# Prime Number Program in Java

Prime number in Java: Prime number is a number that is greater than 1 and divided by 1 or itself only. In other words, prime numbers can't be divided by other numbers than itself or 1. For example 2, 3, 5, 7, 11, 13, 17.... are the prime numbers.

#### Note: 0 and 1 are not prime numbers. The 2 is the only even prime number because all the other even numbers can be divided by 2.

Let's see the prime number program in java. In this java program, we will take a number variable and check whether the number is prime or not.

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Output:

```3 is prime number
```

## Prime Number Program using Method in Java

Test it Now

Output:

```1 is not prime number
3 is prime number
17 is prime number
20 is not prime number
```

## Prime Number Program in Java (Another way)

You can also use a method where number is not predefined. Here, user has to put the number to check if the number is prime.

Output:

Use image PrimeExample1

## Find prime numbers between two numbers

You can also find prime numbers between two specified numbers.

Output:

Use image PrimeExample2
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