Java Double Number Create toDouble(final Object obj)

Description

to Double

License

Apache License

Declaration

public static double toDouble(final Object obj) 

Method Source Code

//package com.java2s;
/*/*from   w  w w  .j  a v  a2s .  c o  m*/
 * Copyright (C) 2016 Stefan Hen?
 *
 * Licensed 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.
 */

public class Main {
    public static double toDouble(final Object obj) {
        if (obj instanceof Number) {
            return ((Number) obj).doubleValue();
        }
        if (obj instanceof Boolean) {
            return (Boolean) obj ? 1.0 : 0.0;
        }
        if (obj instanceof String) {
            if ("true".equals(obj)) {
                return 1;
            }
            if ("false".equals(obj)) {
                return 0;
            }
            return Double.valueOf((String) obj);
        }
        throw new IllegalArgumentException(obj + "");
    }

    public static double[] toDouble(final Object[] obj) {
        final double[] res = new double[obj.length];
        for (int i = 0; i < obj.length; ++i) {
            res[i] = toDouble(obj[i]);
        }
        return res;
    }
}

Related

1. toDouble(final byte[] bytes)
2. toDouble(final byte[] bytes)
3. toDouble(final byte[] inputBytes, final int offset)
4. toDouble(final int[] a, final int len)
5. toDouble(final Number n)
6. toDouble(final Object obj)
7. toDouble(final Object value)
8. toDouble(final Object valueRep)
9. toDouble(final String argStr)