DynamicCompositeByteBuf { public boolean hasArray() { return buffers.size() == 1 && buffers.peekFirst().hasArray(); } DynamicCompositeByteBuf();  DynamicCompositeByteBuf(int capacity);  DynamicCompositeByteBuf(ByteBuf buf);  DynamicCompositeByteBuf(ByteBuf[] bufs, int offset, int len); int readableBytes(); boolean isEmpty(); boolean hasArray(); byte[] array(); int arrayOffset(); int readerIndex(); boolean isReadable(); ByteBuf nettyByteBuf(); void addBuffer(ByteBuf buffer); ByteBuf readRetainedSlice(int length); ByteBuf retainedSlice(int length); void skipBytes(int length); DynamicCompositeByteBuf readBytes(byte[] dst); DynamicCompositeByteBuf readBytes(byte[] dst, int dstIndex, int length); byte readByte(); short readUnsignedByte(); short readShort(); short readShortLE(); int readUnsignedShort(); int readUnsignedShortLE(); int readInt(); int readIntLE(); long readLong(); long readLongLE(); char readChar(); float readFloat(); float readFloatLE(); double readDouble(); double readDoubleLE(); ByteOrder order(); void release(); @Override String toString();  }
@Test public void testHasArray() { ByteBuf buf1 = Unpooled.wrappedBuffer("hello1".getBytes()); DynamicCompositeByteBuf compositeByteBuf = new DynamicCompositeByteBuf(buf1); Assert.assertTrue(compositeByteBuf.hasArray() == true); ByteBuf buf2 = Unpooled.wrappedBuffer(buf1); compositeByteBuf.addBuffer(buf2); Assert.assertTrue(compositeByteBuf.hasArray() == false); }