Pick a number between 1 and 10

Computers operate using programs, which are detailed sets of instructions. This statement implies that in order to generate random numbers, some algorithms must also be used. The term “Random” refers to something that cannot be logically predicted, and if a program generates random numbers that can be predicted, then this process is truly not random. It does not always represent a different value but an unpredictable value.

The study will explain the procedure of generating random numbers between 1 and 10.

For generating random numbers between 1 and 10, you can follow these methods:

• Math.random() method
• Random.nextInt() method

Let’s try to understand the working of these methods one by one.

Method 1: Generate Random Number Between 1 and 10 Using Math.random() Method

For obtaining a random number between 1 and 10, we will use the “Math.random()” method. Because it is a static method, the class name is used in its call. This method generates a random number of “double” type.

Syntax

Use the below-given syntax for the Math.random() method:

Math.random() * ( max_num - min_num )

Here, the “max_num” is the maximum value that we will set as “10”, while the “min_num” is the minimum value that is “1” in case of generating a random number between 1 and 10.

Example

Firstly, we will create two integer type variables and specify “1” as “min_num” and “10” as “max_num”:

int min_num = 1;

int max_num = 10;

As the random() method of the Math class returns the random value in double type, so we will create a double type variable named “rand_num” for storing randomly generated value:

double rand_num = Math.random() * ( max_num - min_num );

Finally, print the randomly generated value on the console:

System.out.println("Random Number: "+ rand_num);

The output shows that a double type random number is generated between 1 and 10:

Now, let’s try to generate a random number of int type according to the specified range.

Method 2: Generate Random Number Between 1 and 10 Using Random.nextInt() Method

The Java “Random” class offers a “nextInt()” that can be utilized to generate an integer or int type random number. In our case, we will use the mentioned method to generate an integer type random number between 1 and 10.

Syntax

The below-given syntax can be used for generating a random number using the nextInt() method:

rand.nextInt(max_num - min_num) + min_num;

Here, the “nextInt()” method is called using an object of the Random class “rand” and passing “max_num” and “min_num” as arguments.

Example

In this example, firstly, we will create an instance of the Random class named “rand”:

Then, create an integer type variable “x” for storing a randomly generated integer number between 1 and 10 by invoking nextInt() method.

int x = rand.nextInt(max_num - min_num) + min_num;

Lastly, print the generated random number on the console:

System.out.println("Random Number: "+ x);

As you can see, we have successfully generated “6” as an int type variable between 1 and 10:

We have gathered different ways for generating a random number between 1 and 10.

Conclusion

For generating a random number between 1 and 10, you can use the random() method and the nextInt() method. The random() method produces double type random numbers, while the nextInt() method generates a random number in integer format. In this study, we explained the method related to obtaining a random number between 1 and 10.