Growing ByteBuffer

Question

Has anyone has ever seen an implementation of java.nio.ByteBuffer that will grow dynamically if a putX() call overruns the capacity?

The reason I want to do it this way

Answer 1

Have a look at Mina IOBuffer https://mina.apache.org/mina-project/userguide/ch8-iobuffer/ch8-iobuffer.html which is a drop in replacement (it wraps the ByteBuffer)

However , I suggest you allocate more than you need and don't worry about it too much. If you allocate a buffer (esp a direct buffer) the OS gives it virtual memory but it only uses physical memory when its actually used. Virtual memory should be very cheap.