- Java Basic Programs
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- Java Print Hello World
- Java Get Input from User
- Java Print Integer
- Java Add two Numbers
- Java Check Even or Odd
- Java Check Prime or Not
- Java Check Alphabet or Not
- Java Check Vowel or Not
- Check Reverse equal Original
- Java Fahrenheit to Celsius
- Java Celsius to Fahrenheit
- Java Perfect Number Program
- Java Find Quotient Remainder
- Java Days to Seconds
- Java Count Digits in Number
- Java Binary Number Addition
- Java Discount Program
- Java Compute Courier Charge
- Java Find Telephone Bill
- Java Print ASCII Values
- Java Check Palindrome or Not
- Java Check Armstrong or Not
- Generate Armstrong Numbers
- Add two Numbers using Pointers
- Java Mathematical Programs
- Add Subtract Multiply & Divide
- Java Make Calculator
- Java Add Digits of Number
- Java Check Leap Year or Not
- Java Check Divisibility
- Java Find Simple Interest
- Java Find Compound Interest
- Java Print Fibonacci Series
- Java Find nCr nPr
- Calculate Average & Percentage
- Java Calculate Arithmetic Mean
- Java Calculate Student Grade
- Java Print Table of Number
- Java Print Prime Numbers
- Java Add n Numbers
- Java Interchange two Numbers
- Java Reverse Numbers
- Java Swap two Numbers
- Count Positive Negative & Zero
- Find Largest of two Numbers
- Find Largest of three Numbers
- Java Find Factorial of Number
- Java Find HCF & LCM
- Area & Perimeter of Square
- Area & Perimeter of Rectangle
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- Java Conversion Programs
- Java Decimal to Binary
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- Java Octal to Decimal
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- Java Pattern Programs
- Java Pattern of Stars
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- Java Pattern of Numbers
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- Java Print Diamond Pattern
- Java Print Floyd Triangle
- Java Print Pascal Triangle
- Java Array Programs
- One Dimensional Array Program
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- Find Largest Element in Array
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- Insert Element in Array
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- Java Merge two Array
- Java Bubble Sort
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- Java Insertion Sort
- Java Find Common Elements
- Java Count Even/Odd Number
- Two Dimensional Array Program
- Java Add two Matrices
- Java Subtract two Matrices
- Java Transpose Matrix
- Multiply two Matrices
- Three Dimension Array Program
- Java String Programs
- Java Print String
- Find Length of String
- Java Compare two String
- Java Copy String
- Java Concatenate String
- Java Reverse String
- Delete Vowels from String
- Delete Words from Sentence
- Find Occurrence of a Character
- Java Find Occurrence of a Word
- Occurrence of Each Character
- Java Occurrence of Each Word
- Java Count Repeated Characters
- Java Count Repeated Words
- Java Capitalize Each Word
- Java Count Vowels/Consonants
- Java Extract Numbers
- Java Count Word in String
- Remove Spaces from String
- Java Sort a String
- Java Uppercase to Lowercase
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- Java Check Anagram or Not
- Java Check Balance Parentheses
- Java Check Password Strength
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- Java Merge two File
- List files in Directory
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- Java Miscellaneous Programs
- Generate Random Numbers
- Java Print Time & Date
- Java Get IP Address
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- Java Programming Tutorial
- Java Tutorial
Java Program to Check if a Number is Divisible by Another Number
This article covers a program in Java to check if a number entered by user at run-time, is divisible by 3, 5, 7, 11 etc. or not. I've created multiple programs on the same topic. Let's start with very simple one.
Check if a Number is Divisible by 3
The question is, write a Java program to check whether a number is divisible by 3 or not. The number must be received at run-time of the program. Here is its answer. I mean, the program given below is the answer to this question:
import java.util.Scanner; public class CodesCracker { public static void main(String[] args) { int num, den=3; Scanner s = new Scanner(System.in); System.out.print("Enter a Number: "); num = s.nextInt(); if(num%den==0) System.out.println("\nIt is divisible by 3."); else System.out.println("\nIt is not divisible by 3."); } }
Here is its sample run with user input 12 as number to check whether it is divisible by 3 or not:
Here is another sample run with user input 13:
Check if a Number is Divisible by 5
To create a program that can check whether a number entered by user is divisible by 5 or not, just replace 3 with 5 from above program. Rest of all the codes are same.
Check if a Number is Divisible by Another Number
This is the main program that we need. Because using this program, we can test divisibility with any combination of numbers. For example, we can check whether a number is divisible by 11 or not, whether a number is divisible by 7 or not and so on.
import java.util.Scanner; public class CodesCracker { public static void main(String[] args) { int num, den; Scanner s = new Scanner(System.in); System.out.print("Enter Numerator: "); num = s.nextInt(); System.out.print("Enter Denominator: "); den = s.nextInt(); if(num%den==0) System.out.println("\n" +num+" is divisible by " +den); else System.out.println("\n" +num+" is not divisible by " +den); } }
Here is its sample run with user input 21 as numerator and 7 as denominator to check whether the number 21 is divisible by 7 or not:
Here is another sample run with user input 41 as numerator and 4 as denominator to check whether the number 41 is divisible by 4 or not:
Now let's modify the above program to provide user, two options to go with. One to check if a number is divisible by another single number, and other to check whether a number is divisible by multiple numbers or not:
import java.util.Scanner; public class CodesCracker { public static void main(String[] args) { int num, choice; Scanner s = new Scanner(System.in); System.out.println("1. Divisibility Test with Single Number."); System.out.println("2. Divisibility Test with Multiple Numbers."); System.out.print("Enter Your Choice (1 or 2): "); choice = s.nextInt(); if(choice==1) { int den; System.out.print("\nEnter Numerator: "); num = s.nextInt(); System.out.print("Enter Denominator: "); den = s.nextInt(); if(num%den==0) System.out.println("\n" +num+" is divisible by " +den); else System.out.println("\n" +num+" is not divisible by " +den); } else if(choice==2) { int total, count=0; System.out.println("\nWith How many numbers to apply divisibility test ? "); total = s.nextInt(); int[] den = new int[total]; System.out.print("\nEnter Numerator: "); num = s.nextInt(); System.out.print("Enter " +total+ " Denominators: "); for(int i=0; i<den.length; i++) { den[i] = s.nextInt(); if(num%den[i]!=0) count=1; } if(count==0) System.out.println("\n" +num+" is divisible by all given numbers"); else System.out.println("\n" +num+" is not divisible by all given numbers"); } else System.out.println("\nInvalid Choice!"); } }
Here is its sample run with user input 2 as choice, 2 as total numbers, 30 as numerator, 3 and 5 as two numbers to check whether 30 is divisible by 3 and 5 or not:
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