₦airaland Forum

Fulaman198:
I will update this thread with a tutorial on iteration hopefully Friday or Saturday and have your assignments that you guys have submitted hopefully by Thursday. Iteration will cover for loops, do-while loops, and while loops. If you want, you can read ahead now before I do the tutorial and give you guys more practise assignments. Best of luck!

Fulaman198:
This assignment must be tough for you guys. No one has turned it in yet.

asalimpo:
if the op doesnt mind or his student ...

That statement creates a package - a group of related classes grouped together as a unit.
the package can be imported for use in other programs , facilitating code-reuse and avoiding name collision conflicts.
e.g if you have a class with the same name as a native class, you can differentiate yours and avoid confusing the compiler by placing yours in a package.

When compiled, a folder is created in the order of the package name. subfolders appear according to their
dot separation in the package name.
e.g
for the class SwitchUsage
in package
com.fullermannairalandtutorial
the following folder structure will be created com/fullermannairalandtutorials
with the class SwitchUsage in the last folder , fullermannairalandtutorials .


to use this class in other programs, you use the import statement.

like this:
import com.fullermantutorials.SwitchUsage -

if you are importing more classes but dont want to specify every class by name u , use the wildcard character:
e.g
you'll often see codes like this:
import java.util.*
That statement imports all the classes in the java.util package.

by convention , package names are specified in lowercase letters.
classes, in uppercase.
You can't create a package that begins with java - that name is reserved to avoid confusion and clashes with the pre-built java packages.

Fulaman198:
Day 4 Assignment:

Read the following documentation in order to supplement what you have learned today from this tutorial:

https://docs.oracle.com/javase/tutorial/java/nutsandbolts/if.html
https://docs.oracle.com/javase/tutorial/java/nutsandbolts/switch.html

Your assignments are as follows:

1. Write a Programme that takes the grade programme that was posted earlier today and transform it using the Switch statement. The resulting output should be the same as with the if, else if and else statements

2. Write a programme that asks the user to enter the weight of a vehicle in kg. 2.2 lbs = 1 kg in case you don't know. Based on the table below, write your programme. You can use either a Switch statement or an if statement. That's up to you, but personally for this problem I would use a Switch statement.

Fulaman198:
Alternatively, there is another way to write this programme. The alternative method to writing it is with a switch statement. The switch statement is another way to test conditional statements. The Switch statement works with byte, short, char and int primitive types. it also works with enum types which we will get to later, the String class and other classes capable of wrapping primitive types.

Let's say for instance that I would like to check the number of the month and correlate it to the proper month, how would I do that with a Switch statement? Very simply put like so:

package com.fulamannairalandtutorials;
import java.util.Scanner; //import a scanner object

public class SwitchUsage {
    public static void main(String[] args) {
        Scanner stdio = new Scanner(System.in );
        int theMonth;
        
        System.out.println("Please enter a numerical value for month" );
        theMonth = stdio.nextInt();
        
        switch(theMonth) {
            case 1: System.out.println("The Month is January." );
            break;
            
            case 2: System.out.println("The Month is February." );
            break;
            
            case 3: System.out.println("The Month is March." );
            break;
            
            case 4: System.out.println("The Month is April." );
            break;
            
            case 5: System.out.println("The Month is May." );
            break;
            
            case 6: System.out.println("The Month is June." );
            break;
            
            case 7: System.out.println("The Month is July." );
            break;
            
            case 8: System.out.println("The Month is August." );
            break;
            
            case 9: System.out.println("The Month is Septembre." );
            break;
            
            case 10: System.out.println("The Month is Octobre." );
            break;
            
            case 11: System.out.println("The Month is Novembre." );
            break;
            
            case 12: System.out.println("The Month is Decembre." );
            break;
            
            default: System.out.println("You did not enter a valid number" );
            break;      
        }
        
    }
}

Fulaman198:
I made an edit to the original post, this post now has operators and their respective functions and what they do. Enjoy and good night!

Fulaman198:
Yes, I'll update this thread again soon. Don't worry.

asalimpo:
gosh.. see how happy these students are ..
Bubbling with joy to learn..
What is the op feeding them? weed and coffee? java beans and cannabis?

seunny4lif:

Amen but dat thing dey confusing

seunny4lif:
I dey battle OOP now

seunny4lif:
You are welcome Meself na beginner I be

satmaniac:
I got some books on JAVA last three weeks and I have been reading about JAVA as well as practicing it. I once take my problem to larisoft's thread where he talked about how to hire a good programmer. So, yes this is my first time programming. Why do you ask?

Fulaman198:
Is this your first time programming in Java? Just asking before I go to sleep.

seunny4lif:

You try but writing programming in hand
It's a none going area
import java.until.Scanner

Fulaman198:
LOL sure no problem, you didn't do a bad job. You just made some syntactical errors that are easily addressed. As aforementioned, your logic is correct.

Fulaman198:
I think you know why your programme won't compile. Just curious do you have a compiler to test the code? It looks like it was written by hand without actually going through the compilation process. There are lots of bugs caused by syntax errors. Your logic is correct, but the code needs some minor corrections. Sorry, I'm a stern and tough grader.

Fulaman198:
Today was a rather short lesson on input and output and further information on the JVM. In the next tutorial, We are going to be learning about Conditional Statements (if - else if - else) and switch and we will be writing a programme that involves the utilisation of conditional statements.

As for your assignment, I would like for you to write a programme that prompts a student user for their name, and 4 test scores. With the information gained from the 4 test scores, I would like for you to calculate the median (average) of the 4 test scores and output it back to the user alongside their name.

Example: "Onyewu, your average test score is 84.8" for the output. Please use type double for the test scores and not int. Thank you!

System.out.println("Pls, enter your English test
score";

System.out.println("Pls, enter your Physics
score";

System.out.println("Pls, Enter your Chemistry
score";

Fulaman198:
It's correct although you used different values than what was assigned. Good job though regardless.

asalimpo:
because there is no package "java.util.math"

there is also no package named "java.lang.math"
what you have is a class "Math" in package "java.lang" . its full canonical name is "java.lang.Math"

dhtml18:
and also save him from committing suicide. . .

larisoft:
I will really appreciate the input of senior developers on this forumn on their hiring experiences in Nigeria, as well as steps in this article they do not agree with.