[SOLVED] Need a program for learning purposes.

[Zebra]

I need a program that contains a loop, if-then, and an array. If somebody can come up with any program with all of those it would be greatly appreciated. It doesn't matter what it is about. Try to keep it simple and not to advanced code. I need it to study. Thanks.

[sanjeevtarar]

Do you need an simple example program that demonstrate these..??

[DonCash]

Hey Zebra, here is something simple for you:

public class Zebra {

	public static void main(String[] args) {
		
		// Declaring the array
		String name[];
		name = new String[5];
		
		// Setting the array values
		name[0] = "Bill";
		name[1] = "Mark";
		name[2] = "Steve";
		name[3] = "Craig";
		name[4] = "Jamie";
		
		// For loop
		for (int i = 0; i < name.length; i++)
		{
			// If-then statement
			if (name[i] == "Jamie")
			{
				System.out.println(name[i] + " knows Java!");
			}
		}
	}
}

Output:

Jamie knows Java!

[Zebra]

Thanks so much! I will study this and tell you how I do on my next test.

+rep

[DonCash]

No problem Zerba.

Have you looked at the Sun Java Tutorials? Its a brilliant place to learn.

The Java™ Tutorials

[Eranga]

Why do you guys use the way like this,

String name[];

Why don't you use,

String[] name;

Because, in my suggestion way anyone can easily say that name is a reference to String array object. Make more sense with other primitives, isn't it?

[sanjeevtarar]

Well said Eranga.

[DonCash]

Suppose its however you learnt it. I tend to do it that way round because thats how I was taught. Its habbit now!

Both ways work fine so its personal preference...

[Eranga]

Both ways work fine so its personal preference...

Yes Don, it's true. Both way is fine. But I'm not courage to use that way. :)

[DonCash]

Its just like in the main method.

Sometimes in books & tutorials you see it like this:

public static void main(String[] args) {
}

And sometimes you see it like this:

public static void main(String args[]) {
}

Suppose the correct convention is to have it as:

String[]

Ill try to do that in the future to keep you purists happy! lol

[Eranga]

Sure Don, I have seen both of that way. :) But pal, different people get use of with different coding styles.

Ill try to do that in the future to keep you purists happy! lol

Always :p

[Zebra]

I have a question is the if statement an "if-then" in this code below...or just an if?

// If-then statement
			if (name[i] == "Alex")
			{
				System.out.println(name[i] + " knows Java!");
			}
		}
	}
}

and what does the for-loop do in this code?

//the for loop
		for (int i = 0; i < name.length; i++)
		{
			//the If-then statement
			if (name[i] == "Alex")
			{
				System.out.println(name[i] + " knows Java!");
			}
		}
	}
}

[DonCash]

Yeah its basically a if-then statement...

It means if the IF statement is true, THEN do something.

So if

name[i] == Alex

(which is true)

THEN

System.out.println(name[i] + " knows Java!");

The for loop is looping through all the array values. It starts at 0 and loops for as many values as there are in the 'name' array.

Thats what name.length means.

[iykepiccolo]

can someone help me out on how to install and use any database program with java. basically MS SQL

[DonCash]

iykepiccolo - Please don't post an unrelated question here!!! Start a new thread. Thats what these forums are for.

[Eranga]

The for loop is looping through all the array values. It starts at 0 and loops for as many values as there are in the 'name' array.

In further explanation, array element start indexing from 0. So the last index is (number_of_array_elements - 1). This is common for more languages. ;)

[Zebra]

Thanks guys.

Can somebody kindly make a little more advanced program with the same requirements. Please if you have time.

[DonCash]

Zebra, using the code above, you should try to program something yourself. All the basics are there... See what you can come up with and post back here!! We will help you if you get stuck.

[Zebra]

Ok nevermind. It was a study guide for my friend. S, if somebody could make one then it would be appreciated. thanks.

[Eranga]

Ok, what you mean an advanced program. What you expecting there.

As far I believe, this is very very simple code. Actually I don't like to say it as an application either. How about real world application. May be a server application which is able to handle millions of clients in a second...

Anyway, clarify more what you are looking for?