Examples of java.io.Reader.skip()

java.io.Reader.skip()
Skips count number of characters in this Reader. Subsequent read()'s will not return these characters unless reset() is used. This method may perform multiple reads to read count characters. @param count how many characters should be passed over @return how many characters were successfully passed over @throws IOException If the Reader is closed when the call is made or if an IO error occurs during the operation.

        reader.reset();
        assertEquals(1, reader.read(array, 1, 1));
        assertEquals('o', array[0]);
        assertEquals('o', array[1]);
        assertEquals('e', array[2]);
        assertEquals(2, reader.skip(2));
        assertEquals(' ', reader.read());
        
        assertEquals(true, reader.ready());
        reader.close();
        assertEquals(true, reader.ready());

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        assertEquals(0, reader.read(array, 0, 0));
        assertEquals(0, array[0]);
        assertEquals(0, array[1]);
        assertEquals(0, array[2]);
        
        reader.skip(9);
        assertEquals(-1, reader.read(array, 0, 1));
        
        reader.reset();
        array = new char[30];
        assertEquals(9, reader.read(array, 0, 30));

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    public static long getContentLength(ClientResponse response) {
        // getContentLenght returns -1
        // contentLength = response.getContentLength();
        try {
            Reader reader = response.getReader();
            long actualSkip = reader.skip(Long.MAX_VALUE);
            return actualSkip;
        } catch (IOException e) {
        }
        return -1L;
    }

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            }
            long pos = 1;
            while (remaining > 0) {
                String str = clob.getSubString(
                        pos, Math.min(MAX_BSIZE, remaining));
                myReader.skip(Math.min(MAX_BSIZE, remaining) -1);
                pos += str.length();
                remaining -= str.length();
                // Avoid failure on the last char when Clob is modified.
                if (!modifyClob || remaining != 0) {
                    assertEquals(myReader.read(), str.charAt(str.length() -1));

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        stmt.close();
        assertEquals (sb.length(), clob.length());
        Reader r = clob.getCharacterStream();
        String newString = "this is a new string";
        //access reader before modifying the clob
        long l = r.skip (100);
        clob.setString (1001, newString);
        //l chars are already skipped
        long toSkip = 1000 - l;
        while (toSkip > 0) {
            long skipped = r.skip (toSkip);

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        long l = r.skip (100);
        clob.setString (1001, newString);
        //l chars are already skipped
        long toSkip = 1000 - l;
        while (toSkip > 0) {
            long skipped = r.skip (toSkip);
            toSkip -= skipped;
        }
        char [] newdata = new char [newString.length()];
        int len = r.read(newdata);
        assertEquals ("updated not reflected", newString,

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                            String.valueOf (clobData), sb.toString());
        r.close();
        //update before gettting the reader
        clob.setString (50, dummy);
        r = clob.getCharacterStream();
        r.skip (49);
        char [] newChars = new char [dummy.length()];
        r.read (newChars);
        assertEquals ("update not reflected", dummy,
                                    String.valueOf (newChars));
        //update again and see if stream is refreshed

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        r.read (newChars);
        assertEquals ("update not reflected", dummy,
                                    String.valueOf (newChars));
        //update again and see if stream is refreshed
        clob.setString (75, dummy);
        r.skip (75 - 50 - dummy.length());
        char [] testChars = new char [dummy.length()];
        r.read (testChars);
        assertEquals ("update not reflected", dummy,
                                    String.valueOf (newChars));
        r.close();

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        //try inserting some unicode string
        String unicodeStr = getUnicodeString();
        clob.setString (50, unicodeStr);
        char [] utf16Chars = new char [unicodeStr.length()];
        r = clob.getCharacterStream();
        r.skip(49);
        r.read(utf16Chars);
        assertEquals ("update not reflected",  unicodeStr,
                                    String.valueOf (utf16Chars));
        r.close();
        Writer w = clob.setCharacterStream (1);

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        for (int i = 0; i < 10000; i++) {
            w.write (dummy);
        }
        w.close();
        clob.setString (500, unicodeStr);
        r.skip (499);
        char [] unicodeChars = new char [unicodeStr.length()];
        r.read (unicodeChars);
        assertEquals ("update not reflected",  unicodeStr,
                                    String.valueOf (unicodeChars));
    }

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