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Apr 2nd, 2009

creating "FOR LOOP"

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hello i am stuk on this piece of work which i have no understaning at all!!! this is the question could someone please show me or give me gudlines in how to do it!!!

Write a Java application that asks a user for their name and displays it in a ‘box’ similar to that you implemented in week 1, exercise 1. For this application, you use a for loop to repeated printing * and space characters to result in the boundaries and padding, respectively. Below is what your application should produce.

Please enter your name> king 786

/********\
| |
| king 786 |
| |
\********/

The number of characters (* or space) is determined by the length of the name entered (hint: use String length method). Remember that you have to add 2 to this length in order to take into account the space either side of the name.

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king_786

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Apr 2nd, 2009

Re: creating "FOR LOOP"

Example of a For-loop:

Java Syntax (Toggle Plain Text)
for(int i = 0; i < 3; i++)
{
    /* This loop will repeat 3 times */
}
for(int i = 0; i < 3; i++)
{
    /* This loop will repeat 3 times */
}

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Apr 2nd, 2009

Re: creating "FOR LOOP"

but how do i incorporate this in to the scenario???

king_786

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Apr 2nd, 2009

Re: creating "FOR LOOP"

Obviously instead of 3 you will have the number of '*' you want to print.
And in the for-loop use the method:

Java Syntax (Toggle Plain Text)
System.out.print("");
System.out.print("");

The above method doesn't change line.
Of course when the loop is done remember to call the one that changes line in order to continue writing at the next line.

Also you can call this with no arguments:

Java Syntax (Toggle Plain Text)
System.out.println();
System.out.println();

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Apr 2nd, 2009

Re: creating "FOR LOOP"

WHY did you double post?

http://www.daniweb.com/forums/thread184806.html

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Re: creating "FOR LOOP"

And your teacher is trying to tell you that the String's length method will tell you how long their name is. So what everyone else here has said applies, let me put it all together for you:

1. Prompt the user, asking them what their name is
2. Use a Scanner Object and the readLine method to read their name into a String
3. use the length() method of the String class to figure out how long their name is. Lets call this "nameLength"
4. Use a for loop to print out the *'s. Inside the for loop, have an if statement that says for (int i = 0; i < nameLength; i++){
//print the *'s and other stuff in here
}

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Apr 3rd, 2009

Re: creating "FOR LOOP"

Quote ...

The number of characters (* or space) is determined by the length of the name entered (hint: use String length method). Remember that you have to add 2 to this length in order to take into account the space either side of the name.

Also don't forget to add 2 as stated above, and you will need to play with the methods:

Java Syntax (Toggle Plain Text)
System.out.println();
System.out.print();
System.out.println();
System.out.print();

As I said, one changes line the other doesn't. So decide which one goes inside the loop and which doesn't in order to have this result:

/***********\

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Apr 3rd, 2009

Re: creating "FOR LOOP"

buh i have no idea in how 2 do this??

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Apr 3rd, 2009

Re: creating "FOR LOOP"

Click to Expand / Collapse Quote originally posted by king_786 ...

buh i have no idea in how 2 do this??

Quote ...

We can only show you the door; you are the one that has to go through it

Meaning that we have already told you which methods to use and how. You need to think the way. You already know the commands. Only the System.out. ..... and the for-loop which was explained are needed. Coding it is easy. But you need to think how to use the commands, we cannot post the solution, just use the command to print what is required.

Also, at first if you don't know how to read the input try using the:
> argument array of the main:
> public static void main (String [] args)

Or put a value to a variable and try work with it

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Re: creating "FOR LOOP"

Alot of information has been given and you should be able to get it working. just do some trial and error that is the best way with programming.

also you can use
BufferedReader to get the users input that is how we were taught at uni.
check the internet there are lots of examples for it. please let us know how you get on

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