NullPrintWriter.java

/*
 * Copyright 2012-2015 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 org.springframework.boot.actuate.metrics.buffer;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;

/**
 * A {@link PrintWriter} that writes to {@code NUL} on Windows and {@code /dev/null} on
 * all other platforms.
 *
 * @author Andy Wilkinson
 */
public class NullPrintWriter extends PrintWriter {

	public NullPrintWriter() throws FileNotFoundException {
		super(isWindows() ? "NUL" : "/dev/null");
	}

	private static boolean isWindows() {
		return File.separatorChar == '\\';
	}

}