btn2)
{
txt1.setEditable(false);
txt2.setEditable(false);
txt3.setEditable(false);
txt3.setText(""+(ent1-
ent2));
}
else
if(e.getSource()==btn3)
{
txt1.setEditable(false);
txt2.setEditable(false);
txt3.setEditable(false);
txt3.setText(""+ent1*ent2);
}
else
if(e.getSource()==btn4)
{
txt1.setEditable(false);
txt2.setEditable(false);
txt3.setEditable(false);
txt3.setText(""+ent1/ent2);
}

45. if(e.getSource()==btn5)
{
txt1.setEditable(false);
txt2.setEditable(false);
txt3.setEditable(false);
txt3.setText(""+ent1%ent2);
}
else
if(e.getSource()==btn6)
{
txt1.setEditable(true);
txt2.setEditable(true);
txt3.setEditable(false);
txt3.setText("0");
txt2.setText("0");
txt1.setText("");
}
else
if(e.getSource()==btn7)
{
System.exit(0);
}
}

46. public static void main(String []s)
{
operator p=new operator();
}
}