code:

---

public class UseAccount {
	public static void main(String[] args) {
		Account myAccount;
		Account yourAccount;

	   myAccount = new Account();
	   yourAccount = new Account();

	   myAccount.name = "Wendy Blevins";
	   myAccount.address = " - - - - - -";
	   myAccount.balance = 834.27;

	   yourAccount.name = "Dennis Bennett";
	   yourAccount.address = "42 Oak Street";
	   yourAccount.balance = 55.63;

	  myAccount.display();
	  System.out.println();
	  yourAccount.display();
   }
}

---

code:

---

// HelloWorld.java: Your first Java Program
/**
 * This first program will simple print
 * "Hello World!" to the screen.
 */

 class HelloWorld {
	 public static void main (String[] args) {
		 System.out.println("Hello World!") ;
	 }
 }

---

Yeh yeh, it's not much, but it's the most *I've* ever known, hah...

See ya'll around... hopefully... oh beh.

------------------
"If it's made with Schmucker's Brand Rasberry Preserves, you know it's good."

quote:

---

Originally posted by Twinkle Toes:
Yay! I'm in my Java Prog. class right now, everyone! It's a happy, fun classL ... and I'm quite good at it, even though what we've done isn't much (and it's only about the 1st day taking the class). I won't be able to type much, seeing as I don't have *too* much free time. But I'll try... not that any of you care ! (Hehe, just kiddin') Anywho, here's what I've been doing:

code:

---

public class UseAccount {
	public static void main(String[] args) {
		Account myAccount;
		Account yourAccount;

	   myAccount = new Account();
	   yourAccount = new Account();

	   myAccount.name = "Wendy Blevins";
	   myAccount.address = " - - - - - -";
	   myAccount.balance = 834.27;

	   yourAccount.name = "Dennis Bennett";
	   yourAccount.address = "42 Oak Street";
	   yourAccount.balance = 55.63;

	  myAccount.display();
	  System.out.println();
	  yourAccount.display();
   }
}

---

code:

---

// HelloWorld.java: Your first Java Program
/**
 * This first program will simple print
 * "Hello World!" to the screen.
 */

 class HelloWorld {
	 public static void main (String[] args) {
		 System.out.println("Hello World!") ;
	 }
 }

---

My two 'teachers' explained some 'terms' inside the code I didn't know, i.e. args, and public void display.

Yeh yeh, it's not much, but it's the most *I've* ever known, hah...

See ya'll around... hopefully... oh beh.

---

You forgot the "import" statements. Those are important .

one more thing... �Oh beh�
never heard that one

Oki... me second day: right now we're calculating interest rates. I had to add this:

code:

---

System.out.print("The interest on");
	   System.out.print(myAccount.name);
	   System.out.print("'s account is $");
	   System.out.println(myAccount.getInterest(5.00));
	   System.out.println();
	   double yourInterestRate = 7.00;
	   double yourInterestAmount;
	   System.out.print("The interest on");
	   System.out.print(yourAccount.name);
	   System.out.print("'s account is $");
	   yourInterestAmount = yourAccount.getInterest(yourInterestRate);
	   System.out.println(yourInterestAmount);
	   System.out.println();

---

Exciting, isn't it!? Eh, it's quite easy... quite. It's almost getting on me nerves that I haven't made a mistake,.. heh. We also went over the 'getInterest' method's header. But the most... 'exciting' and involved part was when we had to modify the program on our own. First, we were made to change the Account class so it contained the interest rate as one of its properties (- make a label, no biggie). Then, we had to change the display method in the Account class to include the interest rate and the interest amount. The last step was to add the lines back to the UseAccount class to set the interest and call the display method of both the myAccount instance and the yourAccount instance. This is how it turned out:

code:

---

public class UseAccount {
	public static void main(String[] args) {
		Account myAccount;
		Account yourAccount;

	   myAccount = new Account();
	   yourAccount = new Account();

	   myAccount.name = "Wendy Blevins";
	   myAccount.address = "10295 Beep-Beep St.";
	   myAccount.balance = 834.27;
	   myAccount.interestRate = 5.0;

	   yourAccount.name = "Dennis Bennett";
	   yourAccount.address = "42 Oak Street";
	   yourAccount.balance = 55.63;
	   yourAccount.interestRate = 7.0;
	   myAccount.display();
	   yourAccount.display();

/*
	   System.out.print("The interest on");
	   System.out.print(myAccount.name);
	   System.out.print("'s account is $");
	   System.out.println(myAccount.getInterest(5.00));
	   System.out.println();
	   double yourInterestRate = 7.00;
	   double yourInterestAmount;
	   System.out.print("The interest on");
	   System.out.print(yourAccount.name);
	   System.out.print("'s account is $");
	   yourInterestAmount = yourAccount.getInterest(yourInterestRate);
	   System.out.println(yourInterestAmount);
	   System.out.println();
*/
   }
}

---

------------------
"If it's made with Schmucker's Brand Rasberry Preserves, you know it's good."

After camp you should check out Python. The equivalent of your code in Python would be:

code:

---

# note: pseudocode, not tested

# this imports the account class with two methods: newAccount and 
# display. 
import TwinkleToesAccounts

# This method uses the account class.
def UseAccount:

  # create accounts
  myAccount = account.newAccount()
  yourAccount = account.newAccount()
  
  # initialize myAccount
  myAccount.name     = "Wendy Blevins"
  myAccount.address  = "123 Blah St."
  myAccount.balance  = 834.27

  # initialize yourAccount
  yourAccount.name     = "Dennis Bennett"
  yourAccount.address  = "42 Oak St."
  yourAccount.balance  = 55.83

  # display accounts
  myAccount.display()
  print '\n'
  yourAccount.display()

# executes UseAccount
UseAccount

---

Notice a few differences. First: not a lot of syntactical markers. That's because Python uses white space to indicate structures, rather than semicolons and braces.

Second: no need to define a separate class just to handle this function.

Hope this helps

Alrig', well today we created an Address Book:

code:

---

public class UseAddress {
	public static void main(String[] args)  {

		Address myAddress;
		Address yourAddress;
		myAddress = new Address();
		yourAddress = new Address();
		myAddress.name = "Wendy Blevins";
		myAddress.address = "10115 Holly Drive";
		myAddress.email = "[email protected]";
		myAddress.phonenumber = "355 6986";

		yourAddress.name = "Jessica Cermak";
		yourAddress.address = "123 Fake Street";
		yourAddress.email = "[email protected]";
		yourAddress.phonenumber = "355 6778";
		yourAddress.name = "Cassandra Dietman";
		yourAddress.address = "463 Monkey Socks Avenue";
		yourAddress.email = "[email protected]";
		yourAddress.phonenumber = "475 9657";
		yourAddress.name = "Scott McKee";
		yourAddress.address = "345 Blah-Blah Land";
		yourAddress.email = "[email protected]";
		yourAddress.phonenumber = "281 3567";
		myAddress.display();
		yourAddress.display();
	}
}

---

code:

---

import java.io.*;
class Guess  {
	int min;
	int max;
	int theNumber;
	String prompt = "> ";
	BufferedReader in = new BufferedReader (new InputStreamReader(System.in));
	public Guess(int low, int high) {
	this.min = low;
	this.max = high;
	this.theNumber = getRandom(this.min, this.max);
}
public int getRandom(int minimum, int maximum)  {
	return (int) ((Math.random() * (maximum-minimum+1)) + (minimum));
}
public int getInt() {
	int number = 0;
	String temp;
	boolean gotNumber = false;
	while(!gotNumber)  {
		System.out.print(prompt);
		try  {
			temp = in.readLine ();
			number = Integer.parseInt (temp);
			gotNumber = true;
		}
		catch(NumberFormatException e)  {
			gotNumber = false;
			System.out.println("That didn't look like an integer number, try again.");
		}
		catch(IOException e) {
			System.out.println("Error getting input: " + e. toString());
			gotNumber = false;
		}
	}
	return number;
}
public void start()  {
	String line = "";
	boolean correct = false;
	int guess;
	System.out.println("I am thinking of a number between " + this.min + " and " + this.max + ".");
	while(!correct)  {
		System.out.println("Enter your guess.");
		guess = getInt();
		if(guess < theNumber)  {
			System.out.println("Your guess is too low.");
		}
		if(guess > theNumber)  {
			System.out.println("Your guess is too high.");
		}
		if(guess == theNumber) {
			System.out.println("Correct!");
			correct = true;
		}
	}
}
public static void main(String[] args)  {
	int low = 0;
	int high = 100;
	Guess game = new Guess(low, high);
	game.start();
}
}

---

To me, this is better than me engineering class! And we're making robots in there, haha...

Oy! GM, sorry I forgot about your question: I asked one of me 'teachers' and he said he used 4 or 5 different books to teach us all this. He didn't remember what they were all called except two.

But *I* don't remember the exact title and author from memory , but I can find them in The Bookie (student book store) - I was thinking about buying one so I could continue learning more aboot Java...

I love you... stop worrying so much!

First thing is, coding isn't a race. The object is to do it right .. which means that the code runs correctly, is more or less foolproof, and is readable, at least in my book. Other coders will disagree with me here.

Second, you're indenting with tabs from the look of things. I would try indenting with either two or four spaces. I'm not sure what kind of editor you're using, but your instructor should be able to show you how to set your tab key to produce two or four spaces instead. This can make your code a lot more readable. (Research shows that four spaces is best; I use two because it suits my eyes better. Your mileage may vary.) I would also indent the stuff just inside the class (the fields and methods) by one level (two spaces). Otherwise your indentation looks great.

Third, you might want to get into the habit of adding comments. Commented code is a lot easier to understand for a human being than uncommented code. Some coders *start* by writing comments and *then* add code later; this helps them to think through complex problems. I added a comment for every function, a comment for every variable, and comments for blocks of code that might take more than a second to figure out.

Fourth, I noticed that you used three if statements: one for guess < number, one for guess > number, one for guess == number. I turned this into an if-then-else statement. This way you do one or two compares instead of three. This isn't a big deal for this code, but if this were the 10% of your code that runs 70% of the time, the efficiency increase could be substantial.

The results are below:

code:

---

//---------------------------------------------
// class Guess
// 
// Plays a number guessing game with the user.
//---------------------------------------------
import java.io.*;
class Guess {
  int min;              // minimum guess so far; at least 0
  int max;              // maximum guess so far; at most 100
  int theNumber;        // the number that the user tries to guess!
  String prompt = "> "; // string to prompt the user for a guess.
  BufferedReader in = new BufferedReader (new InputStreamReader(System.in));
      // used to read user input

  //------------------------------------------
  // constructor 
  // public Guess (int, int) 
  //
  // Sets variables for the start of the game.
  //-------------------------------------------
  public Guess(int low, int high) {
    this.min = low;
    this.max = high;
    this.theNumber = getRandom(this.min, this.max);
  }

  //--------------------------------------------
  // public int getRandom (int, int)
  // 
  // returns a random integer between 
  // minimum and maximum
  //--------------------------------------------
  public int getRandom(int minimum, int maximum) {
    return (int) ((Math.random() * (maximum-minimum+1)) + (minimum));
  }

  //-------------------------------------------
  // public int getInt()
  // 
  // Gets an integer guess from the user's input;
  // does sanity checks.
  //-------------------------------------------
  public int getInt() {
    int number = 0; // hold's the number that the user entered (we hope)
    String temp;  // holds the user's input.
    boolean gotNumber = false; // will be set to TRUE when we have an int.
    // repeat until we get a number.
    while(!gotNumber) {
      System.out.print(prompt);

      // try to get a number
      try {
        temp = in.readLine ();
        number = Integer.parseInt (temp);
        gotNumber = true;

      // doesn't seem to be a number; try again.
      } catch(NumberFormatException e) {
        gotNumber = false;
        System.out.println("That didn't look like an integer number, try again.");

      // got an IO error. Try again.
      } catch(IOException e) {
        System.out.println("Error getting input: " + e. toString());
        gotNumber = false;
      }
    }
    return number;
  }

  //---------------------------------
  // public void start()
  //
  // Start the game and repeat until
  // the number has been guessed.
  //---------------------------------
  public void start() {
    String line = ""; // not sure what this does .. delete?
    boolean correct = false; // becomes TRUE when the user guesses the number
    int guess; // the user's guess
    System.out.println("I am thinking of a number between " + this.min + " and " + this.max + ".");

    // repeat until the number is guessed
    while(!correct) {
      System.out.println("Enter your guess.");
      guess = getInt();

      if(guess < theNumber) {
        System.out.println("Your guess is too low.");
      } else if(guess > theNumber) {
        System.out.println("Your guess is too high.");
      } else /* (guess == theNumber) */ {
        System.out.println("Correct!");
        correct = true;
      }
    }
  }

  //--------------------------------------------
  // public static void main(String[])
  //
  // Initializes and plays the game when we 
  // execute this class.
  //---------------------------------------------
  public static void main(String[] args) {
    int low = 0;
    int high = 100;
    Guess game = new Guess(low, high);
    game.start();
  }
}

---

The style that I use here is what works for me and for some teams that I've worked with. Please note that some geeks are going to disagree with the my coding style. In fact, I hope they do; there are many different styles out there, and our disagreements are your learning opportunities. The basic elements are still the same, however.

Hope this helps.

code:

---

import java.io.*;
class Guess  {
	int min;
	int max;
	int theNumber;
	String prompt = "> ";
	BufferedReader in = new BufferedReader (new InputStreamReader(System.in));
	public Guess(int low, int high) {
	this.min = low;
	this.max = high;
	this.theNumber = getRandom(this.min, this.max);
}
public int getRandom(int minimum, int maximum)  {
	return (int) ((Math.random() * (maximum-minimum+1)) + (minimum));
}
public int getInt() {
	int number = 0;
	String temp;
	boolean gotNumber = false;
	while(!gotNumber)  {
		System.out.print(prompt);
		try  {
			temp = in.readLine ();
			number = Integer.parseInt (temp);
			gotNumber = true;
		}
		catch(NumberFormatException e)  {
			gotNumber = false;
			System.out.println("That didn't look like an integer number, you're either drunk, a crackhead, or have really messed up fingers. Try again.");
		}
		catch(IOException e) {
			System.out.println("Error getting input: " + e. toString());
			gotNumber = false;
		}
	}
	return number;
}
public void start()  {
	String line = "";
	boolean correct = false;
	int guess;
	int numberofguesses = 0;
	System.out.println("I am thinking of a number between " + this.min + " and " + this.max + ".");
	while(!correct)  {
		System.out.println("Enter your guess, NOW! Now, you incompitent monkey!");
		guess = getInt();
		if(guess < theNumber)  {
			numberofguesses++;
			tries = tries + 1;
			System.out.println("Your guess is obviousely too low. No one will ever believe your theory on how you created the rubber ball.");
		}
		if(guess > theNumber)  {
			numberofguesses++;
			tries = tries + 1;
			System.out.println("Your guess is too high. So are you.");
		}
		if(guess == theNumber) {
			numberofguesses++;
			tries = tries + 1;
			System.out.println("OOH, you got it right. After all those tries, ya big ape.");
			correct = true;
			System.out.println("It took you " + numberofguesses + " guesses. You must have an IQ of 14, ya pansy!");
		}
	}
}
public static void main(String[] args)  {
	int low = 0;
	int high = 100;
	Guess game = new Guess(low, high);
	game.start();
}
}

---

code:

---

import java.io.*;
public class Calculator  {

	BufferedReader in;
	String prompt = "> ";
	public Calculator()  {
		in = new BufferedReader(new InputStreamReader(System.in));
	}
	public void displayMenu()  {
		System.out.println("\n\n");
		System.out.println("Select a number: ");
		System.out.println("-----------------");
		System.out.println("1 Addition");
		System.out.println("\n9 - Quit");
		System.out.println("-----------------");
	}
	public String  getStringInput() throws IOException  {
		System.out.print(prompt);
		String temp = "";
		try  {
			temp = in.readLine();
		}
		catch(IOException e) {
			System.out.println("Error getting input: " + e.toString());
		}
		return temp;
	}
	public int getIntInput()  {
		int number = 0;
		String temp;
		boolean gotNumber = false;
		while(!gotNumber)  {
			System.out.print(prompt);
			try {
				temp = in.readLine();
				number = Integer.parseInt(temp);
				gotNumber = true;
			}
			catch(NumberFormatException e) {
				gotNumber = false;
			System.out.println("That didn't look like an integer number, try again.");
		}
		catch(IOException e)  {
			System.out.println("Error getting input: " + e.toString());
		}
	}
	return number;
}
public void doAddition()  {
	int n1, n2;
	System.out.println("\n");
	System.out.println("Enter the first number:  ");
	n1 = getIntInput();
	System.out.println("Enter the second number: ");
	n2 = getIntInput();
	System.out.println("Results: " + n1 + " + " + n2 + " = " + (n1 + n2));
}
public static void main (String[] args) throws IOException {
	String menuSelection = "";
	Calculator calc = new Calculator();
	boolean running = true;
	while(running) {
		calc.displayMenu();
		menuSelection = calc.getStringInput();
		if(menuSelection.equals("1")) {
			calc.doAddition();
		}
		else if(menuSelection.equals("9"))  {
			running = false;
		}
		else  {
			System.out.println("That doesn't look like anything on the menu, try again.");
		}
	}
}
}

---

But look what I made!

()()
(0.0)
(')(')o HEY! ME 666TH POST!! LOOK AT THAT, BEES!

------------------
"If it's made with Schmucker's Brand Rasberry Preserves, you know it's good."

code:

---

...
while(x)
{
     if(y)
     {
     }
}
public func(int a, int b, //if it were too long
     inc c)
{
}
...

---

quote:

---

Originally posted by maxomai:
Interesting Nekomatic, I'm not familiar with this tool. What is it?

---

LabVIEW. It's a graphical programming language made by National Instruments and oriented towards test/measurement/control.

I started using it a couple of years ago when I had to get an automated test up and running and didn't fancy learning C or VB (or waiting for someone else to do the software for me) and it's very easy for a novice to get to grips with. It's very good for applications where the user interface is fairly constant and the data input and output requirements are fairly well known - such as test/measurement/control - but it wouldn't be the best tool for writing something like a word processor, though you probably could if you were bloody-minded enough. Two of its real strengths are that you rarely have to worry about memory management and that it automatically handles scheduling of parallel tasks - making your program do 'two things at once' is literally as easy as creating the two bits of code on the same diagram.

The development system (available on Windows, Mac, Linux, Sun, HPUX) is in the $1000-3000 range but there is a slightly limited 'student edition' for Windows and Mac available as a book/CD package for about $50-60. You're supposed to be a student, but Amazon don't check

quote:

---

Originally posted by GameMaster:
I prefer the deep tabs, and absolutly hate Emacs auto-formatting... I am nit picky about the opening and closing braces being lined up with the code before (the signature for the function or class, and the conditions for if, fors, whiles...). if it happens to require me to wrap a line (instead of scrolling) so be it. I'll find a logical break and add an extra tab.

---

I used to be nit-picky that way, then I realized that the point isn't to follow a standard as much as it is to make the code legible to a human being. There's also a java-specific convention of putting starting braces at the end of the line that has the function signature / conditional statement / caught exception / try statement / etc. I think this looks better in the long run; consider:

code:

---

if (this.groovy) 
{
    System.out.println("groovy");
} 
else if (this.cool) 
{
    System.out.println("cool");
} 
else 
{
    System.out.println("bogus");
}

---

vs.

code:

---

if (this.groovy) {
    System.out.println("groovy");
} else if (this.cool) {
    System.out.println("cool");
} else {
    System.out.println("bogus");
}

---