external.org.apache.commons.lang3.NumberUtils Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of ratel-api Show documentation

ratel api,used for developer on ratel system,an extension for xposed framewrok,ratel api compatable with original xposed framework

There is a newer version: 1.3.6

Show newest version

package external.org.apache.commons.lang3;

public class NumberUtils {
    /**
     * Convert a String to a double, returning
     * 0.0d if the conversion fails.
     *
     * If the string str is null,
     * 0.0d is returned.
     *
     *      *   NumberUtils.toDouble(null)   = 0.0d
     *   NumberUtils.toDouble("")     = 0.0d
     *   NumberUtils.toDouble("1.5")  = 1.5d
     * 
     *
     * @param str the string to convert, may be null
     * @return the double represented by the string, or 0.0d
     * if conversion fails
     * @since 2.1
     */
    public static double toDouble(final String str) {
        return toDouble(str, 0.0d);
    }

    /**
     * Convert a String to a double, returning a
     * default value if the conversion fails.
     *
     * If the string str is null, the default
     * value is returned.
     *
     *      *   NumberUtils.toDouble(null, 1.1d)   = 1.1d
     *   NumberUtils.toDouble("", 1.1d)     = 1.1d
     *   NumberUtils.toDouble("1.5", 0.0d)  = 1.5d
     * 
     *
     * @param str          the string to convert, may be null
     * @param defaultValue the default value
     * @return the double represented by the string, or defaultValue
     * if conversion fails
     * @since 2.1
     */
    public static double toDouble(final String str, final double defaultValue) {
        if (str == null) {
            return defaultValue;
        }
        try {
            return Double.parseDouble(str);
        } catch (final NumberFormatException nfe) {
            return defaultValue;
        }
    }

    /**
     * Convert a String to an int, returning
     * zero if the conversion fails.
     *
     * If the string is null, zero is returned.
     *
     *      *   NumberUtils.toInt(null) = 0
     *   NumberUtils.toInt("")   = 0
     *   NumberUtils.toInt("1")  = 1
     * 
     *
     * @param str the string to convert, may be null
     * @return the int represented by the string, or zero if
     * conversion fails
     * @since 2.1
     */
    public static int toInt(final String str) {
        return toInt(str, 0);
    }

    /**
     * Convert a String to an int, returning a
     * default value if the conversion fails.
     *
     * If the string is null, the default value is returned.
     *
     *      *   NumberUtils.toInt(null, 1) = 1
     *   NumberUtils.toInt("", 1)   = 1
     *   NumberUtils.toInt("1", 0)  = 1
     * 
     *
     * @param str          the string to convert, may be null
     * @param defaultValue the default value
     * @return the int represented by the string, or the default if conversion fails
     * @since 2.1
     */
    public static int toInt(final String str, final int defaultValue) {
        if (str == null) {
            return defaultValue;
        }
        try {
            return Integer.parseInt(str);
        } catch (final NumberFormatException nfe) {
            return defaultValue;
        }
    }

    public static long toLong(final String str, final int defaultValue) {
        if (str == null) {
            return defaultValue;
        }
        try {
            return Long.parseLong(str);
        } catch (final NumberFormatException nfe) {
            return defaultValue;
        }
    }
}