Gets double Field. - Java Reflection

Java examples for Reflection:Field Get

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Description

Gets double Field.

Demo Code

/*/*  ww  w .  java2  s .  c om*/
 * NOTE: This is added by intellij IDE. Disregard this message if there is another copyright later in the file.
 * Copyright (C) 2014-2015  Will (n9Mtq4) Bresnahan
 * This program 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
 * This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
 */
//package com.java2s;

import java.lang.reflect.Field;

public class Main {
    /**
     * Gets double.
     *
     * @param field the field
     * @param obj the obj
     * @return the double
     */
    public static double getDouble(Field field, Object obj) {
        try {
            field.setAccessible(true);
            return field.getDouble(obj);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    /**
     * Gets double.
     *
     * @param fieldName the field name
     * @param obj       the obj
     * @param clazz     the class
     * @return the double
     */
    public static double getDouble(String fieldName, Object obj, Class clazz) {
        try {
            Field f = clazz.getDeclaredField(fieldName);
            return getDouble(f, obj);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    /**
     * Gets double.
     *
     * @param fieldName the field name
     * @param obj       the obj
     * @return the double
     */
    public static double getDouble(String fieldName, Object obj) {
        return getDouble(fieldName, obj, obj.getClass());
    }
}

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