ByteBuf buffer = ... // create a ByteBuf instance byte[] bytes = new byte[buffer.readableBytes()]; buffer.getBytes(0, bytes);
ByteBuf buffer = ... // create a ByteBuf instance byte[] bytes = new byte[10]; buffer.getBytes(0, bytes, 3, 5);In this example, we create a new byte array with a length of 10 and copy 5 bytes starting from position 0 in the buffer, into positions 3 to 7 in the byte array. These examples use the `ByteBuf` class from the `io.netty.buffer` package, which is a part of the Netty library for Java. This library provides high-performance network communication capabilities for Java applications.