Java InputStreamReader Read readFile(File file)

Description

read File

License

Apache License

Declaration

public static String readFile(File file) throws IOException 

Method Source Code

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

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

import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;

import java.io.Reader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;

public class Main {
    public static String readFile(File file) throws IOException {
        Reader in = new FileReader(file);
        StringWriter out = new StringWriter();
        copy(in, out);/* w  ww. j  ava  2  s . com*/
        return out.toString();
    }

    public static String readFile(File file, String encoding)
            throws IOException {
        InputStream inputStream = new FileInputStream(file);
        return toString(encoding, inputStream);
    }

    public static void copy(Reader reader, Writer writer)
            throws IOException {
        char[] buf = new char[8192];
        int n = 0;
        while ((n = reader.read(buf)) != -1) {
            writer.write(buf, 0, n);
        }
    }

    public static void copy(InputStream in, OutputStream out)
            throws IOException {
        byte[] buf = new byte[8192];
        int n = 0;
        while ((n = in.read(buf)) != -1) {
            out.write(buf, 0, n);
        }
    }

    public static String toString(InputStream inputStream)
            throws UnsupportedEncodingException, IOException {
        Reader reader = new InputStreamReader(inputStream);
        StringWriter writer = new StringWriter();
        copy(reader, writer);
        return writer.toString();
    }

    public static String toString(String encoding, InputStream inputStream)
            throws UnsupportedEncodingException, IOException {
        Reader reader = new InputStreamReader(inputStream, encoding);
        StringWriter writer = new StringWriter();
        copy(reader, writer);
        return writer.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)
8. readFile(File file)
9. readFile(File file)