Java Convert Decimal to Octal

by Online Tutorials Library July 22, 2022

Java Convert Decimal to Octal

We can convert decimal to octal in java using Integer.toOctalString() method or custom logic.

Java Decimal to Octal conversion: Integer.toOctalString()

The Integer.toOctalString() method converts decimal to octal string. The signature of toOctalString() method is given below:

Let’s see the simple example of converting decimal to octal in java.

 //Java Program to demonstrate the use of Integer.toOctalString() method public class DecimalToOctalExample1{ public static void main(String args[]){ //Using the predefined Integer.toOctalString() method //to convert decimal value into octal System.out.println(Integer.toOctalString(8)); System.out.println(Integer.toOctalString(19)); System.out.println(Integer.toOctalString(81)); }} 

Test it Now

Output:

10 23 121

Java Decimal to Octal conversion: Custom Logic

We can convert decimal to octal in java using custom logic.

 //Java Program to demonstrate the decimal to octal conversion //using custom code public class DecimalToOctalExample2{   //creating method for conversion so that we can use it many times public static String toOctal(int decimal){       int rem; //declaring variable to store remainder     String octal=""; //declareing variable to store octal     //declaring array of octal numbers     char octalchars[]={'0','1','2','3','4','5','6','7'};     //writing logic of decimal to octal conversion      while(decimal>0)     {        rem=decimal%8;         octal=octalchars[rem]+octal;         decimal=decimal/8;     }     return octal; }   public static void main(String args[]){     //Calling custom method to get the octal number of given decimal value System.out.println("Decimal to octal of 8 is: "+toOctal(8)); System.out.println("Decimal to octal of 19 is: "+toOctal(19)); System.out.println("Decimal to octal of 81 is: "+toOctal(81)); }}     

Test it Now

Output:

Decimal to octal of 8 is: 10 Decimal to octal of 19 is: 23 Decimal to octal of 81 is: 121

References

Next Topic#

Java Convert Decimal to Octal

Java Convert Decimal to Octal

Java Decimal to Octal conversion: Integer.toOctalString()

Java Decimal to Octal conversion: Custom Logic

References

Java ObjectInputStream

Java String toCharArray() method

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