Java Number Multiply multiply(Number a, Number b, Class cl)

Description

multiply

License

Open Source License

Declaration

public static <T extends Number> T multiply(Number a, Number b, Class<T> cl) 

Method Source Code

//package com.java2s;
/*//from w w  w.ja  v  a2 s.  c  o  m
 * Copyright (c) 2016 Alexander Gr?n
 *
 * 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 {
    public static <T extends Number> T multiply(Number a, Number b, Class<T> cl) {
        return convert(a.doubleValue() * b.doubleValue(), cl);
    }

    @SuppressWarnings("unchecked")
    public static <T extends Number> T convert(Number n, Class<T> cl) {
        if (cl == Double.class) {
            return (T) new Double(n.doubleValue());
        } else if (cl == Integer.class) {
            return (T) new Integer(n.intValue());
        } else if (cl == Float.class) {
            return (T) new Float(n.floatValue());
        } else if (cl == Long.class) {
            return (T) new Long(n.longValue());
        } else if (cl == Short.class) {
            return (T) new Short(n.shortValue());
        } else if (cl == Byte.class) {
            return (T) new Byte(n.byteValue());
        }
        return null;
    }
}

Related

1. multiply(final long a, final long b)
2. multiply(final long x, final long y)
3. multiply(int a, int b)
4. multiply(int x, int y)
5. multiply(Number a, Number b)
6. multiply(Number n1, Number n2)
7. multiply(Number n1, Number n2)
8. multiply(V1 value1, V2 value2)
9. multiplyForLong(final Number operand1, final int operand2)