Examples of java.io.InputStream.markSupported()

java.io.InputStream.markSupported()
Answers a boolean indicating whether or not this InputStream supports mark() and reset(). This class provides a default implementation which answers false. @return true if mark() and reset() are supported,false otherwise.

                    return wrapped.available();
                }


                @Override
                public boolean markSupported() {
                    return wrapped.markSupported();
                }


                @Override
                public void mark(int readlimit) {
                    wrapped.mark(readlimit);

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    public void testMarkAndReset() throws Exception {
        int position = 0;
        int readlimit = 10;
        InputStream input = new TestNullInputStream(100, true, false);
        
        assertTrue("Mark Should be Supported", input.markSupported());


        // No Mark
        try {
            input.reset();
            fail("Read limit exceeded, expected IOException ");

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    /**
     * Test <code>mark()</code> not supported.
     */
    public void testMarkNotSupported() throws Exception {
        InputStream input = new TestNullInputStream(100, false, true);
        assertFalse("Mark Should NOT be Supported", input.markSupported());


        try {
            input.mark(5);
            fail("mark() should throw UnsupportedOperationException");
        } catch (UnsupportedOperationException e) {

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    }


    public void testMarkResetAfterReadWithoutBOM() throws Exception {
        byte[] data = new byte[] { 'A', 'B', 'C', 'D' };
        InputStream in = new BOMInputStream(createDataStream(data, false));
        assertTrue(in.markSupported());


        in.read();
        in.mark(10);


        in.read();

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    }


    public void testMarkResetAfterReadWithBOM() throws Exception {
        byte[] data = new byte[] { 'A', 'B', 'C', 'D' };
        InputStream in = new BOMInputStream(createDataStream(data, true));
        assertTrue(in.markSupported());


        in.read();
        in.mark(10);


        in.read();

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    }


    public void testMarkResetBeforeReadWithoutBOM() throws Exception {
        byte[] data = new byte[] { 'A', 'B', 'C', 'D' };
        InputStream in = new BOMInputStream(createDataStream(data, false));
        assertTrue(in.markSupported());


        in.mark(10);


        in.read();
        in.read();

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    }


    public void testMarkResetBeforeReadWithBOM() throws Exception {
        byte[] data = new byte[] { 'A', 'B', 'C', 'D' };
        InputStream in = new BOMInputStream(createDataStream(data, true));
        assertTrue(in.markSupported());


        in.mark(10);


        in.read();
        in.read();

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        InputStream in = record.getStream();
        try {
            // test whether mark and reset works
            assertTrue(in instanceof DbInputStream);
            in = new BufferedInputStream(in);
            assertTrue(in.markSupported());
            in.mark(data.length);
            while (-1 != in.read()) {
                // loop
            }
            assertTrue(in.markSupported());

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            assertTrue(in.markSupported());
            in.mark(data.length);
            while (-1 != in.read()) {
                // loop
            }
            assertTrue(in.markSupported());
            try {
                in.reset();
            } catch (Exception e) {
                fail("Unexpected exception while resetting input stream: " + e.getMessage());
            }

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            log.warn("No content length specified for stream data.  " +
                     "Stream contents will be buffered in memory and could result in " +
                     "out of memory errors.");
        }


        if (!input.markSupported()) {
            input = new RepeatableInputStream(input, Constants.DEFAULT_STREAM_BUFFER_SIZE);
        }


        if (metadata.getContentMD5() == null) {
            /*

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