a must read

1. 1
// WAP to implement bitwise operators.
class Bitwise
{
public static void main(String arg[])
{
int a=3;
int b=6;
int c=a|b;
int d=a&b;
int e=a^b;
int f=(~a & b)|(a & ~b);
int g=~a & 0x0f;
System.out.println(" a=" +a);
System.out.println(" b=" +b);
System.out.println(" a|b=" +c);
System.out.println(" a&b=" +d);
System.out.println(" a^b=" +e);
System.out.println("(~a & b)|(a & ~b)=" +f);
System.out.println(" ~a & 0x0f=" +g);
}
}
OUTPUT
/*
C:sinny>javac Bitwise.java
C:sinny>java Bitwise
a=3
b=6
a|b=7
a&b=2
a^b=5
(~a & b)|(a & ~b)=5
~a & 0x0f=12
*/

2. 2
// WAP to implement arithmetic operator
class Arithmetic
{
public static void main(String arg[])
{
//system.out.println("Integer Arithmetic");
int a=1+1;
int b= a*3;
int c= b/4;
int d= c-a;
int e= -d;
System.out.println("a=" + a);
System.out.println("b=" + b);
System.out.println("c=" + c);
System.out.println("d=" + d);
System.out.println("e=" + e);
}
}
OUTPUT
/*
C:sinny>javac Arithmetic.java
C:sinny>java Arithmetic
a=2
b=6
c=1
d=-1
e=1 */

3. 3
// WAP to implement conditional operator
class conditional
{
public static void main(String arg[])
{
int i,z;
i=10;
z= i<0 ? -i :i; // get absolute value of i
System.out.print("absolute vale of");
System.out.println( i +"is" + z);
i=-10;
z= i<0 ? -i :i; // get absolute value of i
System.out.print("absolute vale of");
System.out.println( i +"is" + z);
}
}
OUTPUT
/*
C:sinny>javac conditional.java
C:sinny>java conditional
absolute vale of10is10
absolute vale of-10is10
*/

4. 4
//WAP to implement constructor overload
class box
{
double width;
double height;
double depth;
box(double w, double h, double d)
{
w=width;
h=height;
d=depth;
}
box()
{
width=-1;
height=-1;
depth=-1;
}
box(double len)
{
width=height=depth=len;
}
double volume()
{
return width*height*depth;
}
}
class overload
{
public static void main(String arg[])
{
box mybox1 = new box(10,20,30);
box mybox2 = new box();

5. 5
box mycube = new box(7);
double vol;
vol=mybox1.volume();
System.out.println("volume of my box1 is " +vol);
vol=mybox2.volume();
System.out.println("volume of my box2 is " +vol);
vol= mycube.volume();
System.out.println("volume of mycube is " +vol);
}
}
OUTPUT
/*
C:sinny>javac overload.java
C:sinny>java overload
volume of my box1 is 0.0
volume of my box2 is -1.0
volume of mycube is 343.0
*/

6. 6
// Prefixincrement and postfix incrementoperators.
public class Increment
{
public static void main( String args[] )
{
int c=5; // assign 5 to c
System.out.println( c ); // prints 5
System.out.println( c++ ); // prints 5 then postincrements
System.out.println( c ); // prints 6
System.out.println(); // skip a line
// demonstrate prefix increment operator
c = 5; // assign 5 to c
System.out.println( c ); // prints 5
System.out.println( ++c ); // preincrements then prints 6
System.out.println( c ); // prints 6
} // end main
} // end class Increment
/*
Output :
C:sinny>javac Increment.java
C:sinny>java Increment
5
5
6
5
6
6*/

7. 7
// Prefixdecrement and postfix decrementoperators.
public class decrement
{
public static void main( String args[] )
{
int c=7; // assign 7 to c
System.out.println( c ); // prints 5
System.out.println( c-- ); // prints 5 then postdecrements
System.out.println( c ); // prints 6
System.out.println(); // skip a line
// demonstrate prefix decrement operator
c = 7; // assign 7 to c
System.out.println( c ); // prints 5
System.out.println( --c ); // predecrements then prints 6
System.out.println( c ); // prints 6
} // end main
} // end class decrement
OUTPUT
/*
C:sinny>javac decrement.java
C:sinny>java decrement
7
7
6
7
6
6 */

8. 8
// WAP to implementmethod overloading.
class overloadDemo
{
void test()
{
System.out.println("Function without parameter");
}
void test(int a) //overload test for one integer parameter.
{
System.out.println("a: "+ a);
}
void test(int a, int b) //overload test for two integer parameter.
{
System.out.println("a and b: " +a + " " + b);
}
double test(double a) //overload test for one double parameter.
{
System.out.println("double a: " +a);
return a*a;
}
}
class overloadmethd
{
public static void main(String args[])
{
overloadDemo ob = new overloadDemo();
double result;
ob.test();
ob.test(10);
ob.test(10,20);
result = ob.test(123.25);
System.out.println("result of ob.test(123.25):" + result);
}
}

9. 9
// Output….
/*
C:sinny>javac overloadmethd.java
C:sinny>java overloadmethd
Function without parameter
a: 10
a and b: 10 20
double a: 123.25
result of ob.test(123.25):15190.5625
*/

10. 10
// WAP to implementrelational operator
import java.util.Scanner;
class evenodd
{
public static void main(String args[])
{
int i=1,n;
Scanner s1=new Scanner(System.in);
System.out.println("Enter the limit for Number :");
n=s1.nextInt();
System.out.println("ODD AND EVEN NUMBERS");
while(i<=n) //relational operator
{
if(i%2==0) //relational operator
{
System.out.println("i = " + i);
}
else
{
System.out.print("i = " + i);
System.out.print(" ");
}
i++;
}
}
}

11. 11
/*
OUTPUT
C:sinny>javac evenodd.java
C:sinny>java evenodd
Enter the limit for
20
ODD AND EVEN NUMBER
i = 1 i = 2
i = 3 i = 4
i = 5 i = 6
i = 7 i = 8
i = 9 i = 10
i = 11 i = 12
i = 13 i = 14
i = 15 i = 16
i = 17 i = 18
i = 19 i = 20
*/

12. 12
// WAP to implementsuper keyword
class Super
{
int x,y;
Super(int a,int b)
{
x=a;
y=b;
}
int area()
{
return x*y;
}
}
class Sub extends Super
{
int z;
Sub(int i,int j,int k)
{
super(i,j);
z=k;
}
int vol()
{
return x*y*z;
}
}
class demosuper
{
public static void main(String args[])
{
Sub s1=new Sub(10,10,20);
System.out.println("Area: " +s1.area());
System.out.println("Volume: " +s1.vol());
}

13. 13
}
OUTPUT
/*
C:sinny>javac demosuper.java
C:sinny>java demosuper
Area: 100
Volume: 2000
*/

14. 14
// WAP A PROGRAM TO SHOW
PATTERN
class pattern
{
int i ;
int j ;
void display()
{
for(i=1; i<=5; i++)
{
for(j=1; j<=i; j++)
{
System.out.print( j ) ;
}
System.out.println(" ") ;
}
}
public static void main(String args[])
{
pattern p = new pattern() ;
p.display();
}
}

15. 15
OUTPUT
/*
C:sinny>javac pattern.java
C:sinny>java pattern
1
12
123
1234
12345
*/

16. 16
// WAP A PROGRAM TO SHOW
PATTERN
class pattern1
{
int i ;
int j ;
void display()
{
for(i=5; i>=0; i--)
{
for(j=i; j<=5; j++)
{
System.out.print( j ) ;
}
System.out.println() ;
}
}
public static void main(String args[])
{
pattern1 p = new pattern1() ;
p.display();
}
}

17. 17
OUTPUT
/*
C:sinny>javac pattern1.java
C:sinny>java pattern1
5
45
345
2345
12345
012345
*/

18. 18
Practical file
Of
JAVA
Submitted To : Submitted By :
Mr. Jainendra Name : Pavleen singh
BCA – Deptt. Roll No :02021202011
Sem : 4nd
sem.
Maharaja Surajmal Institute

19. 19
INDEX
Sr. No Name of Program Page No Sign.
1 WAP TO DEMONSTRATE
BUTTONS IN APPLET
2 WAP TO DEMONSTRATE
CHECKBOX GROUP IN APPLET
3 WAP TO DEMONSTRATE
CHECKBOX IN APPLET
4 WAP TO DEMONSTRATE
CHOICELIST IN APPLET
5
WAP TO DEMONSTRATE
LABELS IN APPLET
6
WAP TO DEMONSTRATE
LIST IN APPLET
7

20. 20
WAP TO DEMONSTRATE
MOVING BANNER IN APPLET
8
WAP TO DEMONSTRATE
GRAPHICS IN APPLET
9
WAP TO DEMONSTRATE
TEXTFIELD IN APPLET
10
WAP TO DEMONSTRATE
MULTITHREAD
11
WAP TO DEMONSTRATE
SCANNER CLASS
12 WAP TO DEMONSTRATE
TEXTFIELD IN SWINGS

21. 21
13
WAP TO DEMONSTRATE
BUTTON IN SWINGS