001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018 package org.apache.commons.proxy.util; 019 020 import java.io.IOException; 021 022 /** 023 * @author James Carman 024 * @since 1.0 025 */ 026 public interface Echo 027 { 028 public String echoBack( String message ); 029 public String echoBack( String message1, String message2 ); 030 public String echoBack( String[] messages ); 031 public int echoBack( int i ); 032 public boolean echoBack( boolean b ); 033 public void echo(); 034 035 public void ioException() throws IOException; 036 public void illegalArgument(); 037 }