Using AsynchronousFileChannel to write ByteBuffer and return Future : Asynchronous Channel « JDK 7 « Java

1. Java
2. JDK 7
3. Asynchronous Channel

Using AsynchronousFileChannel to write ByteBuffer and return Future

import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousFileChannel;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.concurrent.Future;

public class Test {

  public static void main(String[] args) throws Exception {
    AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(
        Paths.get("/asynchronous.txt"), StandardOpenOption.READ,
        StandardOpenOption.WRITE, StandardOpenOption.CREATE);

    Future<Integer> writeFuture1 = fileChannel.write(
        ByteBuffer.wrap("Sample".getBytes()), 0);
    Future<Integer> writeFuture2 = fileChannel.write(
        ByteBuffer.wrap("Box".getBytes()), 0);

    int result;
    result = writeFuture1.get();
    System.out.println("Sample write completed with " + result
        + " bytes written");
    result = writeFuture2.get();
    System.out.println("Box write completed with " + result + " bytes written");

  }
}

 

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