Self expanding OutputStream with an underlying ByteBuffer

ByteBufferedOutputStream.java

/**

The MIT License (MIT)

Copyright (c) 2015 Daniel Manzke

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

*/
public class ByteBufferedOutputStream extends OutputStream{
	private ByteBuffer buffer;
	private boolean onHeap;
	private float increasing = DEFAULT_INCREASING_FACTOR;
	
	public static final float DEFAULT_INCREASING_FACTOR = 1.5f;
	
	public ByteBufferedOutputStream(int size) {
		this(size, DEFAULT_INCREASING_FACTOR, false);
	}
	
	public ByteBufferedOutputStream(int size, boolean onHeap) {
		this(size, DEFAULT_INCREASING_FACTOR, onHeap);
	}
	
	public ByteBufferedOutputStream(int size, float increasingBy) {
		this(size, increasingBy, false);
	}
	
	public ByteBufferedOutputStream(int size, float increasingBy, boolean onHeap) {
		if(increasingBy <= 1){
			throw new IllegalArgumentException("Increasing Factor must be greater than 1.0");
		}
		if(onHeap){
			buffer = ByteBuffer.allocate(size);
		}else{
			buffer = ByteBuffer.allocateDirect(size);	
		}
		this.onHeap = onHeap;
	}

	@Override
	public void write(byte[] b, int off, int len) throws IOException {
		int position = buffer.position();
		int limit = buffer.limit();
		
		long newTotal = position + len;
		if(newTotal > limit){
			int capacity = (int) (buffer.capacity()*increasing);
			while(capacity <= newTotal){
				capacity = (int) (capacity*increasing);
			}

			increase(capacity);
		}

		buffer.put(b, 0, len);
	}

	@Override
	public void write(int b) throws IOException {
		if(!buffer.hasRemaining()){
			increase((int) (buffer.capacity()*increasing));
		}
		buffer.put((byte)b);
	}
	
	protected void increase(int newCapacity){
		buffer.limit(buffer.position());
		buffer.rewind();
		
		ByteBuffer newBuffer;
		if(onHeap){
			newBuffer = ByteBuffer.allocate(newCapacity);
		}else{
			newBuffer = ByteBuffer.allocateDirect(newCapacity);	
		}
		
		newBuffer.put(buffer);
		buffer.clear();
		buffer = newBuffer;
	}
	
	public long size(){
		return buffer.position();
	}
	
	public long capacity(){
		return buffer.capacity();
	}
	
	public ByteBuffer buffer(){
		return buffer;
	}
}

You are totally right. ;) It was the starting for a set of multiple, overlayed, mapped Files. ;)

Could you please help me with the license for this? Thanks.

@Silvialenciu license is MIT

The MIT License (MIT)

Copyright (c) 2019 Daniel Manzke

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.