Java Locale Format format(String message, Object[] params)

Description

Apply printf() like formatting to a string.

License

Apache License

Parameter

Parameter	Description
message	the string with embedded formatting info eg. "This is a test %2.2"
params	array of values to format into the string

Return

The formatted string

Declaration

public static String format(String message, Object[] params) 

Method Source Code

//package com.java2s;
/* NOTICE: This file has been changed by Plutext Pty Ltd for use in docx4j.
 * The package name has been changed; there may also be other changes.
 * /*from   www.java 2 s  .c  om*/
 * This notice is included to meet the condition in clause 4(b) of the License. 
 */

import java.text.FieldPosition;
import java.text.NumberFormat;

import java.util.Locale;

public class Main {
    /**
     *  Apply printf() like formatting to a string.
     *  Primarily used for logging.
     * @param  message  the string with embedded formatting info
     *                 eg. "This is a test %2.2"
     * @param  params   array of values to format into the string
     * @return          The formatted string
     */
    public static String format(String message, Object[] params) {
        int currentParamNumber = 0;
        StringBuffer formattedMessage = new StringBuffer();
        for (int i = 0; i < message.length(); i++) {
            if (message.charAt(i) == '%') {
                if (currentParamNumber >= params.length) {
                    formattedMessage.append("?missing data?");
                } else if ((params[currentParamNumber] instanceof Number) && (i + 1 < message.length())) {
                    i += matchOptionalFormatting((Number) params[currentParamNumber++], message.substring(i + 1),
                            formattedMessage);
                } else {
                    formattedMessage.append(params[currentParamNumber++].toString());
                }
            } else {
                if ((message.charAt(i) == '\\') && (i + 1 < message.length()) && (message.charAt(i + 1) == '%')) {
                    formattedMessage.append('%');
                    i++;
                } else {
                    formattedMessage.append(message.charAt(i));
                }
            }
        }
        return formattedMessage.toString();
    }

    private static int matchOptionalFormatting(Number number, String formatting, StringBuffer outputTo) {
        NumberFormat numberFormat = NumberFormat.getInstance(Locale.US);
        if ((0 < formatting.length()) && Character.isDigit(formatting.charAt(0))) {
            numberFormat.setMinimumIntegerDigits(Integer.parseInt(formatting.charAt(0) + ""));
            if ((2 < formatting.length()) && (formatting.charAt(1) == '.')
                    && Character.isDigit(formatting.charAt(2))) {
                numberFormat.setMaximumFractionDigits(Integer.parseInt(formatting.charAt(2) + ""));
                numberFormat.format(number, outputTo, new FieldPosition(0));
                return 3;
            }
            numberFormat.format(number, outputTo, new FieldPosition(0));
            return 1;
        } else if ((0 < formatting.length()) && (formatting.charAt(0) == '.')) {
            if ((1 < formatting.length()) && Character.isDigit(formatting.charAt(1))) {
                numberFormat.setMaximumFractionDigits(Integer.parseInt(formatting.charAt(1) + ""));
                numberFormat.format(number, outputTo, new FieldPosition(0));
                return 2;
            }
        }
        numberFormat.format(number, outputTo, new FieldPosition(0));
        return 1;
    }
}

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7. format12(final long ticks)
8. formatAdena(long amount)
9. formatAdena(long amount)