How To Find Binary Number In Java

Coffee Exercises: Convert a decimal number to binary numbers

Concluding update on December 13 2021 11:22:58 (UTC/GMT +viii hours)

Coffee Bones: Exercise-19 with Solution

Write a Java plan to convert a decimal number to binary number.

Decimal number: The decimal numeral system is the standard system for cogent integer and non-integer numbers. Information technology is also chosen base-ten positional numeral system.

Binary number: In digital electronics and mathematics, a binary number is a number expressed in the base of operations-2 numeral organization or binary numeral system. This system uses only ii symbols: typically 1 (one) and 0 (zero).

Test Data:
Input a Decimal Number : 5

Pictorial Presentation: of decimal to binary number

Sample Solution:

Java Lawmaking:

            import java.util.Scanner; public class Exercise19 {       public static void master(String args[])     {         int dec_num, quot, i=1, j;         int bin_num[] = new int[100];         Scanner scan = new Scanner(System.in); 		         System.out.print("Input a Decimal Number : ");         dec_num = scan.nextInt(); 		         quot = dec_num; 		         while(quot != 0)         {             bin_num[i++] = quot%2;             quot = quot/2;         } 		         System.out.print("Binary number is: ");         for(j=i-1; j>0; j--)         {             System.out.print(bin_num[j]);         }         System.out.impress("\n");     } }                      

Sample Output:

Input a Decimal Number : 5                                                                                     Binary number is: 101          

Flowchart:

Java Code Editor:

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Previous: Write a Java program to multiply two binary numbers.
Next: Write a Java program to convert a decimal number to hexadecimal number.

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Java: Tips of the Day

Java: isPowerOfTwo

Checks if a value is positive power of two.
To understand how it works let's assume we made a phone call IsPowerOfTwo(4).
As value is greater than 0, then right side of the && operator will be evaluated.
The result of (~value + 1) is equal to value itself. ~100 + 001 => 011 + 001 => 100. This is equal to value.
The effect of (value & value) is value. 100 & 100 => 100.
This will value the expression to true equally value is equal to value.

public static boolean isPowerOfTwo(final int value) {     return value > 0 && ((value & (~value + i)) == value); }          

Ref: https://bit.ly/2YP9WBt

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Source: https://www.w3resource.com/java-exercises/basic/java-basic-exercise-19.php

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