Java Dump Byte Array dumpHex(String _string, String _encoding)

Description

dump Hex

License

Apache License

Parameter

Parameter	Description
_string	a parameter
_encoding	a parameter

Exception

Parameter	Description
UnsupportedEncodingException	an exception

Declaration

public static String dumpHex(String _string, String _encoding) throws UnsupportedEncodingException 

Method Source Code

//package com.java2s;
/*/*from ww  w.  j ava2 s.co  m*/
 * Copyright (c)2005-2008 Mark Logic Corporation
 *
 * 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.
 *
 * The use of the Apache License does not indicate that this project is
 * affiliated with the Apache Software Foundation.
 */

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;

import java.io.IOException;
import java.io.InputStream;

import java.io.UnsupportedEncodingException;

public class Main {
    private static final int BUFFER_SIZE = 32 * 1024;

    /**
     * @param _string
     * @param _encoding
     * @return
     * @throws UnsupportedEncodingException
     */
    public static String dumpHex(String _string, String _encoding) throws UnsupportedEncodingException {
        StringBuilder sb = new StringBuilder();
        byte[] bytes = _string.getBytes(_encoding);
        for (int i = 0; i < bytes.length; i++) {
            // bytes are signed: we want unsigned values
            sb.append(Integer.toHexString(bytes[i] & 0xff));
            if (i < bytes.length - 1) {
                sb.append(" ");
            }
        }
        return sb.toString();
    }

    /**
     * @param contentFile
     * @return
     * @throws IOException
     */
    public static byte[] getBytes(File contentFile) throws IOException {
        InputStream is = null;
        try {
            is = new FileInputStream(contentFile);
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            byte[] buf = new byte[BUFFER_SIZE];
            int read;

            while ((read = is.read(buf)) > 0) {
                os.write(buf, 0, read);
            }
            return os.toByteArray();
        } finally {
            if (is != null)
                is.close();
        }
    }
}

Related

1. dumpBytesToFile(byte[] bytes, String outputFile)
2. dumpClass(String file, byte[] bytes)
3. dumpFileIntoByteArray(File f)
4. dumpHex(byte[] data)
5. dumpHex(PrintStream out, byte[] data, int offset, int length)
6. dumpHex(String value, String encoding)