Java InputStreamReader Read readFile(File file)

Description

read File

License

Apache License

Declaration

public static String readFile(File file)
            throws UnsupportedEncodingException, FileNotFoundException, IOException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;

import java.io.IOException;
import java.io.InputStreamReader;

import java.io.Reader;
import java.io.UnsupportedEncodingException;

public class Main {
    private static final int BUFFER = 2048;

    public static String readFile(File file)
            throws UnsupportedEncodingException, FileNotFoundException, IOException {
        final char[] buffer = new char[BUFFER];
        final StringBuilder out = new StringBuilder();
        try (final Reader in = new InputStreamReader(new FileInputStream(file), "UTF-8")) {
            return readFromStream(buffer, out, in);
        }/*from   ww w.j  a va 2  s .  c  o  m*/
    }

    public static String readFromStream(final char[] buffer, final StringBuilder out, final Reader in)
            throws IOException {
        while (true) {
            final int read = in.read(buffer, 0, BUFFER);
            if (read <= 0) {
                break;
            }
            out.append(buffer, 0, read);
        }
        return out.toString();
    }
}

Related

1. readFile(File file)
2. readFile(File file)
3. readFile(File file)
4. readFile(File file)
5. readFile(File file)
6. readFile(File file)
7. readFile(File file, String default_encoding)
8. readFile(File file, String encoding)
9. readFile(File file, String encoding)