Decimal To Hex - Java Algorithm

Java examples for Algorithm:Number

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Description

Decimal To Hex

Demo Code

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class DecimalToHex {

    public static void main(String[] args) throws NumberFormatException,
            IOException {//from  ww  w . j a va  2 s  . c  o m
        BufferedReader bf = new BufferedReader(new InputStreamReader(
                System.in));

        int decimal = Integer.parseInt(bf.readLine());
        String hex = "";
        int bit = 0;

        while (decimal > 0) {
            bit = decimal % 16;
            decimal = decimal / 16;

            switch (bit) {
            case 0:
                hex = "0" + hex;
                break;
            case 1:
                hex = "1" + hex;
                break;
            case 2:
                hex = "2" + hex;
                break;
            case 3:
                hex = "3" + hex;
                break;
            case 4:
                hex = "4" + hex;
                break;
            case 5:
                hex = "5" + hex;
                break;
            case 6:
                hex = "6" + hex;
                break;
            case 7:
                hex = "7" + hex;
                break;
            case 8:
                hex = "8" + hex;
                break;
            case 9:
                hex = "9" + hex;
                break;
            case 10:
                hex = "A" + hex;
                break;
            case 11:
                hex = "B" + hex;
                break;
            case 12:
                hex = "C" + hex;
                break;
            case 13:
                hex = "D" + hex;
                break;
            case 14:
                hex = "E" + hex;
                break;
            case 15:
                hex = "F" + hex;
                break;

            }
        }
        System.out.println("0x" + hex);
    }

}

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