Java Object to Boolean toBoolean(Object propValue, boolean defaultValue)

Description

Returns the boolean value of the parameter or the defaultValue if the parameter is null.

License

Apache License

Parameter

Parameter	Description
propValue	the property value or <code>null</code>
defaultValue	the default boolean value

Return

Boolean value

Declaration

public static boolean toBoolean(Object propValue, boolean defaultValue) 

Method Source Code

//package com.java2s;
/*//from w  w w.ja  va  2  s .  c  o m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.Collection;

public class Main {
    /**
     * Returns the boolean value of the parameter or the
     * <code>defaultValue</code> if the parameter is <code>null</code>.
     * If the parameter is not a <code>Boolean</code> it is converted
     * by calling <code>Boolean.valueOf</code> on the string value of the
     * object.
     * @param propValue the property value or <code>null</code>
     * @param defaultValue the default boolean value
     * @return Boolean value
     */
    public static boolean toBoolean(Object propValue, boolean defaultValue) {
        propValue = toObject(propValue);
        if (propValue instanceof Boolean) {
            return (Boolean) propValue;
        } else if (propValue != null) {
            return Boolean.parseBoolean(String.valueOf(propValue));
        }

        return defaultValue;
    }

    /**
     * Returns the parameter as a single value. If the
     * parameter is neither an array nor a <code>java.util.Collection</code> the
     * parameter is returned unmodified. If the parameter is a non-empty array,
     * the first array element is returned. If the property is a non-empty
     * <code>java.util.Collection</code>, the first collection element is returned.
     * Otherwise <code>null</code> is returned.
     * @param propValue the parameter to convert.
     * @return Object value
     */
    public static Object toObject(Object propValue) {
        if (propValue == null) {
            return null;
        } else if (propValue.getClass().isArray()) {
            Object[] prop = (Object[]) propValue;
            return prop.length > 0 ? prop[0] : null;
        } else if (propValue instanceof Collection<?>) {
            Collection<?> prop = (Collection<?>) propValue;
            return prop.isEmpty() ? null : prop.iterator().next();
        } else {
            return propValue;
        }
    }

    private static boolean isEmpty(String str) {
        return str == null || str.length() == 0;
    }
}

Related

1. objectToBoolean(Object o)
2. objectToBoolean(Object Obj)
3. objectToBoolean(Object p1)
4. toBoolean(Object object)
5. toBoolean(Object propValue, boolean defaultValue)