Java Object to Long castLong(Object o)

Description

Casts a value to a double.

License

Open Source License

Parameter

Parameter	Description
o	a parameter

Declaration

public static Long castLong(Object o) 

Method Source Code

//package com.java2s;
/*/* w  w  w.ja v  a  2s. c  o m*/
 * Copyright (C) 2012 CyborgDev <cyborg@alta189.com>
 *
 * This file is part of Cyborg
 *
 * Cyborg 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 3 of the License, or
 * (at your option) any later version.
 *
 * Cyborg 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.  If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * Casts a value to a double. May return null.
     * @param o
     * @return
     */
    public static Long castLong(Object o) {
        if (o == null) {
            return null;
        }

        if (o instanceof Number) {
            return ((Number) o).longValue();
        } else {
            try {
                return Long.valueOf(o.toString());
            } catch (NumberFormatException e) {
                return null;
            }
        }
    }
}

Related

1. castLong(Object o)
2. castLong(Object val)
3. castLong2Int(long x)
4. castLongtoUInt(long x)
5. castToLong(final String uid)