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Getting FileChannel from FileInputStream

import java.io.FileInputStream; import java.nio.ByteBuffer; import java.nio.channels.FileChannel; public class MainClass {   private static final int BSIZE = 1024;   public static void main(String[] args) throws Exception {     FileChannel fc = new FileInputStream("data.txt").getChannel();     ByteBuffer buff = ByteBuffer.allocate(BSIZE);     fc.read(buff);     buff.flip();     while (buff.hasRemaining())       System.out.print((char) buff.get());   } }