Java Hex Calculate toHexString(int[] ia)

Description

Get the hex string for the bytes.

License

Apache License

Parameter

Parameter	Description
ia	the array of "bytes"

Return

hex string for the bytes

Declaration

public static String toHexString(int[] ia) 

Method Source Code

//package com.java2s;
/*//from   w w  w.j a  v  a2 s  .c o  m
 * Copyright (C) 2013 Google Inc.
 *
 * 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 {
    /**
     * Get the hex string for the bytes.
     *
     * <p>
     * Only the lower 8 bits of each int is used for the byte.
     *
     * <p>
     * The bytes are assumed to be most significant byte first.
     *
     * @param ia
     *          the array of "bytes"
     *
     * @return hex string for the bytes
     */
    public static String toHexString(int[] ia) {
        return toHexString(ia, 0, ia.length, 0);
    }

    /**
     * Get the hex string for the bytes.
     *
     * <p>
     * Only the lower 8 bits of each int is used for the byte.
     *
     * <p>
     * The bytes are assumed to be most significant byte first.
     *
     * @param ia
     *          the array of "bytes"
     * @param offset
     *          where in the array to begin
     * @param length
     *          the number of bytes to use from the array
     * @param width
     *          the number of bytes to be displayed per line, {@code 0} if no width limit
     *
     * @return hex string for the bytes
     */
    public static String toHexString(int[] ia, int offset, int length, int width) {
        StringBuilder builder = new StringBuilder();

        int outputCount = 0;
        for (int i = 0; i < length; i++) {
            int b = ia[offset + i];

            if (width != 0 && outputCount % width == 0) {
                builder.append("\n");
            } else {
                builder.append(" ");
            }

            String istr = Integer.toHexString(i & 0xff);
            if (istr.length() < 2) {
                builder.append('0');
            }
            builder.append(istr);

            outputCount++;
        }

        // Skip the first spacer character.
        return builder.substring(1);
    }

    /**
     * Get the hex string for the bytes.
     *
     * <p>
     * The bytes are assumed to be most significant byte first.
     *
     * @param ba
     *          the array of bytes
     *
     * @return hex string for the bytes
     */
    public static String toHexString(byte[] ba) {
        return toHexString(ba, 0, ba.length, 0);
    }

    /**
     * Get the hex string for the bytes.
     *
     * <p>
     * The bytes are assumed to be most significant byte first.
     *
     * @param ba
     *          the array of bytes
     * @param offset
     *          where in the array to begin
     * @param length
     *          the number of bytes to use from the array
     * @param width
     *          the number of bytes to be displayed per line, {@code 0} if no width limit
     *
     * @return hex string for the bytes
     */
    public static String toHexString(byte[] ba, int offset, int length, int width) {
        StringBuilder builder = new StringBuilder();

        int outputCount = 0;
        for (int i = 0; i < length; i++) {
            int b = ba[offset + i];

            if (width != 0 && outputCount % width == 0) {
                builder.append("\n");
            } else {
                builder.append(" ");
            }
            String bstr = Integer.toHexString(b & 0xff);
            if (bstr.length() < 2) {
                builder.append('0');
            }
            builder.append(bstr);

            outputCount++;
        }

        // Skip the first spacer character.
        return builder.substring(1);
    }
}

Related

1. toHexString(int value, int len)
2. ToHexString(int value, int length)
3. toHexString(int value, int minLength)
4. toHexString(int value, int numDigits)
5. toHexString(int[] data)
6. toHexString(int[] x, int bitsPerDigit)
7. toHexString(Integer num)
8. toHexString(long i)
9. toHexString(long l)