Java Number Negate negate(String string, String trueValue, String falseValue)

Description

Returns the negated boolean value of the given string.

License

Open Source License

Parameter

Parameter	Description
string	The boolean string to be negated.
trueValue	The value used to determine if the string represents the boolean value true.
falseValue	The value used to determine if the string represents the boolean value false.

Return

The given boolean string negated.

Declaration

public static String negate(String string, String trueValue, String falseValue) 

Method Source Code

//package com.java2s;
/*//from  ww  w.ja va2s  . co  m
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Lachlan Dowding
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

public class Main {
    /**
     * Returns the negated boolean value of the given string.
     *
     * @param string     The boolean string to be negated.
     * @param trueValue  The value used to determine if the string represents the boolean value true.
     * @param falseValue The value used to determine if the string represents the boolean value false.
     * @return The given boolean string negated.
     */
    public static String negate(String string, String trueValue, String falseValue) {
        return emit(negate(parse(string, trueValue, falseValue)), trueValue, falseValue);
    }

    /**
     * Returns the negated boolean value of the given string.
     *
     * @param string The boolean string to be negated.
     * @return The given boolean string negated.
     */
    public static String negate(String string) {
        return negate(string, null, null);
    }

    /**
     * Returns the negated value of the given boolean.
     *
     * @param bool The boolean value to be negated.
     * @return The given boolean value negated.
     */
    public static boolean negate(boolean bool) {
        return !bool;
    }

    /**
     * Returns a string representation of the given boolean value.
     *
     * @param bool       The boolean to convert to a string.
     * @param trueValue  The value returned if the given boolean is true.
     * @param falseValue The value returned if the given boolean is false.
     * @return The string representation of the given boolean.
     */
    public static String emit(boolean bool, String trueValue, String falseValue) {
        return bool ? (trueValue == null ? Boolean.toString(bool) : trueValue)
                : (falseValue == null ? Boolean.toString(bool) : falseValue);
    }

    /**
     * Returns a boolean value in its canonical string form: "true" or "false".
     *
     * @param bool The boolean value to serialize to a string.
     * @return The canonical string representation of the given boolean value.
     */
    public static String emit(boolean bool) {
        return emit(bool, null, null);
    }

    /**
     * Parses a string that can contain (ignoring case and leading and trailing whitespace) "true" or "1" to represent
     * true, or "false" or "0" falseValue to represent false.
     *
     * @param string The boolean string to be parsed.
     * @return The boolean value of the given string.
     */
    public static boolean parse(String string) {
        return parse(string, false);
    }

    /**
     * Parses a string that can contain (ignoring case and leading and trailing whitespace) "true" or "1" to represent
     * true, or "false" or "0" falseValue to represent false.
     *
     * @param string       The boolean string to be parsed.
     * @param defaultValue The boolean value returned if the given string is null.
     * @return The boolean value of the given string.
     */
    public static boolean parse(String string, String defaultValue) {
        return parse(string, parse(defaultValue));
    }

    /**
     * Parses a string that can contain (ignoring case and leading and trailing whitespace) "true" or "1" to represent
     * true, or "false" or "0" falseValue to represent false.
     *
     * @param string       The boolean string to be parsed.
     * @param defaultValue The boolean value returned if the given string is null.
     * @return The boolean value of the given string.
     */
    public static boolean parse(String string, boolean defaultValue) {
        return parse(string, null, null, defaultValue);
    }

    /**
     * Parses a string that can contain (ignoring case and leading and trailing whitespace) "true" or "1" or the given
     * trueValue to represent true, or "false" or "0" or the given falseValue to represent false.
     *
     * @param string     The boolean string to be parsed.
     * @param trueValue  The value used to determine if the string represents the boolean value true.
     * @param falseValue The value used to determine if the string represents the boolean value false.
     * @return The boolean value of the given string.
     */
    public static boolean parse(String string, String trueValue, String falseValue) {
        return parse(string, trueValue, falseValue, false);
    }

    /**
     * Parses a string that can contain (ignoring case and leading and trailing whitespace) "true" or "1" or the given
     * trueValue to represent true, or "false" or "0" or the given falseValue to represent false.
     *
     * @param string       The boolean string to be parsed.
     * @param trueValue    The value used to determine if the string represents the boolean value true.
     * @param falseValue   The value used to determine if the string represents the boolean value false.
     * @param defaultValue The boolean value returned if the given string is null.
     * @return The boolean value of the given string.
     */
    public static boolean parse(String string, String trueValue, String falseValue, String defaultValue) {
        return parse(string, trueValue, falseValue, parse(defaultValue));
    }

    /**
     * Parses a string that can contain (ignoring case and leading and trailing whitespace) "true" or "1" or the given
     * trueValue to represent true, or "false" or "0" or the given falseValue to represent false.
     *
     * @param string       The boolean string to be parsed.
     * @param trueValue    The value used to determine if the string represents the boolean value true.
     * @param falseValue   The value used to determine if the string represents the boolean value false.
     * @param defaultValue The boolean value returned if the given string is null.
     * @return The boolean value of the given string.
     */
    public static boolean parse(String string, String trueValue, String falseValue, boolean defaultValue) {
        if (string == null)
            return defaultValue;

        string = string.trim().toLowerCase();

        boolean result;

        if (string.equals("1") || string.equals("true")
                || (trueValue != null && string.equalsIgnoreCase(trueValue))) {
            result = true;
        } else if (string.equals("0") || string.equals("false")
                || (falseValue != null && string.equalsIgnoreCase(falseValue))) {
            result = false;
        } else {
            throw new IllegalArgumentException("Unparseable boolean value: " + string);
        }

        return result;
    }
}

Related

1. negate(final Boolean bool)
2. negate(int[] ar)
3. negate(int[] input)
4. negate(int[] x, int Max)
5. negate(String expr)
6. negate(String value)
7. negateExact(double a)
8. negateExpression(String expression)
9. negateInPlace(float[] in)