java - Java的ByteBuffer的深拷贝duplicate()

Question

java.nio.ByteBuffer#duplicate() 返回一个共享旧缓冲区内容的新字节缓冲区。对旧缓冲区内容的更改将在新缓冲区中可见，反之亦然。如果我想要字节缓冲区的深拷贝怎么办？

Answer 1

我认为深拷贝不需要涉及byte[]。请尝试以下操作:

public static ByteBuffer clone(ByteBuffer original) {
       ByteBuffer clone = ByteBuffer.allocate(original.capacity());
       original.rewind();//copy from the beginning
       clone.put(original);
       original.rewind();
       clone.flip();
       return clone;
}