Static method – java convert decimal to octal

Let’s learn static method – java convert decimal to octal.

Static method – java convert decimal to octal

Write a java program to convert a decimal number to octal number is one of the common java interview question.

In this post let’s learn decimal to octal conversion using static method.

Also read – decimal to octal conversion using recursion in java

In order to convert decimal to octal first user enters a decimal number. Then this decimal number is divided by 8.

After dividing decimal number by 8 store the remainder.

Now we have to repeat previous steps until number is divided.

Also read – decimal to hexadecimal conversion in java

In the last step print the reverse of the remainder we got while dividing by 8 in the console.

This reversed octal number is equivalent to decimal number.

Decimal to octal conversion

Here’s how to write static method convert a decimal number to octal number.

import java.util.Scanner;
public class DecimalToOctal
{
   static int a = 1;
   public static void main(String[] args)
   {
      int decimal;
      Scanner sc = new Scanner(System.in);   
      System.out.println("Please enter a decimal number : ");
      decimal = sc.nextInt();
      System.out.println("The octal number is : ");
      int[] oct = convertToOctal(decimal); 
      for(int x = a - 1; x > 0; x--)
      {
         System.out.print(oct[x]);
      }
      sc.close();
   }
   static int[] convertToOctal(int oct) 
   {
      int y[] = new int[50];
      while(oct != 0)
      {
         y[a++] = oct % 8;
         oct = oct / 8;
      }
      return y;
   }
}

Output:

Please enter a decimal number : 100
The octal number is : 144

Click here to learn vice versa of above java program with explanation.

Also read – convert decimal to binary in java

Also read – java program to convert decimal to binary and vice versa

Also read – java program to convert decimal to octal using while loop