Example usage for java.text NumberFormat parse

Introduction

In this page you can find the example usage for java.text NumberFormat parse.

Prototype

public abstract Number parse(String source, ParsePosition parsePosition);

Source Link

Document

Returns a Long if possible (e.g., within the range [Long.MIN_VALUE, Long.MAX_VALUE] and with no decimals), otherwise a Double.

Usage

From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to an int primitive.
 * //from   w  w w  .j a  v a 2 s. com
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)
 * @return the converted Integer value.
 */
public static Integer formatInt(String value, Locale locale) {
    Integer result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Integer.MIN_VALUE && num.doubleValue() <= Integer.MAX_VALUE) {
                result = new Integer(num.intValue());
            }
        }
    }

    return result;
}

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From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to a long primitive.
 * //from   w  ww  . j a va2 s.  c o m
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)
 * @return the converted Long value.
 */
public static Long formatLong(String value, Locale locale) {
    Long result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Long.MIN_VALUE && num.doubleValue() <= Long.MAX_VALUE) {
                result = new Long(num.longValue());
            }
        }
    }

    return result;
}

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From source file:com.almalence.util.Util.java

public static boolean isNumeric(String str) {
    NumberFormat formatter = NumberFormat.getInstance();
    ParsePosition pos = new ParsePosition(0);
    formatter.parse(str, pos);
    return str.length() == pos.getIndex();
}

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From source file:com.haulmont.chile.core.datatypes.impl.NumberDatatype.java

protected Number parse(String value, NumberFormat format) throws ParseException {
    ParsePosition pos = new ParsePosition(0);
    Number res = format.parse(value.trim(), pos);
    if (pos.getIndex() != value.length()) {
        throw new ParseException(String.format("Unparseable number: \"%s\"", value), pos.getErrorIndex());
    }/* w  w w. j  a  v  a 2 s.c  om*/
    return res;
}

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From source file:org.netxilia.api.impl.value.NumberParser.java

@Override
public IGenericValue parse(String text) {
    String input = preprocess(text);
    ParsePosition pp = new ParsePosition(0);

    for (NumberFormat format : this.formats) {
        pp.setIndex(0);/*  ww w  .  j a  v  a  2  s .  com*/
        Number number = format.parse(input, pp);
        if (number != null && input.length() == pp.getIndex()) {
            return new NumberValue(number.doubleValue());
        }
    }

    return null;
}

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From source file:org.springframework.binding.convert.converters.FormattedStringToNumber.java

@SuppressWarnings("unchecked")
protected Object toObject(String string, Class<?> targetClass) throws Exception {
    ParsePosition parsePosition = new ParsePosition(0);
    NumberFormat format = numberFormatFactory.getNumberFormat();
    Number number = format.parse(string, parsePosition);
    if (number == null) {
        // no object could be parsed
        throw new InvalidFormatException(string, getPattern(format));
    }//from w w w .ja va  2  s . c  o  m
    if (!lenient) {
        if (string.length() != parsePosition.getIndex()) {
            // indicates a part of the string that was not parsed; e.g. ".5" in 1234.5 when parsing an Integer
            throw new InvalidFormatException(string, getPattern(format));
        }
    }
    return convertToNumberClass(number, (Class<? extends Number>) targetClass);
}

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From source file:org.createnet.raptor.models.data.types.NumberRecord.java

@Override
public Number parseValue(Object value) {
    try {//  w  ww . j a v a2s .co m

        if (value instanceof Number) {
            return (Number) value;
        }

        if (value instanceof JsonNode) {

            JsonNode node = (JsonNode) value;

            if (node.isNumber()) {

                if (node.isInt() || node.isShort()) {
                    return (Number) node.asInt();
                }

                if (node.isDouble() || node.isFloat()) {
                    return (Number) node.asDouble();
                }

                if (node.isLong()) {
                    return (Number) node.asLong();
                }
            }

            if (node.isTextual()) {
                value = node.asText();
            }

        }

        NumberFormat formatter = NumberFormat.getInstance();
        ParsePosition pos = new ParsePosition(0);
        Number numVal = formatter.parse((String) value, pos);

        return numVal;
    } catch (Exception e) {
        throw new RaptorComponent.ParserException(e);
    }
}

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From source file:de.unioninvestment.eai.portal.portlet.crud.scripting.domain.container.rest.ValueConverter.java

private Object convertStringToValue(Class<?> targetClass, String format, Locale locale, String value) {

    try {/* ww  w . j a  v  a2 s .c o m*/
        Locale effectiveLocale = locale != null ? locale : Locale.US;
        NumberFormat nf = new NumberFormatter(format).getNumberFormat(effectiveLocale);
        Number number = null;
        if (targetClass == BigDecimal.class) {
            ((DecimalFormat) nf).setParseBigDecimal(true);
            number = nf.parse(value, new ParsePosition(0));
        } else {
            number = nf.parse(value);
        }
        return convertNumberToNumber(targetClass, number);

    } catch (ParseException e) {
        // continue to exception
    }

    throw new IllegalArgumentException("Cannot convert to " + targetClass.getSimpleName() + ": " + value);
}

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From source file:org.orcid.core.cli.MigrateFundingAmountToANumericValue.java

private BigDecimal getAmountAsBigDecimal(String amount, String currencyCode, Locale locale) throws Exception {
    try {/*from  w  w w . ja v  a2s .  c o m*/
        ParsePosition parsePosition = new ParsePosition(0);
        NumberFormat numberFormat = NumberFormat.getInstance(locale);
        Number number = null;
        if (!PojoUtil.isEmpty(currencyCode)) {
            Currency currency = Currency.getInstance(currencyCode);
            String currencySymbol = currency.getSymbol();
            number = numberFormat.parse(amount.replace(currencySymbol, StringUtils.EMPTY), parsePosition);
        } else {
            number = numberFormat.parse(amount, parsePosition);
        }
        if (parsePosition.getIndex() != amount.length())
            throw new Exception("Unable to parse amount into BigDecimal");
        return new BigDecimal(number.toString());
    } catch (Exception e) {
        throw e;
    }
}

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From source file:com.examples.with.different.packagename.testcarver.NumberConverter.java

/**
 * Convert a String into a <code>Number</code> object.
 * @param sourceType TODO//  w  ww. j  av a2s .c o m
 * @param targetType The type to convert the value to
 * @param value The String date value.
 * @param format The NumberFormat to parse the String value.
 *
 * @return The converted Number object.
 * @throws ConversionException if the String cannot be converted.
 */
private Number parse(Class sourceType, Class targetType, String value, NumberFormat format) {
    ParsePosition pos = new ParsePosition(0);
    Number parsedNumber = format.parse(value, pos);
    if (pos.getErrorIndex() >= 0 || pos.getIndex() != value.length() || parsedNumber == null) {
        String msg = "Error converting from '" + toString(sourceType) + "' to '" + toString(targetType) + "'";
        if (format instanceof DecimalFormat) {
            msg += " using pattern '" + ((DecimalFormat) format).toPattern() + "'";
        }
        if (locale != null) {
            msg += " for locale=[" + locale + "]";
        }
        throw new ConversionException(msg);
    }
    return parsedNumber;
}

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