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Groovy example source code file (Writable.java)

This example Groovy source code file (Writable.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

io, ioexception, ioexception, writable, writable, writer, writer

The Groovy Writable.java source code

/*
 * Copyright 2003-2007 the original author or authors.
 *
 * 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 groovy.lang;

import java.io.IOException;
import java.io.Writer;


/**
 * <p>Represents an object which is capable of writing itself to a text stream
 * in a more efficient format than just creating a toString() representation
 * of itself. This mechanism is particularly useful for templates and such like.
 * </p>
 * 
 * <p>It is worth noting that writable implementations often override their 
 * toString() implementation as well to allow rendering the same result 
 * directly to a String; however this is not required.</p>
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 18909 $
 */
public interface Writable {

    /**
     * <p>Writes this object to the given writer.

* * <p>This is used to defer content creation until the point when it is * streamed to the output destination. Oftentimes, content will be defined * but not necessarily created (as is may be the case with a Closure * definition.) In that case, the output is then 'deferred' to the point * when it is serialized to the writer. This class may be used whenever an * object should be responsible for creating its own textual representation, * but creating the entire output as a single String would be inefficient * (such as outputting a multi-gigabyte XML document.)</p> * * @param out the Writer to which this Writable should output its data. * @return the Writer that was passed * @throws IOException if an error occurred while outputting data to the * writer */ Writer writeTo(Writer out) throws IOException; }

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