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reactive4java developed by David Karnok

There is a newer version: 0.98.1

/*
 * Copyright 2011-2013 David Karnok
 *
 * 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 hu.akarnokd.reactive4java.base;

import javax.annotation.Nonnull;

/**
 * Common superclass for all observers
 * defining the error and finish methods.
 * @author akarnokd, 2013.01.15.
 * @since 0.97
 */
public interface BaseObserver {
    /** 
     * An exception is received.
     * @param ex the exception 
     */
    void error(@Nonnull Throwable ex);
    /** 
     * No more values to expect. 
     */
    void finish();
}