Supplier.java

/*
 * Copyright (C) 2007 Google Inc.
 *
 * 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.
 */

package org.jboss.solder.util.collections;


/**
 * A class that can supply objects of a single type.  Semantically, this could
 * be a factory, generator, builder, closure, or something else entirely. No
 * guarantees are implied by this interface.
 *
 * @author Harry Heymann
 */
public interface Supplier<T> {
    /**
     * Retrieves an instance of the appropriate type. The returned object may or
     * may not be a new instance, depending on the implementation.
     *
     * @return an instance of the appropriate type
     */
    public T get();
}