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Java Integer toOctalString() Method

Java toOctalString() method is the part of the Integer class of the java.lang package. This method is used to return the octal equivalent of the base 8 of the value passed as an unsigned integer as a String.

For example: for the value 200, the equivalent octal string returned will be 310.

Syntax:

public static String toOctalString (int i)  

Parameters:

The parameter passed is the integer value of which the string representation of the equivalent octal of base 8 is to be returned.

Returns:

Returns the String representation of the parameter passed as equivalent base 8 octal value.

Example 1:

Here, a positive and a negative number is taken for a better understanding of the method.

import java.lang.Integer;
public class StudyTonight
{  
    public static void main(String[] args) 
    {          
        int i = 284; 
        int j = -56;
        System.out.println("Actual number is = " + i);  
        //returns the integer value in octal base 8 as a string
        System.out.println("Octal equivalent is = " + Integer.toOctalString(i));
        
        System.out.println("Actual number is = " + j);  
        //returns the integer value in octal base 8 as a string
        System.out.println("Octal equivalent is = " + Integer.toOctalString(j)); 
    }  
} 


Actual number is = 284
Octal equivalent is = 434
Actual number is = -56
Octal equivalent is = 37777777710

Example 2:

Here is a user-defined example where anyone using this code can put a value of his choice and get the equivalent output.

import java.util.Scanner;  

public class StudyTonight
{  
    public static void main(String[] args) 
    {          
        try
        {
            System.out.print("Enter the Number = ");  
            Scanner sc = new Scanner(System.in);  
            int i = sc.nextInt();  
            System.out.println("Actual Number is  = " + i);  
            //returns the integer value in octal base 8 as a string
            System.out.println("Octal representation is = " + Integer.toOctalString(i)); 
        }  
        catch(Exception e)
        {
            System.out.println("Invalid Number");
        }
    }
}  


Enter the Number = 243
Actual Number is = 243
Octal representation is = 363
***********************************
Enter the Number = -45
Actual Number is = -45
Octal representation is = 37777777723
***********************************
Enter the Number = 0x97
Invalid Number

Live Example:

Here, you can test the live code example. You can execute the example for different values, even can edit and write your examples to test the Java code.