MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class MainClass {
    public static void main(String[] args) {
        String phrase = new String("text \n");
        String dirname = "C:/test";
        String filename = "charData.txt";
        File dir = new File(dirname);
        File aFile = new File(dir, filename);
        FileOutputStream outputFile = null;
        try {
            outputFile = new FileOutputStream(aFile, true);
            System.out.println("File stream created successfully.");
        } catch (FileNotFoundException e) {
            e.printStackTrace(System.err);
        }
        FileChannel outChannel = outputFile.getChannel();
        ByteBuffer buf = ByteBuffer.allocate(1024);
        System.out.println("New buffer:           position = " + buf.position() + "\tLimit = " + buf.limit()
                + "\tcapacity = " + buf.capacity());
        for (char ch : phrase.toCharArray()) {
            buf.putChar(ch);
        }
        System.out.println("Buffer after loading: position = " + buf.position() + "\tLimit = " + buf.limit()
                + "\tcapacity = " + buf.capacity());
        buf.flip();
        System.out.println("Buffer after flip:   position = " + buf.position() + "\tLimit = " + buf.limit()
                + "\tcapacity = " + buf.capacity());
        try {
            outChannel.write(buf);
            outputFile.close();
            System.out.println("Buffer contents written to file.");
        } catch (IOException e) {
            e.printStackTrace(System.err);
        }
    }
}