Test.java Source code

Introduction

Here is the source code for Test.java

Source

import java.nio.ByteBuffer;
import java.nio.channels.AsynchronousFileChannel;
import java.nio.channels.CompletionHandler;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

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);
        CompletionHandler<Integer, Object> handler = new CompletionHandler<Integer, Object>() {

            @Override
            public void completed(Integer result, Object attachment) {
                System.out.println("Attachment: " + attachment + " " + result + " bytes written");
                System.out.println("CompletionHandler Thread ID: " + Thread.currentThread().getId());
            }

            @Override
            public void failed(Throwable e, Object attachment) {
                System.err.println("Attachment: " + attachment + " failed with:");
                e.printStackTrace();
            }
        };

        System.out.println("Main Thread ID: " + Thread.currentThread().getId());
        fileChannel.write(ByteBuffer.wrap("Sample".getBytes()), 0, "First Write", handler);
        fileChannel.write(ByteBuffer.wrap("Box".getBytes()), 0, "Second Write", handler);

    }
}