_JAVA
3350703
Lab manual Solution
1: Write a Program in Java to generate first n prime numbers.
Answer:-
public class prime
{
public static void main(String args[])
{
int x,y,c=0,n=10;
for(x=2;x<n;x++)
{
if(x%2 !=0 || x==2)
{
for(y=2;y<=x/2;y++)
{
if(x%y==0)
{
break;
}
}
if(y>x/2)
{
System.out.println(x);
c++;
}
}
}
System.out.println("\n Total" + c);
}
}
OUTPUT:-
2
3
5
7
Total: 4
2: Write a Program in Java to generate first n prime numbers.
Answer:-
OUTPUT:-
Enter three integers
2
3
4
Maximum of three is: 4
3: Write a Program in Java to find second maximum of n numbers without using arrays.
Answer:-
OUTPUT:-
5 No.s:
n1=90000
n2=18000
n3=20000
n4=16000
n5=30000
Largest=90000
2nd Largest= 30000
4: Write a Program in Java to reverse the digits of a number using while loop.
Answer:-
OUTPUT:-
Please enter number to be reversed using Java program:
123
Reverse of number: 423 is 324
5: Write a Program in Java to convert number into words & print it.
Answer:-
OUTPUT:-
Output -1:
Enter the Value: 12515456
one crore twenty five lack fifteen thousand four hundred fifty six
Output -2:
Enter the Value: 54321
fifty four thousand three hundred twenty one
Output -3:
Enter the Value: 123
one hundred twenty three
6: Write a Program in Java to use Wrapper class of each primitive data types .
Answer:-
OUTPUT:-
Value of Wrapper objects (printing as objects )
Byte object g1: 2
Integer object m1: 50
Float object f1: 8.6f
Double object r1: 50.5
Unwrapped values (printing as data types)
byte value, bv: 2
int value, iv: 50
float value, fv: 8.6f
double value, dv: 50.5
OUTPUT:-
100 100
7: Write a Program in Java to multiply two matrix.
Answer:-
OUTPUT:-
Enter the number of rows and columns of first matrix
2 2
Enter the elements of first matrix
1
2
1
2
Enter the number of rows and columns of Second matrix
2 2
Enter the elements of second matrix
2
2
2
2
Product of entered matrices:-
6 6
6 6
8: Write a Static block which will be executed before main() method in a class.
Answer:-
OUTPUT:-
Print inside static block
First object
Print Print inside printmsg() method
Second object
Print Print inside printmsg() method
9: Write a program in Java to demonstrate use of this keyword. Check whether this can access the private members of the class or not.
Answer:-
OUTPUT:-
x= 4
y= 3
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