### Archive

Posts Tagged ‘Java Basic Programs’

## Java Program to find weather a number is prime or not – Q5

Q5: Java Program to find weather a number is prime or not

Prime Number is a natural number greater than 1 that has no positive divisors other than 1 and itself.
For example: 2, 3, 5, 7, 11, 13, 19, 23, 29, etc.

```class primeornot{
public static void main(String args[]){
boolean pr = false;
int a = Integer.parseInt(args[0]);
for(int i=2; i<a; i++){
if(a % i == 0){
pr = false;
break;
}
else
pr = true;
}
if(pr==true)
System.out.println(a + " is Prime.");
else
System.out.println(a + " is not Prime.");
}
}
```

… from College notes (BCA/MCA assignments):

Categories: Java

## Java Program to find fibonnaci series up to a particular number – Q4

Q4: Java Program to find factorial of a given number without recursion

The Fibonacci numbers are the numbers in the following integer sequence, called the Fibonacci sequence, and characterized by the fact that every number after the first two is the sum of the two preceding ones.

For example:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, …

```class fibseries{
public static void main(String args[]){
int a = Integer.parseInt(args[0]);
int f=0, f1=0, f2=1;
System.out.print("Fibbonacci Series: ");
for(int i=0; i<a; i++){
System.out.print(f1 + " ");
f = f1 + f2;
f1 = f2;
f2 = f;
}
}
}
```

… from College notes (BCA/MCA assignments):

Categories: Java

## Java Program to find factorial of a given number with recursion – Q3

Q3: Java Program to find factorial of a given number with recursion

The factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n.

For example:
5! =     5*4*3*2*1 = 120
6! = 6*5*4*3*2*1 = 720

```class fact_rec{
public static void main(String args[]){
int num;
long fac = 1;
num = Integer.parseInt(args[0]);
fac = factorial(num);
System.out.println("Factorial of " + num + " is: " + fac);
}
public static long factorial(int num){
if(num<=1)
return 1;
else
return (num * factorial(num-1));
}
}
```

… from College notes (BCA/MCA assignments):

Categories: Java

## Java Program to find factorial of a given number without recursion – Q2

Q2: Java Program to find factorial of a given number without recursion

The factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n.

For example:
5! =     5*4*3*2*1 = 120
6! = 6*5*4*3*2*1 = 720

```class fact{
public static void main(String args[]){
int num;
long fac = 1;
num = Integer.parseInt(args[0]);
for(int i=1; i<=num; i++){
fac *= i;
}
System.out.println("Factorial of " + num + " is: " + fac);
}
}
```

… from College notes (BCA/MCA assignments):

Categories: Java

## Java Program to find max of three numbers – Q1

Q1: Java Program to find max of three numbers

```class MaxThree{
public static void main(String args[]){
int a = Integer.parseInt(args[0]);
int b = Integer.parseInt(args[1]);
int c = Integer.parseInt(args[2]);
int x;
x = ((a>b) && (a>c)) ? a : ( (b > a) && (b > c) ) ? b : c;
System.out.println(x + " is largest.");
}
}
```

… from College notes (BCA/MCA assignments):

Categories: Java Tags: