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:Main.java

public static void main(String[] args) throws Exception {
    NumberFormat numberFormat = NumberFormat.getNumberInstance();
    System.out.println(numberFormat.parse("123", new ParsePosition(0)));
}

From source file:Main.java

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

From source file:utils.StringManip.java

/**
 * Checks if a string is numeric// w w  w  .j ava  2  s. c o m
 *
 * @param str String to check if it is a number
 * @return True if the string is a number
 */
public static boolean isNumeric(String str) {
    NumberFormat formatter = NumberFormat.getInstance();
    ParsePosition pos = new ParsePosition(0);
    formatter.parse(str, pos);
    boolean IsANumber = str.length() == pos.getIndex();

    Pattern p = Pattern.compile("[0-9]");
    Matcher m = p.matcher(str);
    boolean containsNumber = m.matches();

    return IsANumber || containsNumber;
}

From source file:org.apache.maven.plugin.jira.JiraHelper.java

/**
 * Try to get a JIRA pid from the issue management URL.
 *
 * @param log     Used to tell the user what happened
 * @param issueManagementUrl The URL to the issue management system
 * @param client  The client used to connect to JIRA
 * @return The JIRA id for the project, or null if it can't be found
 *//*w  w  w  .  ja va 2s . c om*/
public static String getPidFromJira(Log log, String issueManagementUrl, HttpClient client) {
    String jiraId = null;
    GetMethod gm = new GetMethod(issueManagementUrl);

    String projectPage;
    try {
        client.executeMethod(gm);
        log.debug("Successfully reached JIRA.");
        projectPage = gm.getResponseBodyAsString();
    } catch (Exception e) {
        if (log.isDebugEnabled()) {
            log.error("Unable to reach the JIRA project page:", e);
        } else {
            log.error("Unable to reach the JIRA project page. Cause is: " + e.getLocalizedMessage());
        }
        return null;
    }

    int pidIndex = projectPage.indexOf(PID);

    if (pidIndex == -1) {
        log.error("Unable to extract a JIRA pid from the page at the url " + issueManagementUrl);
    } else {
        NumberFormat nf = NumberFormat.getInstance();
        Number pidNumber = nf.parse(projectPage, new ParsePosition(pidIndex + PID.length()));
        jiraId = Integer.toString(pidNumber.intValue());
        log.debug("Found the pid " + jiraId + " at " + issueManagementUrl);
    }
    return jiraId;
}

From source file:org.totschnig.myexpenses.Utils.java

/**
 * <a href="http://www.ibm.com/developerworks/java/library/j-numberformat/">http://www.ibm.com/developerworks/java/library/j-numberformat/</a>
 * @param strFloat parsed as float with the number format defined in the locale
 * @return the float retrieved from the string or null if parse did not succeed
 *///  w  ww.j ava  2s.  co m
public static Float validateNumber(String strFloat) {
    ParsePosition pp;
    NumberFormat nfDLocal = NumberFormat.getNumberInstance();
    nfDLocal.setGroupingUsed(false);
    pp = new ParsePosition(0);
    pp.setIndex(0);
    Number n = nfDLocal.parse(strFloat, pp);
    if (strFloat.length() != pp.getIndex() || n == null) {
        return null;
    } else {
        return n.floatValue();
    }
}

From source file:com.jeeframework.util.validate.GenericTypeValidator.java

/**
 *  Checks if the value can safely be converted to a float primitive.
 *
 *@param  value   The value validation is being performed on.
 *@param  locale  The locale to use to parse the number (system default if
 *      null)//w  ww.  j a  va 2 s.  c om
 *@return the converted Float value.
 */
public static Float formatFloat(String value, Locale locale) {
    Float result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getInstance(locale);
        } else {
            formatter = NumberFormat.getInstance(Locale.getDefault());
        }
        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() >= (Float.MAX_VALUE * -1) && num.doubleValue() <= Float.MAX_VALUE) {
                result = new Float(num.floatValue());
            }
        }
    }

    return result;
}

From source file:com.jeeframework.util.validate.GenericTypeValidator.java

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

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getInstance(locale);
        } else {
            formatter = NumberFormat.getInstance(Locale.getDefault());
        }
        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() >= (Double.MAX_VALUE * -1) && num.doubleValue() <= Double.MAX_VALUE) {
                result = new Double(num.doubleValue());
            }
        }
    }

    return result;
}

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

/**
 * Checks if the value can safely be converted to a float primitive.
 * //  w ww .ja v  a 2s .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 Float value.
 */
public static Float formatFloat(String value, Locale locale) {
    Float result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getInstance(locale);
        } else {
            formatter = NumberFormat.getInstance(Locale.getDefault());
        }
        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() >= (Float.MAX_VALUE * -1) && num.doubleValue() <= Float.MAX_VALUE) {
                result = new Float(num.floatValue());
            }
        }
    }

    return result;
}

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

/**
 * Checks if the value can safely be converted to a double primitive.
 * //  w  w w  .  ja v  a  2s.co  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 Double value.
 */
public static Double formatDouble(String value, Locale locale) {
    Double result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getInstance(locale);
        } else {
            formatter = NumberFormat.getInstance(Locale.getDefault());
        }
        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() >= (Double.MAX_VALUE * -1) && num.doubleValue() <= Double.MAX_VALUE) {
                result = new Double(num.doubleValue());
            }
        }
    }

    return result;
}

From source file:org.pentaho.reporting.libraries.formula.typing.DefaultTypeRegistry.java

private static Number parse(final NumberFormat format, final String source) {
    final ParsePosition parsePosition = new ParsePosition(0);
    final Number result = format.parse(source, parsePosition);
    if (parsePosition.getIndex() == 0 || parsePosition.getIndex() != source.length()) {
        return null;
    }//www .  j  a  v  a  2s  .  com
    return result;
}