Examples of java.nio.ByteBuffer.asReadOnlyBuffer()

java.nio.ByteBuffer.asReadOnlyBuffer()
Returns a readonly buffer that shares content with this buffer.
The returned buffer is guaranteed to be a new instance, even this buffer is readonly itself. The new buffer's position, limit, capacity and mark are the same as this buffer.

The new buffer shares content with this buffer, which means this buffer's change of content will be visible to the new buffer. The two buffer's position, limit and mark are independent.
@return A readonly version of this buffer.

                           channelId);
                return;
            }
            byte[] msgBytes = msg.getBytes(msg.limit() - msg.position());
            ByteBuffer buf = ByteBuffer.wrap(msgBytes);
            channel.receivedMessage(buf.asReadOnlyBuffer());
        }


        /**
         * {@inheritDoc}
         */

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            throw new NullPointerException("Null bufferArray argument");
        if (!(isBufferArray(bufferArray)))
            throw new IllegalArgumentException("The passed argument is not a buffer array");
        ByteBuffer bb = ((DirectDataStorages.DirectStorage)((AbstractBufferArray)bufferArray).storage).bb;
        ByteOrder o = bb.order();
        return bufferArray.isImmutable() ? bb.asReadOnlyBuffer().order(o) : bb.duplicate().order(o);
    }


    /**
     * Returns the start offset in the buffer returned by {@link #getByteBuffer(Array)} call,
     * corresponding to the first element of the passed AlgART array.

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    //for the testHashCode() method of readonly subclasses
    protected void readOnlyHashCode() {
        //create a new buffer initiated with some data 
        ByteBuffer buf = ByteBuffer.allocate(BUFFER_LENGTH);
        loadTestData1(buf);
        buf = buf.asReadOnlyBuffer();
        buf.clear();
        ByteBuffer readonly = buf.asReadOnlyBuffer();
        ByteBuffer duplicate = buf.duplicate();
        assertEquals(buf.hashCode(),readonly.hashCode());
        duplicate.position(buf.capacity()/2);

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    public void test_read_LByteBuffer_readOnlyBuf() throws Exception {
        // regression test for Harmony-754
        ByteBuffer c = ByteBuffer.allocate(1);
        DatagramChannel channel = DatagramChannel.open();
        try{
            channel.read(c.asReadOnlyBuffer());
            fail("Should throw NotYetConnectedException");
        } catch (NotYetConnectedException e){
            // expected
        }
        channel.connect(localAddr1);

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        } catch (NotYetConnectedException e){
            // expected
        }
        channel.connect(localAddr1);
        try{
            channel.read(c.asReadOnlyBuffer());
            fail("Should throw IllegalArgumentException");
        } catch (IllegalArgumentException e){
            // expected
        }
    }

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  }


  @Override
  public ByteBuffer asReadOnlyByteBuffer() {
    ByteBuffer byteBuffer = ByteBuffer.wrap(toByteArray());
    return byteBuffer.asReadOnlyBuffer();
  }


  @Override
  public List<ByteBuffer> asReadOnlyByteBufferList() {
    // Walk through the list of LiteralByteString's that make up this

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            MyJapi.f524bb1(MyJapi.f424bb1());
            assert (nf424bb + 1 == f424bb.asDoubleBuffer().get());


            out.println("\ncalling f531bb1(f431bb1())");
            final ByteBuffer f431bb = MyJapi.f431bb1().order(ByteOrder.nativeOrder());
            final byte nf431bb = f431bb.asReadOnlyBuffer().get();
            MyJapi.f531bb1(f431bb);
            assert (nf431bb != f431bb.asReadOnlyBuffer().get());


            out.println("\ncalling f532bb1(f432bb1())");
            final ByteBuffer f432bb = MyJapi.f432bb1().order(ByteOrder.nativeOrder());

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            out.println("\ncalling f531bb1(f431bb1())");
            final ByteBuffer f431bb = MyJapi.f431bb1().order(ByteOrder.nativeOrder());
            final byte nf431bb = f431bb.asReadOnlyBuffer().get();
            MyJapi.f531bb1(f431bb);
            assert (nf431bb != f431bb.asReadOnlyBuffer().get());


            out.println("\ncalling f532bb1(f432bb1())");
            final ByteBuffer f432bb = MyJapi.f432bb1().order(ByteOrder.nativeOrder());
            final byte nf432bb = f432bb.asReadOnlyBuffer().get();
            MyJapi.f532bb1(f432bb);

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            MyJapi.f531bb1(f431bb);
            assert (nf431bb != f431bb.asReadOnlyBuffer().get());


            out.println("\ncalling f532bb1(f432bb1())");
            final ByteBuffer f432bb = MyJapi.f432bb1().order(ByteOrder.nativeOrder());
            final byte nf432bb = f432bb.asReadOnlyBuffer().get();
            MyJapi.f532bb1(f432bb);
            assert (nf432bb + 1 == f432bb.asReadOnlyBuffer().get());


            out.println("\ncalling f533bb1(f433bb1())");
            final ByteBuffer f433bb = MyJapi.f433bb1().order(ByteOrder.nativeOrder());

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            out.println("\ncalling f532bb1(f432bb1())");
            final ByteBuffer f432bb = MyJapi.f432bb1().order(ByteOrder.nativeOrder());
            final byte nf432bb = f432bb.asReadOnlyBuffer().get();
            MyJapi.f532bb1(f432bb);
            assert (nf432bb + 1 == f432bb.asReadOnlyBuffer().get());


            out.println("\ncalling f533bb1(f433bb1())");
            final ByteBuffer f433bb = MyJapi.f433bb1().order(ByteOrder.nativeOrder());
            final byte nf433bb = f433bb.asReadOnlyBuffer().get();
            MyJapi.f533bb1(f433bb);

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