Java Class forName forName(String className, Class<T> xface)

Description

Returns the Class object object associated with the class or interface with the given string name, which is a subclass of xface .

License

Apache License

Parameter

Parameter	Description
className	class name
xface	class interface

Return

the class object associated with the class or interface with the given string name.

Declaration

public static <T> Class<? extends T> forName(String className, Class<T> xface)

Method Source Code

//package com.java2s;
/*/*www  . j  a  va 2s  .  c om*/
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 {
    /**
     * Returns the {@code Class} object object associated with the class or interface
     * with the given string name, which is a subclass of {@code xface}.
     *
     * @param className class name
     * @param xface class interface
     * @return the class object associated with the class or interface with the given string name.
     */
    public static <T> Class<? extends T> forName(String className, Class<T> xface) {

        // Construct the class
        Class<?> theCls;
        try {
            theCls = Class.forName(className);
        } catch (ClassNotFoundException cnfe) {
            throw new RuntimeException(cnfe);
        }
        if (!xface.isAssignableFrom(theCls)) {
            throw new RuntimeException(className + " not " + xface.getName());
        }
        return theCls.asSubclass(xface);
    }
}

Java Class forName forName(String className, Class xface)