java - How to read UTF8 encoded file using RandomAccessFile?

Question

I have text file that was encoded with UTF8 (for language specific characters). I need to use RandomAccessFile to seek specific position and read from.

I want read line-by-line.

String str = myreader.readLine(); //returns wrong text, not decoded 
String str myreader.readUTF(); //An exception occurred: java.io.EOFException

Answer 1

You can convert string, read by readLine to UTF8, using following code:

public static void main(String[] args) throws IOException {
    RandomAccessFile raf = new RandomAccessFile(new File("MyFile.txt"), "r");
    String line = raf.readLine();
    String utf8 = new String(line.getBytes("ISO-8859-1"), "UTF-8");
    System.out.println("Line: " + line);
    System.out.println("UTF8: " + utf8);
}

Content of MyFile.txt: (UTF-8 Encoding)

Привет из Украины

Console output:

Line: D?D?D2Dμ? D?D· D￡Do?D°D?D??
UTF8: Привет из Украины