Java DecimalFormat.setParseBigDecimal方法代码示例

import java.text.DecimalFormat; //导入方法依赖的package包/类
private void build() {
    try {

        if (typeQualifier != null) {
            buildQualifiedNumber();
            return;
        }

        Number value;
        if (number.contains(".")) {
            DecimalFormat decimalFormat = (DecimalFormat) DecimalFormat.getInstance(Locale.US);
            decimalFormat.setParseBigDecimal(true);

            int decSymbolIndex = number.lastIndexOf(".");
            if (decSymbolIndex > -1) {
                int precision = number.substring(decSymbolIndex, number.length() - 1).length();
                decimalFormat.setMaximumFractionDigits(precision);
            }

            value = decimalFormat.parse(number);
        } else {
            value = NumberFormat.getInstance(locale).parse(number);
        }

        set(value);
    } catch (ParseException e) {
        throw new RuntimeException(String.format("Invalid number '%s'", number));
    }
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
private static BigDecimal convertToBigDecimal(Object o) {
    DecimalFormat df = new DecimalFormat();
    df.setParseBigDecimal(true);
    try {
        return (BigDecimal) df.parse(o.toString());
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
@Override
public NumberFormat getNumberFormat(Locale locale) {
	NumberFormat format = NumberFormat.getInstance(locale);
	if (!(format instanceof DecimalFormat)) {
		if (this.pattern != null) {
			throw new IllegalStateException("Cannot support pattern for non-DecimalFormat: " + format);
		}
		return format;
	}
	DecimalFormat decimalFormat = (DecimalFormat) format;
	decimalFormat.setParseBigDecimal(true);
	if (this.pattern != null) {
		decimalFormat.applyPattern(this.pattern);
	}
	return decimalFormat;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Regardless of the default locale, comma ('.') is used as decimal separator
 *
 * @param source
 * @return
 * @throws ParseException
 */
public BigDecimal parse(String source) throws ParseException {
    DecimalFormatSymbols symbols = new DecimalFormatSymbols();
    symbols.setDecimalSeparator('.');
    DecimalFormat format = new DecimalFormat("#.#", symbols);
    format.setParseBigDecimal(true);
    return (BigDecimal) format.parse(source);
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
@Override
protected Format getFormat(String pattern, Locale locale) {
    DecimalFormat format = (DecimalFormat) super.getFormat(pattern,
            locale);
    format.setMaximumIntegerDigits(NUMBER_OF_INTEGER_PLACES);
    format.setMaximumFractionDigits(NUMBER_OF_DECIMAL_PLACES);
    // avoid lost precision due to parsing to double:
    format.setParseBigDecimal(true);
    return format;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
@Override
protected NumberFormat getNumberFormat(Locale locale) {
	DecimalFormat format = (DecimalFormat) NumberFormat.getCurrencyInstance(locale);
	format.setParseBigDecimal(true);
	format.setMaximumFractionDigits(this.fractionDigits);
	format.setMinimumFractionDigits(this.fractionDigits);
	if (this.roundingMode != null && roundingModeOnDecimalFormat) {
		format.setRoundingMode(this.roundingMode);
	}
	if (this.currency != null) {
		format.setCurrency(this.currency);
	}
	return format;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
/**
 * Converts {@code inputValue} to bigdecimal value
 *
 * @param inputValue string to be converted to bigdecimal
 * @param scale      number of digits right of decimal point
 * @return converted value of {@code inputValue} to bigdecimal
 * if {@code inputValue} is null return null
 * @throws ParseException if the specified string {@code inputValue}
 *                        cannot be parsed.
 */
public static BigDecimal toBigdecimal(String inputValue, int scale) {
    if (inputValue == null)
        return null;
    DecimalFormat decimalFormat = new DecimalFormat();
    decimalFormat.setParseBigDecimal(true);
    try {
        return ((BigDecimal) decimalFormat.parse(inputValue)).setScale(scale, BigDecimal.ROUND_DOWN);
    } catch (ParseException e) {
        e.printStackTrace();
    }
    return null;
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
@Test
public void amount() throws ParseException {
    Money money = createObjectFromHtml(Money.class);
    DecimalFormat format = new DecimalFormat("0,000.00");
    format.setParseBigDecimal(true);
    BigDecimal expected = (BigDecimal) format.parse("50,000.00");
    assertEquals(money.amount, expected);
}
 

import java.text.DecimalFormat; //导入方法依赖的package包/类
AbstractDishScraper() {
    decimalFormat = (DecimalFormat) NumberFormat.getInstance(Locale.GERMANY);
    decimalFormat.setParseBigDecimal(true);
}