Buffer: remaining() : Buffer « java.nio « Java by API

1. Java by API
2. java.nio
3. Buffer

Buffer: remaining()

 
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.nio.ByteBuffer;
import java.nio.LongBuffer;
import java.nio.BufferUnderflowException;
import java.nio.channels.FileChannel;

public class MainClass {
  public static void main(String[] args) {
    File aFile = new File("data.dat");
    FileInputStream inFile = null;

    try {
      inFile = new FileInputStream(aFile);
    } catch (FileNotFoundException e) {
      e.printStackTrace(System.err);
      System.exit(1);
    }

    FileChannel inChannel = inFile.getChannel();
    final int COUNT = 6;
    ByteBuffer buf = ByteBuffer.allocate(8 * COUNT);
    long[] data = new long[COUNT];
    try {
      int pos = 0;
      while (inChannel.read(buf) != -1) {
        try {
          ((ByteBuffer) (buf.flip())).asLongBuffer().get(data);
          pos = data.length;
        } catch (BufferUnderflowException e) {
          LongBuffer longBuf = buf.asLongBuffer();
          pos = longBuf.remaining();
          longBuf.get(data, 0, pos);
        }
        System.out.println();
        for (int i = 0; i < pos; i++) {
          System.out.printf("%10d", data[i]);
        }
        buf.clear();
      }
      System.out.println("\nEOF reached.");
      inFile.close();
    } catch (IOException e) {
      e.printStackTrace(System.err);
      System.exit(1);
    }
  }
}

           
         
  

Related examples in the same category