Java Number Parse toNumber(String hash)

Description

Decodes the String provided which should represent a hexadecimal number into a Long .

License

Open Source License

Parameter

Parameter	Description
hash	the String to be decoded

Exception

Parameter	Description
NumberFormatException	If hash does not contain a valid Long.

Return

the Long created from decoding the String provided or null if hash is null

Declaration

public static Long toNumber(String hash) throws NumberFormatException 

Method Source Code

//package com.java2s;
/* Copyright (C) 2011 Alasdair Mercer, http://neocotic.com/
 * //from   ww  w. jav  a  2s . co m
 * 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 {
    /**
     * Decodes the {@code String} provided which should represent a hexadecimal
     * number into a {@code Long}.
     * 
     * @param hash
     *            the {@code String} to be decoded
     * @return the {@code Long} created from decoding the {@code String}
     *         provided or {@code null} if {@code hash} is {@code null}
     * @throws NumberFormatException
     *             If {@code hash} does not contain a valid {@code Long}.
     */
    public static Long toNumber(String hash) throws NumberFormatException {
        return (hash == null) ? null : Long.decode("0x" + hash);
    }
}

Related

1. toNumber(char letter)
2. toNumber(CharSequence jsonText)
3. toNumber(final Object obj)
4. toNumber(Object object, Number defaultValue)
5. toNumber(Object object, Number defaultValue)
6. toNumber(String num)
7. toNumber(String s)
8. toNumber(String string)
9. toNumber(String text)