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Guava IO contains a variety of types and utilities to ease IO handling in Java.

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/*
 * Copyright (C) 2004 Google Inc.
 *
 * 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 com.google.common.io;

import com.google.common.annotations.Beta;

import java.io.OutputStream;

/**
 * Implementation of {@link OutputStream} that simply discards written bytes.
 *
 * @author Spencer Kimball
 * @since 1
 */
@Beta
public final class NullOutputStream extends OutputStream {
  /** Discards the specified byte. */
  @Override public void write(int b) {
  }

  /** Discards the specified byte array. */
  @Override public void write(byte[] b, int off, int len) {
  }
}