Java Integer to Hex intToHexString(int num)

Description

Converts the given integer value to hex string.

License

Open Source License

Parameter

Parameter	Description
num	the integer type value to convert.

Return

a string representing given int number in hexadecimal format.

Declaration

public static String intToHexString(int num) 

Method Source Code

//package com.java2s;
/*/*  w  w w.  j a  v a  2 s.co  m*/
 * This file is part of SerialPundit.
 * 
 * Copyright (C) 2014-2016, Rishi Gupta. All rights reserved.
 *
 * The SerialPundit is DUAL LICENSED. It is made available under the terms of the GNU Affero 
 * General Public License (AGPL) v3.0 for non-commercial use and under the terms of a commercial 
 * license for commercial use of this software. 
 * 
 * The SerialPundit is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */

public class Main {
    /**
     * <p>Converts the given integer value to hex string.</p>
     * 
     * @param num the integer type value to convert.
     * @return a string representing given int number in hexadecimal format.
     */
    public static String intToHexString(int num) {
        return toHexString(intToUnsignedLong(num), '0', 8, 8);
    }

    /**
     * <p>Internal use.</p>
     * 
     * @param num the long number to convert.
     * @param paddingChar the character to use for padding.
     * @param min the minimum length of the resulting String.
     * @param max the maximum length of the resulting String.
     */
    private static String toHexString(final long num, final char paddingChar, int min, int max) {
        /* Formats a long number into the specified length hex String. This is identical to Long.toHexString() 
         * except that it pads (with 0's), or truncates, to the specified size. If max < min, the 
         * functionality is exactly as Long.toHexString(). */
        StringBuffer sb = new StringBuffer(Long.toHexString(num));

        if (max < min) {
            return sb.toString();
        }

        while (sb.length() < max) {
            sb.insert(0, paddingChar);
        }

        return sb.substring(0, min);
    }

    /**
     * <p>Converts the given integer value to an unsigned long number. The least significant 4 bytes 
     * (32 bits) of the long number will be identical to the least significant 4 bytes (32 bits) of the 
     * integer number and the most significant 4 bytes (32 bits) of the long number will be zero.</p>
     * 
     * @param data the int type value to convert.
     * @return An unsigned long number representing the given int number.
     */
    public static long intToUnsignedLong(int data) {
        return 0x00000000ffffffff & ((long) data);
    }
}

Related

1. IntToHexString(final int value)
2. intToHexString(int _i)
3. intToHexString(int i)
4. intToHexString(int i)
5. intToHexString(int i)
6. intToHexString(int number)
7. intToHexString(int val, int width)
8. intToHexString(int value)
9. intToHexString(int value, int digits)