通过用户输入创建文件

Question

I need to prompt the user for input and create a new file based on their input. For example, if a user entered data then data.txt should be a newly created file. I have my code written to take the name of the file, but how do I actually create the file? Any ideas are appreciated, thanks!

System.out.print("Please enter an output file: ");
Scanner k = new Scanner(System.in);
String fileName = k.nextLine();
str = fileName + ".txt";
try{
        File userFile = new File("?")
    }

Answer 1

Once you create the File object using File userFile = new File(fileName) , you can make sure the file exists by calling userFile.createNewFile() . This function will only create the file if it does not exist. If it does exists it will just use that file. If you care to check whether a file of that name already exists, the userFile.createNewFile() function will return true if it creates it, false if it already exists.