Java InputStream Create toInputStream(CharSequence input)

Description

Convert the specified CharSequence to an input stream, encoded as bytes using the default character encoding of the platform.

License

Apache License

Parameter

Parameter	Description
input	the CharSequence to convert

Return

an input stream

Declaration

public static InputStream toInputStream(CharSequence input) 

Method Source Code

//package com.java2s;
/*//from  w  ww  .jav a2  s .  c  o  m
 * 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.ByteArrayInputStream;

import java.io.IOException;
import java.io.InputStream;

public class Main {
    /**
     * Convert the specified CharSequence to an input stream, encoded as bytes
     * using the default character encoding of the platform.
     *
     * @param input the CharSequence to convert
     * @return an input stream
     * @since 2.0
     */
    public static InputStream toInputStream(CharSequence input) {
        return toInputStream(input.toString());
    }

    /**
     * Convert the specified CharSequence to an input stream, encoded as bytes
     * using the specified character encoding.
     * <p>
     * Character encoding names can be found at
     * <a href="http://www.iana.org/assignments/character-sets">IANA</a>.
     *
     * @param input the CharSequence to convert
     * @param encoding the encoding to use, null means platform default
     * @throws IOException if the encoding is invalid
     * @return an input stream
     * @since 2.0
     */
    public static InputStream toInputStream(CharSequence input, String encoding) throws IOException {
        return toInputStream(input.toString(), encoding);
    }

    /**
     * Convert the specified string to an input stream, encoded as bytes
     * using the default character encoding of the platform.
     *
     * @param input the string to convert
     * @return an input stream
     * @since 1.1
     */
    public static InputStream toInputStream(String input) {
        byte[] bytes = input.getBytes();
        return new ByteArrayInputStream(bytes);
    }

    /**
     * Convert the specified string to an input stream, encoded as bytes
     * using the specified character encoding.
     * <p>
     * Character encoding names can be found at
     * <a href="http://www.iana.org/assignments/character-sets">IANA</a>.
     *
     * @param input the string to convert
     * @param encoding the encoding to use, null means platform default
     * @throws IOException if the encoding is invalid
     * @return an input stream
     * @since 1.1
     */
    public static InputStream toInputStream(String input, String encoding) throws IOException {
        byte[] bytes = encoding != null ? input.getBytes(encoding) : input.getBytes();
        return new ByteArrayInputStream(bytes);
    }

    /**
     * Get the contents of a <code>byte[]</code> as a String
     * using the default character encoding of the platform.
     * 
     * @param input the byte array to read from
     * @return the requested String
     * @throws NullPointerException if the input is null
     * @throws IOException if an I/O error occurs (never occurs)
     * @deprecated Use {@link String#String(byte[])}
     */
    @Deprecated
    public static String toString(byte[] input) throws IOException {
        return new String(input);
    }

    /**
     * Get the contents of a <code>byte[]</code> as a String
     * using the specified character encoding.
     * <p>
     * Character encoding names can be found at
     * <a href="http://www.iana.org/assignments/character-sets">IANA</a>.
     * 
     * @param input the byte array to read from
     * @param encoding  the encoding to use, null means platform default
     * @return the requested String
     * @throws NullPointerException if the input is null
     * @throws IOException if an I/O error occurs (never occurs)
     * @deprecated Use {@link String#String(byte[],String)}
     */
    @Deprecated
    public static String toString(byte[] input, String encoding) throws IOException {
        if (encoding == null) {
            return new String(input);
        } else {
            return new String(input, encoding);
        }
    }
}

Related

1. InputStreamFromString(String str)
2. newInputStream(Class clazz, String filename)
3. newInputStreamReader(InputStream is)
4. toInputStream(byte[] bytes)
5. toInputStream(byte[] data)
6. toInputStream(CharSequence input, String encoding)
7. toInputStream(CharSequence input, String encoding)
8. toInputStream(File file)
9. toInputStream(File file)