Java I/O How to - Convert text to and from ByteBuffers with UTF-16BE

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Question

We would like to know how to convert text to and from ByteBuffers with UTF-16BE.

Answer

   /* w  w w . j  ava2s .c  om*/

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;

public class MainClass {

  private static final int BSIZE = 1024;
  public static void main(String[] args) throws Exception {
    FileChannel fc = new FileOutputStream("data2.txt").getChannel();
    fc.write(ByteBuffer.wrap(
      "Some text".getBytes("UTF-16BE")));
    fc.close();
    ByteBuffer buff = ByteBuffer.allocate(BSIZE);
    // Now try reading again:
    fc = new FileInputStream("data2.txt").getChannel();
    buff.clear();
    fc.read(buff);
    buff.flip();
    System.out.println(buff.asCharBuffer());
    
  }
}

The code above generates the following result.

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