Jan 14, 2022by @kodeazy

How to check given number is prime or not in java?

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java

A prime number is a number that is divided by 1 and itself.

Below is an example program on prime number.

class PrimeCheck{
public static void main(String args[]){
	int num = 11;
	for (int index = 2; index <= num / 2; ++index) {
	if (num % index == 0) {
			System.out.println("given number is not prime");
			return;
	}
	
}
System.out.println("given number is a prime");
	return;
}
}

12 is divisible by 1,2,3,4,6. so it is not a prime number.
Output:
```
given number is not prime
```