Java Convert Octal to HexaDecimal

In this source code example, we will write a Java program that converts any Octal number to a HexaDecimal number.
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Java Convert Octal to HexaDecimal

This class converts any Octal number to a HexaDecimal number:
package net.sourcecodeexamples.java.Conversions; import java.util.Scanner; /**  * Converts any Octal Number to HexaDecimal  *  * @author https://www.sourcecodeexamples.net  */ public class OctalToHexadecimal { /**  * This method converts a Octal number to a decimal number  *  * @param s The Octal Number  * @return The Decimal number  */ public static int octToDec(String s) { int i = 0; for (int j = 0; j < s.length(); j++) { char num = s.charAt(j); num -= '0'; i *= 8; i += num; } return i; } /**  * This method converts a Decimal number to a Hexadecimal number  *  * @param d The Decimal Number  * @return The Hexadecimal number  */ public static String decimalToHex(int d) { String digits = "0123456789ABCDEF"; if (d <= 0) return "0"; String hex = ""; while (d > 0) { int digit = d % 16; hex = digits.charAt(digit) + hex; d = d / 16; } return hex; } public static void main(String args[]) { Scanner input = new Scanner(System.in); System.out.print("Enter the Octal number: "); // Take octal number as input from user in a string String oct = input.next(); // Pass the octal number to function and get converted deciaml form int decimal = octToDec(oct); // Pass the decimal number to function and get converted Hex form of the number String hex = decimalToHex(decimal); System.out.println("The Hexadecimal equivalant is: " + hex); input.close(); } }
In the above program, first we convert Octal number to decimal and then decimal to Hexadecimal. Note that the comments in the above program are self-descriptive.

Output

Enter the Octal number: 121 The Hexadecimal equivalant is: 51
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