Java Hex Calculate toHexString(final byte[] bytes)

Description

Converts a given byte input to a hex string.

License

Apache License

Parameter

Parameter	Description
bytes	the input bytes

Return

the hex string

Declaration

public static String toHexString(final byte[] bytes) 

Method Source Code

//package com.java2s;
/*/*from   w  w  w.ja  v  a  2 s .  co  m*/
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    private static String[] BYTE_TO_HEX = new String[256];

    /**
     * Converts a given byte input to a hex string. Runs 4,x times quicker than
     * String.format("%1$032x", new BigInteger(1, byte[]));
     * <p/>
     * Copied the function from:
     * https://github.com/shaeberling/euler/blob/master/java/src/com/s13g/aoc/StringUtil.java
     *
     * @param bytes the input bytes
     * @return the hex string
     */
    public static String toHexString(final byte[] bytes) {
        final StringBuilder builder = new StringBuilder();
        for (byte b : bytes) {
            builder.append(BYTE_TO_HEX[b < 0 ? b + 256 : b]);
        }
        return builder.toString();
    }
}

Related

1. toHexString(final byte[] bs, final char[] myDigits)
2. toHexString(final byte[] buffer)
3. toHexString(final byte[] bytes)
4. toHexString(final byte[] bytes)
5. toHexString(final byte[] bytes)
6. toHexString(final byte[] bytes)
7. toHexString(final byte[] data)
8. toHexString(final byte[] data)
9. toHexString(final byte[] data)