new Dataprogram接收到的数据byte数组存不下会怎么样

Question

如图，如果发送的数据超过了buffer.length的长度，数据存不下会怎样呢，还有这个方法的作用原理

Answer 1

主要是看setData的说明，你就明白了。

    /**
     * Set the data buffer for this packet. This sets the
     * data, length and offset of the packet.
     *
     * @param buf the buffer to set for this packet
     *
     * @param offset the offset into the data
     *
     * @param length the length of the data
     *       and/or the length of the buffer used to receive data
     *
     * @exception NullPointerException if the argument is null
     *
     * @see #getData
     * @see #getOffset
     * @see #getLength
     *
     * @since 1.2
     */
    public synchronized void setData(byte[] buf, int offset, int length)