Examples of java.text.Format.parseObject()

java.text.Format.parseObject()
Parses text from a string to produce an object.
The method attempts to parse text starting at the index given by pos. If parsing succeeds, then the index of pos is updated to the index after the last character used (parsing does not necessarily use all characters up to the end of the string), and the parsed object is returned. The updated pos can be used to indicate the starting point for the next call to this method. If an error occurs, then the index of pos is not changed, the error index of pos is set to the index of the character where the error occurred, and null is returned. @param source A String, part of which should be parsed. @param pos A ParsePosition object with index and errorindex information as described above. @return An Object parsed from the string. In case oferror, returns null. @exception NullPointerException if pos is null.

  }
  public void testFormatThenParse() throws ParseException {
    Format dateFormatter = new ERXOrdinalDateFormatter("d'th 'MMM' 'yyyy' 'HH':'mm':'ss");
    NSTimestamp timestamp = new NSTimestamp(new GregorianCalendar(2000, 0, 1).getTime());
    String formatted = dateFormatter.format(timestamp);
    NSTimestamp parsed = (NSTimestamp) dateFormatter.parseObject(formatted);
    String formatted2 = dateFormatter.format(parsed);
    assertEquals(formatted, formatted2);
  }
}

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    //-----------------------------------------------------------------------
    @Test
    public void test_toFormat_parseObject_String() throws Exception {
        DateTimeFormatter test = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        Format format = test.toFormat();
        DateTimeBuilder result = (DateTimeBuilder) format.parseObject("ONE30");
        assertEquals(result.getLong(DAY_OF_MONTH), 30L);
    }


    @Test(expectedExceptions=ParseException.class)
    public void test_toFormat_parseObject_String_parseError() throws Exception {

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    @Test(expectedExceptions=ParseException.class)
    public void test_toFormat_parseObject_String_parseError() throws Exception {
        DateTimeFormatter test = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        Format format = test.toFormat();
        try {
            format.parseObject("ONEXXX");
        } catch (ParseException ex) {
            assertEquals(ex.getMessage().contains("ONEXXX"), true);
            assertEquals(ex.getErrorOffset(), 3);
            throw ex;
        }

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    @Test(expectedExceptions=ParseException.class)
    public void test_toFormat_parseObject_String_parseErrorLongText() throws Exception {
        DateTimeFormatter test = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        Format format = test.toFormat();
        try {
            format.parseObject("ONEXXX67890123456789012345678901234567890123456789012345678901234567890123456789");
        } catch (DateTimeParseException ex) {
            assertEquals(ex.getMessage().contains("ONEXXX6789012345678901234567890123456789012345678901234567890123..."), true);
            assertEquals(ex.getParsedString(), "ONEXXX67890123456789012345678901234567890123456789012345678901234567890123456789");
            assertEquals(ex.getErrorIndex(), 3);
            throw ex;

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    @Test(expectedExceptions=NullPointerException.class)
    public void test_toFormat_parseObject_String_null() throws Exception {
        DateTimeFormatter test = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        Format format = test.toFormat();
        format.parseObject((String) null);
    }


    //-----------------------------------------------------------------------
    @Test
    public void test_toFormat_parseObject_StringParsePosition() throws Exception {

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    @Test
    public void test_toFormat_parseObject_StringParsePosition() throws Exception {
        DateTimeFormatter test = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        Format format = test.toFormat();
        ParsePosition pos = new ParsePosition(0);
        DateTimeBuilder result = (DateTimeBuilder) format.parseObject("ONE30XXX", pos);
        assertEquals(pos.getIndex(), 5);
        assertEquals(pos.getErrorIndex(), -1);
        assertEquals(result.getLong(DAY_OF_MONTH), 30L);
    }

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    @Test
    public void test_toFormat_parseObject_StringParsePosition_parseError() throws Exception {
        DateTimeFormatter test = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        Format format = test.toFormat();
        ParsePosition pos = new ParsePosition(0);
        TemporalAccessor result = (TemporalAccessor) format.parseObject("ONEXXX", pos);
        assertEquals(pos.getIndex(), 0);  // TODO: is this right?
        assertEquals(pos.getErrorIndex(), 3);
        assertEquals(result, null);
    }

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    public void test_toFormat_parseObject_StringParsePosition_nullString() throws Exception {
        // SimpleDateFormat has this behavior
        DateTimeFormatter test = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        Format format = test.toFormat();
        ParsePosition pos = new ParsePosition(0);
        format.parseObject((String) null, pos);
    }


    @Test(expectedExceptions=NullPointerException.class)
    public void test_toFormat_parseObject_StringParsePosition_nullParsePosition() throws Exception {
        // SimpleDateFormat has this behavior

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    @Test(expectedExceptions=NullPointerException.class)
    public void test_toFormat_parseObject_StringParsePosition_nullParsePosition() throws Exception {
        // SimpleDateFormat has this behavior
        DateTimeFormatter test = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        Format format = test.toFormat();
        format.parseObject("ONE30", (ParsePosition) null);
    }


    @Test
    public void test_toFormat_parseObject_StringParsePosition_invalidPosition_tooBig() throws Exception {
        // SimpleDateFormat has this behavior

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    public void test_toFormat_parseObject_StringParsePosition_invalidPosition_tooBig() throws Exception {
        // SimpleDateFormat has this behavior
        DateTimeFormatter dtf = fmt.withLocale(Locale.ENGLISH).withDecimalStyle(DecimalStyle.STANDARD);
        ParsePosition pos = new ParsePosition(6);
        Format test = dtf.toFormat();
        assertNull(test.parseObject("ONE30", pos));
        assertTrue(pos.getErrorIndex() >= 0);
    }


    @Test
    public void test_toFormat_parseObject_StringParsePosition_invalidPosition_tooSmall() throws Exception {

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