**Build a Java application to generate 20 numbers from 1000 to 1999 and show those that divided by 11 let rest 5.**

To generate random numbers, we have to import the Random class, which gives methods for generating random numbers:

*import java.util.Random;*

### Step 1:

We need to create an object of type Random, object 'randomGenerator'.

It who will 'take care' of the generation and the types (integer, decimal, etc.).

### Step 2:

A loop of 20 iterations, where we generate 20 integers.### Step 3:

The piece:*randomGenerator.nextInt(1000)*

Generates random numbers within a range of 1000 numbers from 0 to 999.

Because we want to generate numbers between 1000 to 1999, we must add 1000, getting:

*randomGenerator.nextInt(1000) + 1000*

### Step 4:

We will use the operator '%' (modulus or remainder of the division) and a conditional 'if' to print only those numbers that leave remainder 5 when divided by 11.

The Java code is:

```
import java.util.Random;
public class random1 {
public static void main(String[] args) {
// Step 1: Preparing the generator
Random randomGenerator = new Random();
// Step 2: Generating 20 numbers
for(int count=1 ; count <= 20 ; count++){
// Step 3: generating a number between 1000 and 1999
int random_num = randomGenerator.nextInt(1000) + 1000;
// Step 4: printing only those who let rest 5 in the division by 11
if(random_num % 11 == 5)
System.out.println(random_num);
}
}
}
```

#### Second manner:

We declare full only once, and 'feed' the generator to each iteration.The Java Code is:

```
import java.util.Random;
public class random2 {
public static void main(String[] args) {
int random_num;
// Step 1: Generating 20 numbers
for(int count=1 ; count <= 20 ; count++){
// Step 2: Preparing the generator
Random randomGenerator = new Random();
// Step 3: generating a number between 1000 and 1999
random_num = randomGenerator.nextInt(1000) + 1000;
// Step 4: printing only those who let rest 5 in the division by 11
if(random_num % 11 == 5)
System.out.println(random_num);
}
}
}
```

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