Slip:-1
Q1.
Write a java program to read the characters from a file, if a character is
alphabet then reverse its case, if not then display its category on the Screen.
(whether it is Digit or Space)
import
java.io.*;
class
slip1
{
public
static void main(String args[])throws Exception
{
BufferedReader
br=new BufferedReader(new InputStreamReader(System.in));
FileReader
fr=new FileReader("f1.txt");
int
ch;
while((ch=fr.read())!=-1)
{
char
c=(char)ch;
if(Character.isSpaceChar(c))
{
System.out.println("Entered
Character Is Space");
}
if(Character.isDigit(c))
{
System.out.println("Entered
Character is Digit");
}
2
if(Character.isLetter(c))
{
System.out.println("Entered
Character is Alphabet"); if(Character.isLowerCase(c))
{
c=Character.toUpperCase(c);
System.out.println("After
Changing the Case " + c);
}
else
{
c=Character.toLowerCase(c);
System.out.println("After Changing the Case " + c);
}
}
}
fr.close();
}
}
f1.txt
v
2
Output:-
C:\Program
Files\Java\jdk1.6.0_20\bin>javac slip1.java C:\Program
Files\Java\jdk1.6.0_20\bin>java slip3
Entered Character is Alphabet
After
Changing the Case V
Entered
Character Is Space
Entered
Character is Digit 4
Slip:-2
Q2.
Write a java program to accept n names of cites from user and display them in
descending order.
import
java.io.*;
class
sl2
{
public
static void main(String args[ ])throws IOException
{
BufferedReader
br=new BufferedReader(new InputStreamReader(System.in));
System.out.println("how many no of cities you want to enter?");
int
n=Integer.parseInt(br.readLine( ));
String
str[ ]=new String[n];
int
i,j;
for(i=0;i<n;i++)
{
System.out.println("enter
city names:-"); str[i]=br.readLine( ); }
for(i=0;i<n;i++)
{
for(j=i+1;j<n;j++)
{
if((str[i].compareTo(str[j]))<0)
{
5
String tmp=str[i];
str[i]=str[j];
str[j]=tmp;
}
}
}
System.out.println("after
sorting:-");
for(i=0;i<n;i++)
{
System.out.println(str[i]);
}
}
}
Output:-
C:\Program
Files\Java\jdk1.6.0_20\bin>javac sl2.java
C:\Program
Files\Java\jdk1.6.0_20\bin>java sl2 6
how many no of cities you want to enter?
3
enter
city names:-
pune
enter
city names:-
mumbai
enter
city names:-
chennai
after
sorting:-
pune
mumbai
chennai
7
Slip:-3
Q3.Write
a java program to accept the details of „n‟employees
(EName ,Salary) from the user, store them into the Hashtable and displaysthe
Employee Names having maximum Salary.
import
java.io.*;
import
java.util.*;
class
sl3
{
public
static void main(String args[ ])throws IOException
{
BufferedReader
br=new BufferedReader(new InputStreamReader(System.in)); Hashtable
<String,Integer>h=new Hashtable<String,Integer>( );
String
name=" ";
int
sal=0;
System.out.println("how
many no.of employees you want to enter:-"); int
n=Integer.parseInt(br.readLine( ));
for(int
i=1;i<=n;i++)
{
System.out.println("enter
name and salary:-");
name=br.readLine(
);
sal=Integer.parseInt(br.readLine(
));
h.put(name,sal);
8
}
Enumeration
v=h.elements( );
Enumeration
k=h.keys( );
while(k.hasMoreElements(
))
{
System.out.println(k.nextElement(
)+" "+v.nextElement( ));
}
v=h.elements(
);
k=h.keys(
);
String
str=" ";
int
max=0;
while(v.hasMoreElements(
))
{
name=(String)k.nextElement(
);
sal=(Integer)v.nextElement(
);
if(sal>max)
{
max=sal;
str=name;
}
}
System.out.println(str+"has
maximum salary"+max);
}
}
9
Output:-
C:\Program
Files\Java\jdk1.6.0_20\bin>javac sl3.java
C:\Program
Files\Java\jdk1.6.0_20\bin>java sl3 how many no.of employees you want to
enter:-2
enter
name and salary:-
Neha
34000
enter
name and salary:-
Hema
90000
Neha
34000
Hema
90000
Hema
has maximum salary9000010
Slip:-4
Q4.
Design a screen in Java to handle the Mouse Events such as MOUSE_MOVED and
MOUSE_CLICK and display the position of the Mouse_Click in a TextField.
import
java.awt.* ;
import
java.awt.event.*;
class
slip4 extends Frame
{
TextField
statusBar;
public
static void main(String [ ]args)
{
new
slip4( ).show( );
}
slip4(
)
{
addMouseListener(new
MouseAdapter( )
{
public
void mouseClicked(MouseEvent e)
{
statusBar.setText("clicked
at (" + e.getX( ) + " , " + e.getY( ) + ")"); repaint(
);
}
11
public void mouseEntered(MouseEvent me)
{
statusBar.setText("clicked
at (" + me.getX( ) + " , " + me.getY( ) + ")");
repaint( );
}
});
addWindowListener(new
WindowAdapter( )
{
public
void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
setLayout(new
FlowLayout( ));
setSize(275,300);
setTitle("mouse
click position");
statusBar=new
TextField(20);
add(statusBar);
setVisible(true);
}
12
}
Slip:-5
Q5.
Define a class Student with attributes rollno and name. Define default and
parameterized constructor. Override the toString() method. Keep the count of
Objects created. Create objects using parameterized constructor and Display the
object count after each object is created.
import
java.io.*;
class
student
{
int
rollno;
static
int n;
String
name;
student()
{
}
student(int
rollno,String name)
{
n=n+1;
this.rollno=rollno;
this.name=name;
}
public
String toString()
{
return
rollno+" "+name; 13
}
public
static void main(String args[])
{
student
s1=new student(101,"yogesh"); student s2=new
student(102,"ubale"); System.out.println(s1); System.out.println(s2);
System.out.println("object is created:-"+n);
}
}
Output:-
C:\Program
Files\Java\jdk1.6.0_20\bin>javac student.java
C:\Program
Files\Java\jdk1.6.0_20\bin>java student
1
neha
2
megha object2
14
Slip:-7
Q7.
Write a java program to display “Hello Java”with settings
Font-Georgia, Foreground color- Red, background color –Blue on the
Frame (Use Label)
import
java.awt.*;
class
slip7 extends Frame
{
Label
l;
slip7(
)
{
l=new
Label("Hello Java");
l.setFont(new
Font("Georgia",Font.BOLD,14)); l.setForeground(Color.RED);
add(l);
setBackground(Color.BLUE);
setSize(300,300);
setLayout(new
FlowLayout( ));
setVisible(true);
}
public
static void main(String a[ ])
{
new
slip7( );
}
}
15
Output: 16
Slip:-8
Q8.
Write a java program to design a following GUI (Use Swing).
import
java.awt.*;
import
javax.swing.*;
class
slip8 extends JFrame
{
JLabel
l1,l2,l3,l4,l5,l6;
JTextField
t1,t2,t3;
JTextArea
t;
JPanel
p,p1,p2,p3;
ButtonGroup
bg;
JRadioButton
m,f; 17
JCheckBox c1,c2,c3;
JButton
b1,b2;
slip8(
)
{
p=new
JPanel( );
p1=new
JPanel( );
l1=new
JLabel("First Name");
l2=new
JLabel("Last Name");
l3=new
JLabel("Address");
l4=new
JLabel("Mobile Number");
t1=new
JTextField(10);
t2=new
JTextField(10);
t3=new
JTextField(10);
t=new
JTextArea(2,10);
p.add(l1);
p.add(t1);
p.add(l2);
p.add(t2);
p.add(l3);
p.add(t);
p.add(l4);
p.add(t3);
p.setLayout
(new GridLayout(4,2));
l5=new
JLabel("Gender"); 18
m=new JRadioButton("male");
f=new
JRadioButton("female");
bg=new
ButtonGroup( );
bg.add(m);
bg.add(f);
p1.add(l5);
p1.add(m);
p1.add(f);
p1.setLayout(new
GridLayout(1,3));
p2=new
JPanel( );
l6=new
JLabel("your interest");
c1=new
JCheckBox("computer");
c2=new
JCheckBox("sports");
c3=new
JCheckBox("music");
p2.add(l6);
p2.add(c1);
p2.add(c2);
p2.add(c3);
p2.setLayout(new
GridLayout(1,4));
p3=new
JPanel( );
b1=new
JButton("submit");
b2=new
JButton("clear");
p3.add(b1);
p3.add(b2);
19
add(p);
add(p1);
add(p2);
add(p3);
setSize(300,400);
setLayout
(new FlowLayout(FlowLayout.LEFT)); setVisible(true);
setDefaultCloseOperation(
JFrame.EXIT_ON_CLOSE);
}
public
static void main(String a[ ])
{
new
slip8( );
}
}
20
Slip:-9
Q9.
Write a java program to display the contents of a file in reverse order.
import
java.io.*;
class
example
{
public
static void main(String[] args)throws IOException
{
FileReader
fr=new FileReader("input.txt");
FileWriter
fw=new FileWriter("output.txt");
BufferedReader
b=new BufferedReader(fr);
String
data;
String
reverse;
while((data=b.readLine())!=null)
{
String[]words=data.split("
");
for(String
a:words)
{
21
StringBuilder builder=new
StringBuilder(a);
System.out.println(builder.reverse().toString());
}
}
}
}
Output:-
C:\Program
Files\Java\jdk1.6.0_20\bin>javac example.java
C:\Program
Files\Java\jdk1.6.0_20\bin>java example ih
woh
era
uoy
22
Slip:-10
Q10.
Write an applet application in Java for designing Temple.
import
java.awt.*;
import
java.applet.*;
public
class slip10 extends Applet
{
public
void paint(Graphics g)
{
g.drawRect(200,200,250,150);
g.drawRect(330,9,20,15);
g.drawRect(311,305,20,44);
g.drawLine(451,199,326,63);
g.drawLine(198,200,325,65);
g.drawLine(326,62,331,10);
}
}
23
HTML code
<html>
<head>
<title> ex</title>
</head>
<body>
<applet
code="slip10.class" height="500"
width="500"></applet>
</body>
</html>
OutPut: 24
Slip:- 12
Q1) Write a java program to accept list of file
names through command line and delete the files having extension “.txt”.
Display the details of remaining files such as FileName and size
import java.io.*;
class slip12
{
public static void main(String args[ ])throws
Exception
{
for(int i=0;i<3;i++)
{
File file=new File(args[i]);
if(file.isFile( ))
{
String name=file.getName( );
if(name.endsWith(".txt"))
{
file.delete( );
System.out.println("file is deleted"
+file);
}
else
{
System.out.println(name +"
"+file.length( )+"bytes");
}
}
else
{
System.out.println(args[i] +"is not a
file");
}
}
}
}
Output:
C:\Program Files\Java\jdk1.6.0_20\bin>javac
slip12.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
slip12 abc.txt
file is deletedabc.txt 25
Slip:-13
Q13) Write a java program to copy the contents of
one file into the another file, while copying change the case of alphabets and
replace all the digits by ‘*’ in target file.
import java.util.*;
import java.io.*;
class Slip13
{
public static void main(String a[]) throws
Exception
{
BufferedReader br=new BufferedReader(new
InputStreamReader(System.in));
System.out.println("enter file name to
copy");
String f1=br.readLine();
System.out.println("enter destination
file");
String f2=br.readLine();
FileReader fr=new FileReader(f1);
FileWriter fw=new FileWriter(f2);
int ch;
while((ch=fr.read() ) != -1)
{
char ch1=(char)ch;
if(Character.isUpperCase(ch1))
{
ch1=Character.toLowerCase(ch1);
fw.write(ch1);
}
else if(Character.isLowerCase(ch1))
{
ch1=Character.toUpperCase(ch1);
fw.write(ch1);
}
else if(Character.isDigit(ch1))
{
ch1='*'; 26
fw.write(ch1);
}
else if(Character.isSpace(ch1))
{
fw.write(ch1);
}
}
fr.close();
fw.close();
}
}
OUTPUT:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
Slip13.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
Slip13
C:\Program Files\Java\jdk1.6.0_20\bin>java
Slip13
enter file name to copy
f1
enter destination file
f2 27
Slip:-14
Q.14) Write a Java program which will create a
frame if we try to close it, it should change it’s color and it remains visible
on the screen(Use swing). [Marks 30]
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Slip14 extends JFrame
{
JPanel p = new JPanel();
Slip14()
{ setVisible(true);
setSize(400,400);
setTitle("Swing Background");
add(p);
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{ p.setBackground(Color.RED);
JOptionPane.showMessageDialog(null,"Close
window","Login",JOptionPane.INFORMATION_MESSAGE);
}
});
}
public static void main(String args[])
{
new Slip14();
}
}
OUTPUT:- 28
29
Slip:- 15
Q15). Define an abstract class Shape with
abstract methods area() and volume(). Write a java program to calculate area
and volume of Cone and Cylinder. [Marks 30]
import java.util.*;
abstract class Shape
{
abstract public void area();
abstract public void vol();
}
class Cone extends Shape
{
int r,s,h;
Cone(int r,int s,int h)
{
this.r=r;
this.s=s;
this.h=h;
}
public void area()
{
System.out.println("Area of Cone =
"+(3.14*r*s));
}
public void vol()
{
System.out.println("volume of Cone =
"+(3.14*r*r*h)/3);
}
}
class Cylinder extends Shape
{ int r,h;
Cylinder(int r,int h)
{ this.r=r;
this.h=h;
}
public void area()
{ System.out.println("Area of Cylinder =
"+(2*3.14*r*h)); 30
}
public void vol()
{
System.out.println("volume of Cylinder =
"+(3.14*r*r*h));
}
}
class Slip15
{ public static void main(String a[])
{ Scanner sc = new Scanner(System.in);
System.out.println("Enter radius, side and
height for cone");
int r =sc.nextInt();
int s1 =sc.nextInt();
int h =sc.nextInt();
Shape s;
s=new Cone(r,s1,h);
s.area();
s.vol();
System.out.println("Enter radius, height for
cylinder");
r =sc.nextInt();
h =sc.nextInt();
s=new Cylinder(r,h);
s.area();
s.vol();
}
}
OUTPUT:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
Slip15.java
C:\Program Files\Java\jdk1.6.0_20\bin>java Slip15
Enter radius, side and height for cone
5 8 6
Area of Cone = 125.60000000000001
volume of Cone = 157.0
Enter radius, height for cylinder
5 6 9
Area of Cylinder = 188.4
volume of Cylinder = 471.0 31
Slip :-16
Q.16)Write an application in Java using Awt to
display 4 X 4 squares on the screen. One of the block will be active with black
color. All other blocks should be filled with blue color. Provide command
buttons as follows to move the active cell. The active cell should be changed
only if it is within the boundary of the squares otherwise give the beep.
importjava.awt.*;
importjavax.swing.*;
importjava.applet.*;
importjava.awt.event.*;
public class Demo1 extends JFrame implements
ActionListener
{
staticintptr=1;
JButtonB[];
Container pane=getContentPane();
Demo1()
{
int b=1;
JPaneljp=new JPanel();
JPanel j1=new JPanel();
pane.setLayout(new BorderLayout());
jp.setLayout(new GridLayout(4,4));
jp.setFont(new
Font("SansSerif",Font.BOLD,10));
pane.setBackground(Color.gray);
jp.setBackground(Color.gray);
j1.setBackground(Color.gray);
B=new JButton[20];
for(int i=1;i<=16;i++)
{
B[i]=new JButton(""+i);
B[i].setBackground(Color.blue);
B[i].setForeground(Color.white); 32
jp.add(B[i]);
b++;
}
pane.add(jp,BorderLayout.CENTER);
pane.setLayout(new FlowLayout());
JButton B1=new JButton("UP");
B1.setBackground(Color.yellow);
B1.addActionListener(this);
JButton B2=new JButton("RIGHT");
B2.setBackground(Color.yellow);
B2.addActionListener(this);
JButton B3=new JButton("DOWN");
B3.setBackground(Color.yellow);
B3.addActionListener(this);
JButton B4=new JButton("LEFT");
B4.setBackground(Color.yellow);
B4.addActionListener(this);
j1.add(B1);
j1.add(B2);
j1.add(B3);
j1.add(B4);
pane.add(j1,BorderLayout.SOUTH);
}
// HANDLING EVENTS
public static void main(String a[])
{
Demo1 d = new Demo1();
d.setSize(300,200);
d.setTitle("Button Demo");
d.show();
d.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void actionPerformed(ActionEventae)
{
String str=(String)ae.getActionCommand(); 33
for(int
i=1;i<=16;i++)
{
B[i].setBackground(Color.blue);
B[i].setForeground(Color.white);
B[ptr].setBackground(Color.black);
}
try
{
if(str.equals("LEFT"))
{
if(ptr>0)
{
B[ptr].setBackground(Color.black);
ptr--;
}
else
JOptionPane.showMessageDialog(pane,"Out Of
Range!...");
//repaint();
}
if(str.equals("RIGHT"))
{
if(ptr>0)
{
B[ptr].setBackground(Color.black);
ptr++;
}
else
JOptionPane.showMessageDialog(pane,"Out Of
Range!...");
// repaint();
}
if(str.equals("UP"))
{
if(ptr>0)
{
B[ptr].setBackground(Color.black);
ptr-=4; 34
}
else
JOptionPane.showMessageDialog(pane,"Out Of
Range!...");
// repaint();
}
if(str.equals("DOWN"))
{
if(ptr>0)
{
B[ptr].setBackground(Color.black);
ptr+=4;
}
else
JOptionPane.showMessageDialog(pane,"Out Of
Range!...");
// repaint();
}
}
catch(Exception e)
{
JOptionPane.showMessageDialog(pane,"Out Of
Range!...");
}
}
} 35
OUTPUT:- 36
Slip :-17
Q.17)Write a Java program to design a screen
using Awt that will take a user name and password. If the user name and
password are not same, raise an Exception with appropriate message. User can
have 3 login chances only. Use clear button to clear the TextFields. [Marks 30]
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class InvalidPasswordException extends Exception
{}
class Slip17 extends JFrame implements
ActionListener
{
JLabel name, pass;
JTextField nameText;
JPasswordField passText;
JButton login, end;
static int cnt=0;
Slip17()
{
name = new JLabel("Name : ");
pass = new JLabel("Password : ");
nameText = new JTextField(20);
passText = new JPasswordField(20);
login = new JButton("Login");
end = new JButton("End");
login.addActionListener(this);
end.addActionListener(this);
setLayout(new GridLayout(3,2));
add(name);
add(nameText); 37
add(pass);
add(passText);
add(login);
add(end);
setTitle("Login Check");
setSize(300,300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==end)
{
System.exit(0);
}
if(e.getSource()==login)
{
try
{
String user = nameText.getText();
String pass = new String(passText.getPassword());
if(user.compareTo(pass)==0)
{ JOptionPane.showMessageDialog(null,"Login
Successful","Login",JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
}
else
{
throw new InvalidPasswordException();
}
}
catch(Exception e1)
{
cnt++; 38
JOptionPane.showMessageDialog(null,"Login
Failed","Login",JOptionPane.ERROR_MESSAGE);
nameText.setText("");
passText.setText("");
nameText.requestFocus();
if(cnt == 3)
{
JOptionPane.showMessageDialog(null,"3
Attempts Over","Login",JOptionPane.ERROR_MESSAGE);
System.exit(0);
}
}
}
}
public static void main(String args[])
{
new Slip17();
}
}
OUTPUT: 39
40
Slip:-18
Q18) Write a java program that displays the
number of characters, lines & words from a file.
import java.io.*;
class slipno18
{
public static void main(String args[])throws
Exception
{
int ccnt=0,lcnt=1,wcnt=0,c;
FileInputStream fin=new
FileInputStream("abc.txt");
while((c=fin.read())!=-1)
{
ccnt++;
if(c==32||c==13)
wcnt++;
if(c==1)
lcnt++;
}
System.out.println("Number of Character
are"+ccnt);
System.out.println("Number of words
are"+wcnt);
System.out.println("Number of line
are"+lcnt);
}
}
OUTPUT:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
slipno18.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
slipno18
Number of Character are19
Number of words are2
Number of line are1 41
Slip:-19
Q.19) Write a java program to accept a number
from the user, if number is zero then throw user defined Exception “Number is
0” otherwise calculate the sum of first and last digit of a given number (Use
static keyword). [Marks 30]
import java.io.*;
class NumberZero extends Exception
{
NumberZero( )
{ }
}
class Number
{
static int no;
Number( ) throws IOException
{
BufferedReader br=new BufferedReader(new
InputStreamReader(System.in));
System.out.println("enter number:");
no=Integer.parseInt(br.readLine( ));
try
{
if(no==0)
{
throw new NumberZero( );
}
cal( );
}
catch(NumberZero e)
{
System.out.println(" number is zero:");
}
}
void cal( )
{
int l=0,r=0;
l=no%10; 42
System.out.println("
number="+no);
if(no>9)
{
while(no>0)
{
r=no%10;
no=no/10;
}
System.out.println("addition of first and
last digit="+(l+r));
}
else
System.out.println(" addition of first and
last digit="+l);
}
}
class slip19
{
public static void main(String a[ ])throws
IOException
{
Number n=new Number();
}
}
Output:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
slip19.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
slip19
enter number:
15
number=15
addition of first and last digit=6 43
Slip :-20
Q.20)Write a package for Games in Java, which
have two classes Indoor and Outdoor. Use a function display () to generate the
list of players for the specific games. (Use Parameterized constructor,
finalize() method and Array Of Objects) [Marks 30]
import games.*;
class test
{
public static void main(String args[])
{
indoor d[]=new indoor[3];
for(int i=0;i<3;i++)
{
d[0]=new indoor(98,"PP");
d[1]=new indoor(87,"L");
}
System.out.println("FOR INDOOR GAMES");
System.out.println(" ");
for(int i=0;i<2;i++)
{d[i].disp();}
outdoor dq[]=new outdoor[2];
for(int i=0;i<2;i++)
{
dq[0]=new outdoor(98,"PP");
dq[1]=new outdoor(87,"L");
}
System.out.println("FOR OUTDOOR
GAMES");
System.out.println(" ");
for(int i=0;i<2;i++)
{dq[i].disp();}
}
}
package games;
public class indoor 44
{int code;
String name;
public indoor(int a,String b)
{code=a;
name=b;
}
public void disp()
{
System.out.println("CODE OF GAME==
"+code);
System.out.println("NAME OF
PLAYER=="+name);
}
}
package games;
public class outdoor
{int code;
String name;
public outdoor(int a,String b)
{code=a;
name=b;
}
public void disp()
{
System.out.println("CODE OF
GAME"+code);
System.out.println("NAME OF
PLAYER"+name);
}
} 45
Output:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
test11.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
test11
FOR INDOOR GAMES
CODE OF GAME== 98
NAME OF PLAYER==PP
CODE OF GAME== 87
NAME OF PLAYER== L
FOR OUTDOOR GAMES
CODE OF GAME 98
NAME OF PLAYER PP
CODE OF GAME 87
NAME OF PLAYER L 46
Slip:-22
Q. Define an Interface Shape with abstract method
area(). Write a java program to calculate an area of Circle and Sphere.(use
final keyword)
PROGRAMM:-
import java.io.*;
interface Shape
{
float pi=3.14f;
void area();
}
class Circle implements Shape
{ int r;
Circle(int r)
{
this.r = r;
}
public void area()
{
System.out.println("Area of Circle =
"+(pi*r*r));
}
}
class Sphere implements Shape
{ int r;
Sphere(int r)
{ this.r = r;
}
public void area()
{ System.out.println("Area of Sphere =
"+(4*pi*r*r));
}
}
class Slip22
{
public static void main(String a[]) throws
IOException
{ 47
BufferedReader br =
new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter radius for circle
: ");
int r =Integer.parseInt(br.readLine());
Shape s;
s=new Circle(r);
s.area();
System.out.println("Enter radius for sphere
: ");
r =Integer.parseInt(br.readLine());
s=new Sphere(r);
s.area();
}
}
OUTPUT: -
C:\Program Files\Java\jdk1.6.0_20\bin>javac
Slip22.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
Slip22
Enter radius for circle :
5
Area of Circle = 78.5
Enter radius for sphere :
8
Area of Sphere = 803.84
C:\Program Files\Java\jdk1.6.0_20\bin> 48
Slip:- .23
Q. Write a java program to accept the details of
n Cricket Players from user (Player code, name, runs, innings- played and
number of times not out). The program should contain following menus
-Display average runs of a single player.
-Display average runs of all players. (Use array
of objects, Method overloading and static keyword)
PROGRAMM:-
import java.io.*;
class Player
{
String Name;
int TotalRuns, TimesNotOut, InningsPlayed,pcode;
float Avg;
static BufferedReader br = new BufferedReader(new
InputStreamReader(System.in));
void getData()
{
try
{
System.out.println("Enter Player Code:
");
pcode=Integer.parseInt(br.readLine());
System.out.println("Enter Player Name:
");
Name = br.readLine();
System.out.println("Enter Total Runs:
");
TotalRuns = Integer.parseInt(br.readLine());
System.out.println("Enter Times Not Out:
");
TimesNotOut = Integer.parseInt(br.readLine());
System.out.println("Enter Innings Played:
");
InningsPlayed = Integer.parseInt(br.readLine());
}
catch(Exception e)
{
System.out.println(e);
}
}
void putData() 49
{
System.out.println(pcode + "\t"+
Name+"\t"+TotalRuns+"\t"+TimesNotOut+"\t"+InningsPlayed+"\t"+Avg);
}
void getAvg()
{
Avg= TotalRuns / (InningsPlayed - TimesNotOut);
}
static void getAvg(Player p[],int n)
{
for (int i=0;i<n;i++)
{
p[i].Avg=p[i].TotalRuns / (p[i].InningsPlayed -
p[i].TimesNotOut);
}
for (int i=0;i<n;i++)
{
p[i].putData();
}
}
}
public class slipno23
{
static BufferedReader br = new BufferedReader(new
InputStreamReader(System.in));
public static void main(String args[])
{
try
{
System.out.println("Enter No.of Players:
");
int n = Integer.parseInt(br.readLine());
Player p[] = new Player[n];
for(int i=0; i<n; i++)
{
p[i] = new Player();
p[i].getData();
}
System.out.println("Player Code For Avg
Calculation");
int m=Integer.parseInt(br.readLine());
for(int i=0; i<n; i++) 50
{
if(p[i].pcode==m)
{
p[i].getAvg();
p[i].putData();
}
}
System.out.println("Average Of All The
Players");
Player.getAvg(p,n);
}
catch(Exception e)
{
System.out.println(e);
}
}
}
OUTPUT: -
C:\Program Files\Java\jdk1.6.0_20\bin>javac
slipno23.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
slipno23
Enter No.of Players:
2
Enter Player Code:
8
Enter Player Name:
sachin tendulkar
Enter Total Runs:
760
Enter Times Not Out:
5
Enter Innings Played:
12
Enter Player Code:
9
Enter Player Name:
saurav Ganguly
Enter Total Runs:
709 51
Enter Times Not
Out:
7
Enter Innings Played:
10
Player Code For Avg Calculation
8
8 sachin tendulkar 760 5 12 108.0
Average Of All The Players
8 sachin tendulkar 760 5 12 108.0
9 saurav Ganguly 709 7 10 236.0
C:\Program Files\Java\jdk1.6.0_20\bin> 52
Slip :-24
Q.24) Write a Java Program to accept the details
of Employee(Eno, EName,Sal) from the user and display it on the next Frame.
(Use AWT)
import java.awt.*;
import java.awt.event.*;
class Slip24 extends Frame implements
ActionListener
{
Label l1,l2,l3,l;
TextField txt1,txt2,txt3;
Button submit,clear;
Panel p1;
Slip24()
{
l=new Label("EMPLOYEE INFORMTION");
l1=new Label("Name ");
l2=new Label("Address ");
l3=new Label("Salary ");
txt1=new TextField(20);
txt2=new TextField(20);
txt3=new TextField(20);
submit=new Button("submit");
submit.addActionListener(this);
clear=new Button("Clear");
clear.addActionListener(this);
p1=new Panel();
//p1.setLayout(new GridLayout(6,2));
p1.add(l1);
p1.add(txt1);
p1.add(l2);
p1.add(txt2); 53
p1.add(l3);
p1.add(txt3);
p1.add(submit);
p1.add(clear);
add(p1);
setVisible(true);
setSize(400,400);
}
public void actionPerformed(ActionEvent ae)
{
if(ae.getSource()==submit)
{
new
Employee_Detail(txt1.getText(),txt2.getText(),txt3.getText());
}
if(ae.getSource()==clear)
{
txt1.setText("");
txt2.setText("");
txt3.setText("");
}
}
public static void main(String args[])
{
new Slip24();
}
} 54
Slip:-.25
Q.25) Define an Employee class with suitable
attributes having getSalary() method, which returns salary withdrawn by a
particular employee. Write a class Manager which extends a class Employee,
override the getSalary() method, which will return salary of manager by adding
traveling allowance, house allowance etc.
import java.io.*;
class employee
{
int id=2;
String name="PAYAL";
int basic_salary=23000;
int w=24000;
void getsalary()
{
System.out.println("salary to be
wITHDRAWN="+w);
}
}
class manager extends employee
{
int sal;
int da=1200;
int hra=1200;
int ta=1200;
void getsalary()
{
sal=(basic_salary+da+hra+ta);
System.out.println("EMPLOYEE DETAILS");
System.out.println("EMPLOYEE CODE=
"+id);
System.out.println("EMPLOYEE NAME=
"+name);
System.out.println("EMPLOYEE GROSS SALARY=
"+sal);
}
}
class slipno25
{
public static void main(String s[])
{ 55
employee e=new
employee();
e.getsalary();
manager m=new manager();
m.getsalary();
}
}
OUTPUT:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
slipno25.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
slipno25
salary to be wITHDRAWN=24000
EMPLOYEE DETAILS
EMPLOYEE CODE= 2
EMPLOYEE NAME= PAYAL
EMPLOYEE GROSS SALARY= 26600 56
Slip:-26
Q. Write a java Program to accept ‘n’ no’s
through the command line and store all the prime no’s and perfect no’s into the
different arrays and display both the arrays.
PROGRAMM:-
import java.io.*;
class slipno26
{
public static void main(String s[])
{
int sum[]=new int[20];
int i;
System.out.println("ELEMENTS OF ARRAY
ARE:");
for(i=0;i<s.length;i++)
{
sum[i]=Integer.parseInt(s[i]);
System.out.println(sum[i]);
}
int prime[]=new int[20];
System.out.println("ELEMENTS OF ARRAY OF
PRIME NUMBER ARE:");
for(i=0;i<s.length;i++)
{
if(sum[i]%2==0)
{
prime[i]=sum[i];
System.out.println(prime[i]);}
}
int p[]=new int[20];
System.out.println("ELEMENTS OF ARRAY OF
PERFECT NUMBER ARE:");
for(i=0;i<s.length;i++)
{
int b=1,s1=0;
while(b<sum[i])
{
if(sum[i]%b==0)
{
s1=s1+b;
} 57
b++;
}
if(s1==sum[i])
{
p[i]=sum[i];
System.out.println(p[i]);
}
}
}
}
Output:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
sl26.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
sl26
ELEMENTS OF ARRAY ARE:
ELEMENTS OF ARRAY OF PRIME NUMBER ARE:
ELEMENTS OF ARRAY OF PERFECT NUMBER ARE:
C:\Program Files\Java\jdk1.6.0_20\bin>java
sl26 3 4 5 6 7
ELEMENTS OF ARRAY ARE:
3
4
5
6
7
ELEMENTS OF ARRAY OF PRIME NUMBER ARE:
4
6
ELEMENTS OF ARRAY OF PERFECT NUMBER ARE:
6 58
Slip:-28
Q.28) Write a java program to read n Students
names from user, store them into the ArrayList collection. The program should
not allow duplicate names. Display the names in Ascending order.
PROGRAMM:-
import java.util.*;
import java.io.*;
import java.lang.*;
class slipno28
{
public static void main(String si[])throws IOException
{
BufferedReader b=new BufferedReader(new
InputStreamReader(System.in));
System.out.print("ENTER NUMBER OF RECORDS
YOU WANT RO ENTER");
int n=Integer.parseInt(b.readLine());
String e[]=new String[n];
for(int i=0;i<n;i++)
{
System.out.print("ENTER NAME OF
STUDENT=");
e[i]=b.readLine();
}
ArrayList<String> a1=new
ArrayList<String>();
for(int i=0;i<n;i++)
{
a1.add(e[i]);
System.out.println(a1);
}
System.out.println("STUDENT NAMES BEFORE
SORTING ARE AS FOLLOWS");
System.out.println(" ");
System.out.println(a1);
System.out.println(" ");
SortedSet<String> d=new
TreeSet<String>();
for(int i=0;i<n;i++)
{
d.add(e[i]);
Iterator iw=d.iterator(); 59
System.out.println("STUDENT
NAMES AFTER SORTING ARE AS FOLLOWS");
while(iw.hasNext())
{
Object element=iw.next();
System.out.println(element.toString());
}
}
}
}
OUTPUT:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
slipno28.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
slipno28
ENTER NUMBER OF RECORDS YOU WANT RO ENTER2
ENTER NAME OF STUDENT=sachin
ENTER NAME OF STUDENT=rahul
[sachin]
[sachin, rahul]
STUDENT NAMES BEFORE SORTING ARE AS FOLLOWS
[sachin, rahul]
STUDENT NAMES AFTER SORTING ARE AS FOLLOWS
sachin
STUDENT NAMES AFTER SORTING ARE AS FOLLOWS
rahul
sachin 60
Slip:-29
Q. Write a java program to accept n employee
names from user, store them into the LinkedList class and display them by
using.
a. Iterator Interface
b. ListIterator Interface
PROGRAMM:-
import java.util.*;
import java.io.*;
class slipno29
{
public static void main(String s[])throws
IOException
{
BufferedReader b=new BufferedReader(new
inputStreamReader(System.in));
System.out.print("ENTER NUMBER OF RECORDS
YOU WANT TO ENTER");
int n=Integer.parseInt(b.readLine());
String e[]=new String[n];
for(int i=0;i<n;i++)
{
System.out.print("ENTER NAME OF
EMPLOYEE=");
e[i]=b.readLine();
}
LinkedList<String> a1=new
LinkedList<String>();
for(int i=0;i<n;i++)
{
a1.add(e[i]);
System.out.println(a1);
}
System.out.println("EMPLOYEE NAMES ARE AS
FOLLOWS");
System.out.println(" ");
System.out.println(a1);
System.out.println(" ");
System.out.println(" ");
System.out.println("USE OF ITERATOR");
System.out.println(" ");
System.out.println(" ");
Iterator<String> itr=a1.iterator();
while(itr.hasNext()) 61
{
System.out.println(itr.next());}
System.out.println(" ");
System.out.println(" ");
System.out.println("USE OF LIST
ITERATOR");
System.out.println(" ");
System.out.println(" ");
System.out.println("TRAVERSE IN FORWARD DIRECTION");
System.out.println(" ");
System.out.println(" ");
}
ListIterator<String> it=a1.listIterator();
while(it.hasNext())
{
System.out.println(it.next());
}
System.out.println(" ");
System.out.println(" ");
System.out.println("TRAVERSE IN PREVIOUS
DIRECTION");
while(it.hasPrevious())
{
System.out.println(it.previous());
}
}
}
OUTPUT:-
C:\Program Files\Java\jdk1.6.0_20\bin>javac
slipno29.java
C:\Program Files\Java\jdk1.6.0_20\bin>java
slipno29
ENTER NUMBER OF RECORDS YOU WANT RO ENTER2
ENTER NAME OF EMPLOYEE=rahul
ENTER NAME OF EMPLOYEE=saurav
[rahul]
[rahul, saurav]
EMPLOYEE NAMES ARE AS FOLLOWS
[rahul, saurav] 62
USE OF ITERATOR
rahul
saurav
USE OF LIST ITERATOR
TRAVERSE IN FORWARD DIRECTION
rahul
saurav
Slip:-30
Q. 30)Write an applet application in Java for
smile face.
PROGRAMM:-
*JAVA FILE
import java.awt.*;
import java.applet.*;
public class my extends Applet
{
public void paint(Graphics g)
{
g.setColor(Color.black);
g.drawOval(20,40,250,250);
g.fillOval(50,100,50,70); 63
g.fillOval(185,100,50,70);
g.drawLine(138,160,138,210);
g.drawLine(138,210,155,210);
g.drawArc(95,156,100,100,180,180);
}
}
*HTML FILE:-
<html>
<title>APPLET TEST</title>
</head>
<body>
<applet code="my.class"
height="400" width="400">
</applet>
</body>
</html>
OUTPUT:-
Slip 6. Create a calculator with functionality in an Applet.
Calculator.java
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class Calculator extends
Applet implements ActionListener
{
String str = " ";
int v1, v2, result;
TextField t1;
Button b[] = new Button[10];
Button add, sub, mul, div, clear,
mod, equals;
char choice;
public void init()
{
Color k = new Color(120, 89, 90);
setBackground(k);
t1 = new TextField(10);
GridLayout g1 = new GridLayout(4,
5);
setLayout(g1);
for (int i = 0; i < 10; i++)
{
b[i] = new Button("" +
i);
}
add = new Button("add");
sub = new Button("sub");
mul = new Button("mul");
div = new Button("div");
mod = new Button("mod");
clear = new
Button("clear");
equals = new
Button("equals");
t1.addActionListener(this);
add(t1);
for (int i = 0; i < 10; i++)
{
add(b[i]);
}
add(add);
add(sub);
add(mul);
add(div);
add(mod);
add(clear);
add(equals);
for (int i = 0; i < 10; i++)
{
b[i].addActionListener(this);
}
add.addActionListener(this);
sub.addActionListener(this);
mul.addActionListener(this);
div.addActionListener(this);
mod.addActionListener(this);
clear.addActionListener(this);
equals.addActionListener(this);
}
public void
actionPerformed(ActionEvent ae)
{
String str = ae.getActionCommand();
char ch = str.charAt(0);
if (Character.isDigit(ch))
t1.setText(t1.getText() + str);
else
{
if (str.equals("add"))
{
v1 =
Integer.parseInt(t1.getText());
choice = '+';
t1.setText("");
}
else if
(str.equals("sub"))
{
v1 =
Integer.parseInt(t1.getText());
choice = '-';
t1.setText("");
}
if (str.equals("mul"))
{
v1 =
Integer.parseInt(t1.getText());
choice = '*';
t1.setText("");
}
if (str.equals("div"))
{
v1 = Integer.parseInt(t1.getText());
choice = '/';
t1.setText("");
}
if (str.equals("mod"))
{
v1 =
Integer.parseInt(t1.getText());
choice = '%';
t1.setText("");
}
if (str.equals("clear"))
{
t1.setText("");
}
if (str.equals("equals"))
{
v2 = Integer.parseInt(t1.getText());
switch (choice)
{
case '+': result = v1 + v2;
break;
case '-': result = v1 - v2;
break;
case '*': result = v1 * v2;
break;
case '/': result = v1 / v2;
break;
case '%': result = v1 % v2;
break;
}
t1.setText("" + result);
}
}
}
}
Calculator.html
<html>
<head>
<title>smile
face</title>
</head>
<body>
<applet
code="Calculator.class" width=400 height=400></applet>
</body>
</html>
OutPut:
C:\Program
Files\Java\jdk1.6.0_20\bin>javac Calculator.java
C:\Program Files\Java\jdk1.6.0_20\bin>
 Sem-V Practical Examination Lab Course- I (Java ) Solved Slips){kind=link}
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