org.apache.juneau.rest.util.FinishablePrintWriter Maven / Gradle / Ivy
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// * *
// * http://www.apache.org/licenses/LICENSE-2.0 *
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package org.apache.juneau.rest.util;
import java.io.*;
import org.apache.juneau.encoders.*;
/**
* A wrapped {@link PrintWriter} with an added finish() method.
*/
public class FinishablePrintWriter extends PrintWriter implements Finishable {
final Finishable f;
/**
* Constructor.
*
* @param out The wrapped output stream.
* @param characterEncoding The character encoding of the output stream.
* @throws IOException
*/
public FinishablePrintWriter(OutputStream out, String characterEncoding) throws IOException {
super(new OutputStreamWriter(out, characterEncoding));
f = (out instanceof Finishable ? (Finishable)out : null);
}
/**
* Calls {@link Finishable#finish()} on the underlying output stream.
*
*
* A no-op if the underlying output stream does not implement the {@link Finishable} interface.
*/
@Override /* Finishable */
public void finish() throws IOException {
if (f != null)
f.finish();
}
}