Java ByteBuffer Capacity increaseCapacity(ByteBuffer buffer, int size)

Description

Increase ByteBuffer's capacity.

License

Apache License

Parameter

Parameter	Description
buffer	the ByteBuffer want to increase capacity
size	increased size

Exception

Parameter	Description
IllegalArgumentException	if size less than 0 or buffer is null

Return

increased capacity ByteBuffer

Declaration

public static ByteBuffer increaseCapacity(ByteBuffer buffer, int size) throws IllegalArgumentException 

Method Source Code

//package com.java2s;
/*//w w  w  .j  a  v  a2  s  .c om
 * Copyright 2004-2005 the original author or authors.
 *
 * 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.
 */

import java.nio.ByteBuffer;

public class Main {
    /**
     * Increase ByteBuffer's capacity.
     * 
     * @param buffer
     *       the ByteBuffer want to increase capacity
     * @param size
     *       increased size
     * @return
     *      increased capacity ByteBuffer
     * @throws IllegalArgumentException
     *       if size less than 0 or buffer is null
     */
    public static ByteBuffer increaseCapacity(ByteBuffer buffer, int size) throws IllegalArgumentException {
        if (buffer == null)
            throw new IllegalArgumentException("buffer is null");
        if (size < 0)
            throw new IllegalArgumentException("size less than 0");

        int capacity = buffer.capacity() + size;
        ByteBuffer result = allocate(capacity, buffer.isDirect());
        buffer.flip();
        result.put(buffer);
        return result;
    }

    /**
     * Allocate ByteBuffer.
     * 
     * @param capacity
     *       ByteBuffer capacity
     * @param direct
     *       allocate DirectByteBuffer
     * @return
     *       allocated ByteBuffer
     * @throws IllegalArgumentException
     *       if capacity is negative
     */
    public static ByteBuffer allocate(int capacity, boolean direct) throws IllegalArgumentException {
        if (capacity < 0)
            throw new IllegalArgumentException("capacity can't be negative");
        return direct ? ByteBuffer.allocateDirect(capacity) : ByteBuffer.allocate(capacity);
    }
}

Related

1. ensureCapacity(ByteBuffer original, int newCapacity)
2. expand(ByteBuffer buffer, int newCapacity)
3. getByteBuffer(int capacity)
4. grow(ByteBuffer buffer, int minCapacityIncrease)
5. growBuffer(ByteBuffer b, int newCapacity)
6. leByteBuffer(int capacity)
7. nativeByteBuffer(int capacity)
8. newByteBuffer(int margin, int capacity)
9. parseToByteBuffer(int capacity, String value)