Java Boolean From toBoolean(final String value)

Description

Convert a String to a boolean using the smart way

• if the String is NULL, the Boolean will be NULL.
• if the String can be cast to a long, the boolean will be TRUE if the long value is > 0, otherwise FALSE.
• if the String is equal to "true", "yes" or "ok" the boolean will be TRUE.
• if the String is equal to "false", "no" or "ko" the boolean will be FALSE.
• all other cases will throw an IllegalArgumentException

License

Open Source License

Parameter

Parameter	Description
value	The value to convert

Return

This method will return the Boolean value of the value passed.

Declaration

public static Boolean toBoolean(final String value) throws IllegalArgumentException 

Method Source Code

//package com.java2s;
/**/*  ww  w .  j  ava2s .co  m*/
 * Copyright (C) 2012 BonitaSoft S.A.
 * BonitaSoft, 32 rue Gustave Eiffel - 38000 Grenoble
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2.0 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * Convert a String to a boolean using the smart way<br />
     * <ul>
     * <li>if the String is NULL, the Boolean will be NULL.</li>
     * <li>if the String can be cast to a long, the boolean will be TRUE if the long value is > 0, otherwise FALSE.</li>
     * <li>if the String is equal to "true", "yes" or "ok" the boolean will be TRUE.</li>
     * <li>if the String is equal to "false", "no" or "ko" the boolean will be FALSE.</li>
     * <li>all other cases will throw an IllegalArgumentException</li>
     *
     * @param value
     *            The value to convert
     *
     * @return This method will return the Boolean value of the value passed.
     *
     * @throw IllegalArgumentException
     */
    public static Boolean toBoolean(final String value) throws IllegalArgumentException {
        if (value == null) {
            return null;
        }

        // FIXME Manage integer values (<=0 false, >=1 true)

        if ("true".equals(value) || "yes".equals(value) || "ok".equals(value)) {
            return true;
        } else if ("false".equals(value) || "no".equals(value) || "ko".equals(value)) {
            return false;
        }

        try {
            return Integer.valueOf(value) > 0;
        } catch (final NumberFormatException e) {
            throw new IllegalArgumentException(value + " is not a valid boolean value");
        }
    }
}

Related

1. toBoolean(final String s)
2. toBoolean(final String source)
3. toBoolean(final String string)
4. toBoolean(final String strTransparent)
5. toBoolean(final String val)
6. toBoolean(final String value)
7. toBoolean(final String value)
8. toBoolean(final String value, final boolean def)
9. toBoolean(int i)