﻿ Java exercises: Find the number of integers within the range of two specified numbers and that are divisible by another number - w3resource # Java Exercises: Find the number of integers within the range of two specified numbers and that are divisible by another number

## Java Basic: Exercise-56 with Solution

Write a Java program to find the number of integers within the range of two specified numbers and that are divisible by another number.
Sample Data:
For example x = 5, y=20 and p =3, find the number of integers within the range x..y and that are divisible by p i.e. { i :x ≤ i ≤ y, i mod p = 0 }

Sample Solution:

Java Code:

``````import java.util.*;
public class Exercise56 {
public static void main(String[] args){
int x = 5;
int y = 20;
int p = 3;
System.out.println(result(x,y,p));
}
public static int result(int x, int y, int p) {
if (x%p == 0)
return( y/p - x/p + 1);
return(y/p - x/p);
}
}
```
```

Sample Output:

```5
```

Pictorial Presentation: Flowchart: Java Code Editor:

What is the difficulty level of this exercise?

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## Java: Tips of the Day

Execution of console commands:

Java allows you to execute console commands directly from code using a class Runtime. It is very important not to forget about exception handling.

For example, let's try to open a PDF file through a Java terminal:

```import java.io.BufferedReader;
import java.io.InputStream;

public class ShellCommandExec {

public static void main(String[] args) {
String gnomeOpenCommand = "gnome-open //home//user//Documents//MyDoc.pdf";

try {
Runtime rt = Runtime.getRuntime();
Process processObj = rt.exec(gnomeOpenCommand);

InputStream stdin = processObj.getErrorStream();

String myoutput = "";