InstantFile.java

import java.io.*;   // for file input/output
import java.util.*; // for Scanner

public class InstantFile {

    /**
    *   Program:    InstantFile.java
    *   Purpose:    Type in text and save it to C:\temp as .txt notepad file
    *   Creator:    Chris Clarke
    *   Created:    27-31.12.2012
    *   Usage  :    Type "java InstantFile <directory>"
    *            to make a new directory, or locate an existing directory.
    *            Otherwise saves to C:\temp.
    */

    public static void main(String[] args) throws Exception {
        String saveDir = "temp";

        // creates new directory or opens an existing one.
        // name can be supplied as command line argument
        if (args.length > 0) saveDir = args[0];

        File theDir = new File(File.separator+saveDir);

        // if directory doesn't exist, make it
        if (!theDir.exists()) theDir.mkdir();

        String fileName; // doesn't include path
        Scanner scan = new Scanner (System.in);

        System.out.println("Create new file");
        System.out.println("Enter file name to Save As: ");
        fileName = scan.nextLine();

        if (!fileName.endsWith(".txt")) fileName += ".txt"; // append extension

        File theFile = new File(theDir + File.separator + fileName);

        if (theFile.exists()) {
            System.out.print("File "+theFile+" exists. Overwrite (y/n)? ");
            String ans = scan.nextLine();
            if (!ans.toLowerCase().startsWith("y")) {
                System.out.println("Exiting program...");
                System.exit(0);
            }// end if
        }// end if

        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter (theFile)));
        String theString = "";
        System.out.println("Enter lines of text [exit: type \'x\' on a new line]");
        do {
            theString = scan.nextLine(); // reads line of text from keybd
            if (!theString.equalsIgnoreCase("x")) {
                out.println(theString); // outputs one line at a time
            }// end if
        } while (!theString.equalsIgnoreCase("x"));

        out.close();
        System.out.println("File "+theFile+" saved.");
    }// end main
}// end class