Java InputStream to Byte Array getBytes(InputStream in, int length, int BUF_SIZE)

Description

get Bytes

License

Open Source License

Declaration

public static byte[] getBytes(InputStream in, int length, int BUF_SIZE) throws IOException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2005, 2013 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:// w w w . j a  va  2  s. c  om
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

import java.io.*;

public class Main {
    public static byte[] getBytes(InputStream in, int length, int BUF_SIZE) throws IOException {
        byte[] classbytes;
        int bytesread = 0;
        int readcount;
        try {
            if (length > 0) {
                classbytes = new byte[length];
                for (; bytesread < length; bytesread += readcount) {
                    readcount = in.read(classbytes, bytesread, length - bytesread);
                    if (readcount <= 0) /* if we didn't read anything */
                        break; /* leave the loop */
                }
            } else /* does not know its own length! */ {
                length = BUF_SIZE;
                classbytes = new byte[length];
                readloop: while (true) {
                    for (; bytesread < length; bytesread += readcount) {
                        readcount = in.read(classbytes, bytesread, length - bytesread);
                        if (readcount <= 0) /* if we didn't read anything */
                            break readloop; /* leave the loop */
                    }
                    byte[] oldbytes = classbytes;
                    length += BUF_SIZE;
                    classbytes = new byte[length];
                    System.arraycopy(oldbytes, 0, classbytes, 0, bytesread);
                }
            }
            if (classbytes.length > bytesread) {
                byte[] oldbytes = classbytes;
                classbytes = new byte[bytesread];
                System.arraycopy(oldbytes, 0, classbytes, 0, bytesread);
            }
        } finally {
            try {
                in.close();
            } catch (IOException ee) {
                // nothing to do here
            }
        }
        return classbytes;
    }
}

Related

1. getBytes(InputStream in)
2. getBytes(InputStream in)
3. getBytes(InputStream in)
4. getBytes(InputStream in)
5. getBytes(InputStream in)
6. getBytes(InputStream in, OutputStream out)
7. getBytes(InputStream input)
8. getBytes(InputStream input)
9. getBytes(InputStream input)