Java BufferedReader Create toBufferedReader(final Reader reader)

Description

Returns the given reader if it is a BufferedReader , otherwise creates a BufferedReader from the given reader.

License

Apache License

Parameter

Parameter	Description
reader	the reader to wrap or return (not null)

Exception

Parameter	Description
NullPointerException	if the input parameter is null

Return

the given reader or a new for the given reader

Declaration

public static BufferedReader toBufferedReader(final Reader reader) 

Method Source Code

//package com.java2s;
/*/*from w w  w  . jav a2 s .  c om*/
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

import java.io.BufferedReader;

import java.io.Reader;

public class Main {
    /**
     * Returns the given reader if it is a {@link BufferedReader}, otherwise creates a BufferedReader from the given
     * reader.
     *
     * @param reader the reader to wrap or return (not null)
     * @return the given reader or a new {@link BufferedReader} for the given reader
     * @throws NullPointerException if the input parameter is null
     * @see #buffer(Reader)
     * @since 2.2
     */
    public static BufferedReader toBufferedReader(final Reader reader) {
        return reader instanceof BufferedReader ? (BufferedReader) reader : new BufferedReader(reader);
    }

    /**
     * Returns the given reader if it is a {@link BufferedReader}, otherwise creates a BufferedReader from the given
     * reader.
     *
     * @param reader the reader to wrap or return (not null)
     * @param size the buffer size, if a new BufferedReader is created.
     * @return the given reader or a new {@link BufferedReader} for the given reader
     * @throws NullPointerException if the input parameter is null
     * @see #buffer(Reader)
     * @since 2.2
     */
    public static BufferedReader toBufferedReader(final Reader reader, int size) {
        return reader instanceof BufferedReader ? (BufferedReader) reader : new BufferedReader(reader, size);
    }
}

Related

1. getReader(String path, String charEncoding)
2. getReaderAsString(Reader reader)
3. getReaderText(BufferedReader reader)
4. getStreamReader(InputStream input)
5. getStreamText(InputStream stream)
6. toBufferedReader(InputStream is, String charset)
7. toBufferedReader(Reader reader)
8. toBufferedReader(Reader reader)
9. toBufferedReader(Reader reader)