A simple program to keep track of money in various wallets.

Wallet.java

This is a simple program that will keep track of how much money you have in various "Wallets".
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import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.PrintWriter;

class Wallet {

    private double balence;
    private String name;

    /**
     * @Constructor
     */
    public Wallet(String inputName) {
       name = inputName;
       load();
    }

    public double getBalence() {
        return balence;
    }

    /**
     * This will add (or subtract with negitive numbers) the current balence.
     */
    public double add(double num) {
        return balence += num;
    }

    /**
     * This will load the wallet based on it's name from a file.
     */
    private void load() {
       try {
          BufferedReader reader = new BufferedReader(new FileReader(name + ".wal"));
          String line;
          balence = 0;

          while((line = reader.readLine()) != null) {
             balence += Double.parseDouble(line);
          }

          reader.close();

       } catch (java.io.FileNotFoundException e) {
          balence = 0;
       } catch (Exception e) {
          System.out.println("ERROR: loading wallet file ->" + e);
       }
    }

    /**
     * this will write the the object to a file named after itself.
     */
    public void save() {
       try {
          PrintWriter fout = new PrintWriter( new BufferedWriter (new FileWriter(name + ".wal")));

          fout.print(balence);

          fout.close();

       } catch (Exception e) {
          System.out.println("ERROR:saving wallet file -> " + e);
       }
    }

    /**
     * This will display the balence of the wallet.
     */
    public void display() {
       System.out.println(name + " has  $ " + balence);
    }

    /**
      This will test out the Wallet object
     */
    public static void main(String[] args) {

       if (args.length >= 1) {
          if (args[0].equals("-h")) {
             System.out.println("Wallet: a simple command line tracker of expenses.");
             System.out.println("\nHelp:");
             System.out.println("\t To view a wallet: \t$ Java Wallet myWallet");
             System.out.println("\t To add to a wallet: \t$ Java Wallet myWallet 10.00");
             System.out.println("\t To subtract from a wallet: \t$ Java Wallet myWallet -5.00");
             System.out.println("\n NOTE: new wallets will be created if they do not exist.");
             return;
          }

          String name = args[0];
          Wallet mywallet = new Wallet(name);
          if (args.length > 1) {
             mywallet.add(Double.parseDouble(args[1]));
          }
          mywallet.display();
          mywallet.save();

       } else {
          System.out.println("for help do $ java Wallet -h");
       }
    }
}