₦airaland Forum

Collinz2:
it seems netbeans has high priority over eclipse. The tut i learning from uses netbeans which has some features eclipse dont have.

Fulaman198:
Hello ladies and gentlemen, before I post the assignment, I wanted to know how many of you are using an IDE (e.g. Netbeans, Eclipse, IntelliJ, etc.) I wanted to demonstrate a fun but small GUI project for you guys to keep you all motivated to learn Java that I would have you guys do. But in order to do so, you guys need an IDE.

I personally recommend Netbeans: https://netbeans.org/features/java/index.html

But I don't care if you use Eclipse or IntelliJ

Eclipse - http://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/keplersr1
IntelliJ - https://www.jetbrains.com/idea/#chooseYourEdition

pachman:
@Satmaniac,it works better dis way,we are really learning

pachman:
Did it work

Fulaman198:
Guys one of my friends used Java as a means to parse some live data from the world bank site about forestation around the world. The data was parsed from a CSV file and put out in the form of an applet using the UnfoldingMaps API/library to illustrate the data in the csv file. I just wanted to show this to you to keep you motivated about some of the things you can do in Java.

Fulaman198:
You are right his code won't work because he used a while loop instead of an if conditional statement.

@pachman, did you happen to test your code. If you change one thing, it would work fine.

pachman:
Lol,am also a beginner,just started classes and objects but i would start following op,he explains well,i have even saved his page sef

pachman:
You tried very well.. Thumbs up but it would gv a logical error if the user inputs three values less than 3..


Look at inside the while statement that I would put into for loop






import java.util.Scanner;

public class Array{

public static void main(String[]args){
int i=0;
int[]Scores;
double average=0;
int total=0;


System.out.println("This program collect Scores of students in ten subjects and also display their average.";
Scores = new int[10];

Scanner stdio = new Scanner(System.in);



for(i=0;i<Scores.length;i++){

System.out.println("Please enter Test Score" + i + ":";
Scores[i] = stdio.nextInt();
//you should use || and not &&..
while (Scores[i]<=-1 || Scores[i]>100){
System.out.println("Score is less than zero, or greater than 100, please, enter a valid score!";
Scores[i]=stdio.nextInt();
}






total+=Scores[i];


}



average=total/Scores.length;
System.out.println("Your average is:" + " " + average);






}


}

Fulaman198:
It's correct (briefly skimmed through it, but looks great), nicely done, you kind of took it a step further and instead asked the user for the number of tests they would ideally like to work it. Good job for going the extra km.

larisoft:
wow thanks for the thumbs up satmaniac. You can reach me on larypetero at gmail.com

larisoft:
mmm...FrankLampard. This one you are hailing me by my real name. I dey wonder how you come know the name oh. Thanks for stopping by my brother.

Fulaman198:
I'll post the assignment soon

ANTONINEUTRON:
L L

Fulaman198:
Hey my friend, I'll check it out

Fulaman198:
I'm sorry ladies and gentlemen, I have not forgotten about you and I will try and make it up to you tomorrow or Monday. I'm really sorry but I have been so busy. Please tolerate my absence. I will be posting again sometime soon. In the meantime, I hope that you are all doing well.

DjAndroid:
On glo, if you recharge any amount with *223*PIN# you will get the amount recharged plus the corresponding data and that same amount to call family and friends.

Eg. If you have 200 recharge card, recharge with *223, 200 naira will be credited to you plus 200mb plus another 200 to call family and friends. You can recharge just any amount and get that same amount in data.

On the screenshot below, I recharged #200 and got that.

Abagworo:
Biko stop spreading lies authoritatively. Thank God for Internet.

http://www.premiumtimesng.com/business/182543-nigerian-govt-borrowing-billions-to-pay-salaries-okonjo-iweala.html

http://www.pmnewsnigeria.com/2015/05/06/fg-borrows-n473bn-to-pay-salaries-okonjo-iweala/


The federal government has borrowed 473 billion naira to
meet up with recurrent expenditure including paying of
salaries while it is yet to release funds for capital projects.
According to Reuters, Nigeria has already used half the
borrowing allowance it has budgeted for and has not
released any funds for capital expenditure so far this year,
as lower oil prices eat into its revenues, the country’s
finance minister said on Tuesday.


“We have serious challenges,” Finance Minister Ngozi
Okonjo-Iweala said in an emailed statement. “Things have
been tough since the beginning of the year and they are
likely to remain so till the end of the year.”
The borrowed money has been spent to cover overhead,
including salaries, the minister said.
Lawmakers in Africa’s biggest economy and oil producer
last week passed a 4.49 trillion naira ($23 billion) budget
for 2015, 3.2 percent lower than last year’s spending plans.
It was forced to cut spending after global oil prices
slumped.


The budget took longer than usual getting through
parliament, worsening the cash squeeze, because of the
closely fought general elections in March, which saw
incumbent President Goodluck Jonathan defeated.
“As a result of the 50 percent decline in oil revenues, the
country has faced a difficult cash crunch … Out of the 882
billon naira budgetary provision for borrowing, the
government has borrowed 473 billion naira to meet up with
recurrent expenditure,” the finance ministry said.
Okonjo-Iweala had projected annual domestic borrowing
last year would fall to below 500 billion naira from 577
billion naira in 2013.


The borrowing requirement this year could crowd out
lending to the real economy, raising domestic interest rates
and yields on government bonds, which could hurt growth.
Forecasts for growth have already been lowered twice this
year.
The ministry said that inflation is still in single digits and
that the Nigerian economy is projected to grow by 4.8
percent this year.


Government revenues have shrunk sharply since oil sales
account for up to 80 percent of them and its currency, the
naira, has weakened drastically, despite the central bank’s
spending billions of U.S. dollars to prop it up.
The lack of funds for capital expenditure means badly
needed infrastructure development will be put on hold.
Funding for large projects such as bridges and roads had
already begun to dry up in 2014, forcing construction firms
companies with government contracts to cut back and fire
thousands of workers.

Sugarhugs:
Looooool, I'm innocent o, like innocent idibia

Fulaman198:
@Antonineutron and @the comedian satmaniac lol I will grade your assignments hopefully before tomorrow, I'm caught up in a storm of stuff right now. Please bare with me, I will hopefully have them graded no later than Wednesday.

ANTONINEUTRON:
It is not about changing from Python to Ruby.
All of them are thesame[C-based languages].
Since u wanna go into Web Development, I'll advice u go with HTML/CSS.

If u are done!
Go and practice.
When praticing, and u are getting better, u should start learning Javascript - Which is a Programming Language.

d fun part of learning Javascript at thesame time practicing HTML is dat Javascript code are implemented in HTML - <script></script> tag - which help u getting familiar with Html mre and mre.

If u are good with d three languages [HTML/CSS/JAVASCRIPT].
U can learn a scripting languages like python, Ruby, php, asp.Net e.t.c.

What will make ur learning of any scripting language fun is the knowledge of Javascript u earlier had.
So what u will nid to strt creating Web Apps with the scripting languages is their framework like Django(python), Ruby on Rails(Ruby) e.t.c

Wit knowledge of a SQL u re good 2 go!!

freeborn76:
These politicians just want to remain relevant; for all you know, the President may not have a hand in this. One thing I have come to accept about the Igbos is that the Biafran War left a deep sense of 'victimhood' on their psyche. Everything that happens is always rashly interpreted as victimisation or marginalisation. The sad thing about victim mentality is that you will NEVER rise above your supposed 'perpetrator'...that clearly explains why we may never have an Igbo president (it can happen in Biafra though). As little in population as the Cross River/Akwa Ibom axis are, they are more developed and more politically united, I will rather vote an Efik or Ibibio man for President than a sulking Igbo man...I don talk my own.

Fulaman198:
LOL no, the Goddess earlier asked some questions about it and being the foot slave/boy the gentleman that I try to be towards beautiful women, I tried to be courteous and answer the question(s).

With that said, I'm just waiting on the others to formulate correct solutions to the problems given, I see there has been an update to one of the answers, I will check it out soon, but right now reading books on machine learning and stuff. So I'll be back later. The next lesson will be about Arrays. So be ready.

Fulaman198:
Ok, so practically, I wanted you to use a Switch-case conditional structure within a for loop for the Converter programme.

In your programme, You iterate your list 5 times, but that is not the instructions of the programme, so let's go through it carefully. You first initialize tries to 0, then the while loop begins, with while tries is less than or equal to 5, do the following, but before you prompt the user, you increment tries by 1 each time. So what your programme is doing (I haven't actually tested it yet) is going through an iteration 6 times (but displays a list of choices to the user 5 times).

What you are supposed to do is keep displaying conversion choices for the user until they (the user) presses 5 to exit. To exit, you can use System.exit(0). The previous command allows the user to exit the programme without issues.

If you can, you and ANTONINEUTRON I would like for you to read back on Day 4 and practise with Switch case structures. Then, come back and do this programme again. Thanks!

Fulaman198:
In the future, when submitting assignments, please submit them in separate posts so that I can better advise you on each one separately. I will start off however with your first submission.

Your code simply won't work, I don't know if you have a compiler to test it out (I haven't tested it), but simply by reading your code, I can assess that your code has a lot of issues. For one, you initialise tries to 0, but in your code, it remains zero because your never increment tries. A lot of your code is truly unnecessary, things can be made much simpler by using a Switch-Case conditional structure (which we went over) within a while or do-while loop structure.

The Switch-Case conditional structure would handle user press events (as you know switch structures work with ints) so if the user presses 1, it does something, if the user presses 2, it does something else if the user presses 5, it exits the program. What i recommend doing is re-reading the section on conditional statements (which if I'm not mistaken should be day 4 in the tutorial). You would want to read the post on the Switch statement and the example(s) I gave.

In regards to your second programme, you don't want to set your while loop to a specific count. The while loop as you remember tests a boolean expression. Kindly think about the code before you write it, remember, what are the requirements for the programme? while the number is not the randomly generated number, then you execute commands within the while block. In addition, your count variable is not rightfully placed. I want you to figure out the first part of the programme though with the while statement. Your randomly generated number syntax is on point and correct. However, the rest of the programme needs work. Please use the critique I have given. Thanks!

Fulaman198:
Another assignment for Day 5:

I did not go over how to do random numbers, but I will briefly. Let's assume that you want to create a random number on a dice from 1 to 6, how would you go about doing that?

(int)(Math.random() * 6) + 1); //generate a random number between 1 and 6

I know that you see an int in parenthesis, this is what we call casting in programming when you practically convert a datatype to another datatype. By default, Math.random() method returns a double, so when you place an (int) in front of it, it converts that datatype to an int (we will discuss this a lot more later on the course).


So let's go over the random syntax. If I want to generate a random number between 0 and n, that expression would look something like this in Java:

(int)(Math.random() * n)

if I wanted to generate a random number between 1 and n (where like in the previous example n is any integer) it would look like this:

(int)((Math.random() * n) + 1)

Now for this assignment, I would like for you to create a guessing game that guesses a number between 1 and 100. Once the guess has been achieved, the computer outputs how many guesses it took to get to the random number. This game should not terminate until the user has guessed the correct answer.

Example: see output below to see how game works

Fulaman198:
In the code segment given, an integer variable 'i' is declared and initialised to 0. After that a while statement is performed with the expression (i < 20), we tell the computer to output to the console "This is a test " with the value of i next to it. After we output, we increment the value of i by one via the 'i++'.

The loop will repeat until i reaches 19 because the condition to be met in the expression is "i is less than 20".