Why is StandardOpenOption.CREATE_NEW not creating a file to be read from in Java?

Here is my code:

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.SeekableByteChannel;
import java.nio.file.Files;
import java.nio.file.InvalidPathException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

public class ExplicitChannelRead {

    public static void main(String[] args) {
        
        int count;
        Path filePath = null;
        
        // First, obtain a path to a file.
        try {
            filePath = Paths.get("test1.txt");
        }
        catch(InvalidPathException e) {
            System.out.println("Path error: "+e);
            return;
        }
        
        // Next, obtain a channel to that file within a try-with-resources block.
        try(SeekableByteChannel fChan = 
                Files.newByteChannel(filePath, StandardOpenOption.CREATE_NEW)) {
            
            // Allocate a buffer.
            ByteBuffer mBuf = ByteBuffer.allocate(128);
            
            while((count=fChan.read(mBuf)) != -1) {
                
                //Rewind the buffer so that it can be read.
                mBuf.rewind();
                
                for(int i=0; i<count; i++) System.out.print((char)mBuf.get());
                
            }
            
            System.out.println();
            
            
        } catch (IOException e) {
            e.printStackTrace();
//          System.out.println("I/O error: "+e);
        }
        

    }

}

On running the above code I get this exception:

java.nio.file.NoSuchFileException: test1.txt
    at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85)
    at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
    at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
    at java.base/sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:235)
    at java.base/java.nio.file.Files.newByteChannel(Files.java:375)
    at java.base/java.nio.file.Files.newByteChannel(Files.java:426)
    at fileNIO.ExplicitChannelRead.main(ExplicitChannelRead.java:31)

I don't understand why test1.txt file is not being created as it doesn't exist currently and I am using the StandardOpenOption.CREATE_NEW option?

When I use StandardOpenOption.WRITE option along with StandardOpenOption.CREATE_NEW then I see the file text1.txt being created and at that time I get the exception:

Exception in thread "main" java.nio.channels.NonReadableChannelException

This exception I understand its cause because I have opened the file in write mode and in the code I am performing read operation on the file.

It seems to me that a new file can't be created when the file is opened in read mode.