Java Reflection Assignable isAssignableFrom(Class class1, Class class2)

Description

is Assignable From

License

Open Source License

Declaration

public static boolean isAssignableFrom(Class<?> class1, Class<?> class2) 

Method Source Code

//package com.java2s;
/*/* w w w  .  j  a v  a 2s . c  om*/
 * Copyright (C) 2002, 2004 Takao Nakaguchi.
 *
 * This is a program for Language Grid Core Node. This combines multiple language resources and provides composite language services.
 * Copyright (C) 2005-2008 NICT Language Grid Project.
 * Copyright (C) 2014 Language Grid Project.
 *
 * This program is free software: you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by 
 * the Free Software Foundation, either version 2.1 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 Lesser 
 * General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License 
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

import java.util.HashMap;

import java.util.Map;

public class Main {
    private static Map<String, Class<?>> nameToPrimitiveClass = new HashMap<String, Class<?>>();
    private static Map<String, Class<?>> primitiveToWrapperClass = new HashMap<String, Class<?>>();

    /**
     * 
     * 
     */
    public static boolean isAssignableFrom(Class<?> class1, Class<?> class2) {
        if (class1.isAssignableFrom(class2))
            return true;
        if (!class1.isPrimitive())
            return false;
        Class<?> wrapper = primitiveToWrapperClass.get(class1.getName());
        return wrapper.isAssignableFrom(class2);
    }

    /**
     * 
     * 
     */
    public static boolean isPrimitive(String className) {
        return nameToPrimitiveClass.containsKey(className);
    }
}

Related

1. isAssignable(Class cls, final Class toClass)
2. isAssignable(Class lhsType, Class rhsType)
3. isAssignable(Class lhsType, Class rhsType)
4. isAssignable(Class lhsType, Class rhsType)
5. isAssignable(final Class from, final Class to)
6. isAssignableFrom(Class to, Class from)
7. isAssignableFrom(Class to, Class from)
8. isAssignableFrom(Class toClass, Class fromClass)
9. isAssignableValue(Class type, Object value)