Creating / Editing And Checking A File

I need to check an existence of a file if it is already created or not but the problem is on my code I obviously making the file first before I am able to check if it exist or not.

File createFile = new File ("//path/name.txt");

I've read somewhere that that line should not make a file without the createFile.createNewFile(); but when I tested it and on my program, my program was creating the file even without the .createNewFile() method with that said. I'm confused on how would I be able to check an existence of a file without of course having it pre-created. here is the partial code:

File newFile = new File ("C:/Documents and Settings/Admin/Desktop/Keys.txt");
BufferedWriter write = new BufferedWriter (new FileWriter (newFile));
BufferedReader read = new BufferedReader (new FileReader (newFile));
 
if (newFile.exist())
{
System.out.print("File is existing");
}