Java InputStreamReader Create readTextFile(java.io.File file)

Description

Read text file to a string.

License

Open Source License

Parameter

Parameter	Description
file	Text file to read from.

Exception

Parameter	Description
IOException	if file cannot be read.

Return

Contents of file as a string.

Declaration

public static String readTextFile(java.io.File file) throws IOException 

Method Source Code

//package com.java2s;
/*   Please see the license information at the end of this file. */

import java.io.*;

public class Main {
    /**   Read text file to a string.
     *//  w w  w .j  a va 2 s  . c o  m
     *   @param   file      Text file to read from.
     *   @param   encoding   Text file encoding, e.g., "utf-8".
     *
     *   @return            Contents of file as a string.
     *
     *   @throws   IOException
     *                  if file cannot be read.
     */

    public static String readTextFile(java.io.File file, String encoding) throws IOException {
        StringBuffer contents = new StringBuffer((int) file.length());

        BufferedReader bufferedReader;

        String safeEncoding = (encoding == null) ? "" : encoding;

        if (safeEncoding.length() > 0) {
            bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(file), safeEncoding));
        } else {
            bufferedReader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
        }

        boolean eof = false;

        String contentLine = "";
        String eolChar = "\n";

        while (!eof) {
            contentLine = bufferedReader.readLine();

            if (contentLine == null) {
                eof = true;
            } else {
                contents.append(contentLine);
                contents.append(eolChar);
            }
        }

        bufferedReader.close();

        return contents.toString();
    }

    /**   Read text file to a string.
     *
     *   @param   file      Text file to read from.
     *
     *   @return            Contents of file as a string.
     *
     *   @throws   IOException
     *                  if file cannot be read.
     */

    public static String readTextFile(java.io.File file) throws IOException {
        return readTextFile(file, null);
    }

    /**   Read text file to a string.
     *
     *   @param   fileName   Text file name to read from.
     *   @param   encoding   Text file encoding, e.g., "utf-8".
     *
     *   @return            Contents of file as a string.
     *
     *   @throws   IOException
     *                  if file cannot be read.
     */

    public static String readTextFile(String fileName, String encoding) throws IOException {
        return readTextFile(new java.io.File(fileName), encoding);
    }

    /**   Read text file to a string.
     *
     *   @param   fileName   Text file name to read from.
     *
     *   @return            Contents of file as a string.
     *
     *   @throws   IOException
     *                  if file cannot be read.
     */

    public static String readTextFile(String fileName) throws IOException {
        return readTextFile(new java.io.File(fileName));
    }
}

Related

1. readTextFile(File inputFile)
2. readTextFile(File path)
3. readTextFile(final File f)
4. readTextFile(final File file)
5. ReadTextFile(InputStream is)
6. readTextFile(Reader reader)
7. readTextFile(String fileName)
8. readTextFile(String filename, int maxNumLines, boolean startAtBeginning)
9. readTextFile(String filePath, String charset)