I think it's better to teach the basics of Java with the Netbeans IDE+Java pack.

Am also working on attemptin the assignment. But i have not installed jdk. upto do that this weekend.

@sbucareer, can u please tell me how to compile, i dont knw how to. I downloaded the TXTPAd which is an IDE and i download the Java SDK and i already did the configuration at the advance setup. But how will i compile?, i already copypaste the codes on to the IDE txtpad. so how do i compile ooooo.
someone tell me or else,, lol
I want to learn, am a dummy plzzzzzzzzzzzzzzzzz
give me a step by step instruction

go to ur java directory and run this command;

example Note C:

C:\java> javac YourJavaFile.java

after that command u will have a YourJavaFile.class which is runable by the system

gbenga, this is what I did. Inside Textpad, go to Configure ---> Preferences --->

gbenga, this is what I did.  Inside Textpad, go to Configure ---> Preferences --->
Click on Tools---> Complie Java
Click on Apply ---> ok

Then u 'll go back to Txtpad, after writing ur program.
Go to Tools and click on Compile Java, its a piece of cake, right, sbucareer, I am attempting ur assignment, shld be through @ the weekend.

.

[size=24pt][center]Tutorial addition[/size][/center]


Let look at Java Reserved keywords. What is java reserved work. These words are reserved as you cannot use any of these words as names in your programs. Remember that true, false, and null are not keywords but they are reserved words, so you cannot use them as names in your programs either.

What are names. It is refered to variable names, like in our above Radio software example, frequency and volume are variable names that holds information about the Object called Radio. Remember that variable names are devlopers choice, and can be confusing if a devloper do not choose appropriate name depicting the issue at hand.

Therefore java has come up with reserved keyword that can never be used or allowd to be used by developer to asigning their variable the reserved keywords. It is equally important you understand these keywords as you program will fail to compile if you used them.


[table]

[tr]
[td]abstract[/td][td]continue[/td][td]for[/td][td]new[/td][td]switch [/td][td][/td]
[/tr]

[tr]
[td]assert[/td][td]default[/td][td]goto[/td][td]package[/td][td]synchronized[/td][td]boolean[/td]
[/tr]

[tr]
[td] do[/td][td]if[/td][td]private[/td][td]this[/td][td]break[/td][td]double[/td]
[/tr]

[tr]
[td]implements[/td] [td]protected[/td][td]throw[/td][td]byte[/td][td]else[/td][td]import [/td]
[/tr]

[tr]
[td]public[/td] [td]case[/td][td]enum[/td][td]instanceof[/td][td]return[/td][td]transient [/td]
[/tr]

[tr]
[td]catch[/td] [td]extends[/td][td]int[/td][td]short[/td][td]try[/td][td]char[/td]
[/tr]

[tr][td]super[/td][td]while[/td][td]native[/td][td]class[/td][td]finally[/td]
[/tr]

[/table]

The keywords above are the ones I can remember, if you need to know all the keywords vist here

Have just got home now and do exactly waht i read. but i think am missing a point coz i just wasnt able to compile despite that i did conmfigure the preferences

b

sbucareer:
Ok, gbenga explain to me the problems you are having with texpad?

That is why I suggested the use of the Netbeans IDE. Problems with Java should be about Java itself and not "Textpad" or other third party tools. With Netbeans, compiling your program is as easy as pressing a function key!

sbucareer, could u please, help me debug this error-just 1 error in compiling.
Meanwhile, I must just appreciate ur effort and ur patience.

@olat,

Your physical file is named "Helloworld"
Your class is named "HelloWorld".

They both should be named "HelloWorld". Java is case-sensitive

@mochafella,

Thanx bros, I have done that and it works. So cool, I'm moving on to sbucareer assignment.

its funny when i discovered that the java compiler that i have been having problem to download comes with dreamweaver. I just discovered it to ("sunday"). and since tried to compiled the hello world app. i only save the file to the bin directory where the javac.exe exist and compile then ran, it worked straight away with textpad.

Java's cool. Am going with the assignment.

Hey, good job with the teaching SBU!

I do however think teaching everyone the basics of C would have been better, than expanding to C++ before touching Java.
That way people appreciate all three languages and see the difference between the former and java.

I've got over 4 years experience with C and 2 with C++ (software and embedded). I'm willing to help if you need anything.

We probably should do a seperate one for C.

@gleyo, we wouldn't mind learning from you too.
Its so sweet that u guyz, r willing to doll out from your knowledge and experience.
You could just give us sometimes to go a lenght with SBU on Java.

Let me quickly get back to my assignment, I've to submit tonight else SBUcareer may be discouraged.

@qleyo ill advice u(or some1 should) open a new thread for C/C++ , i dont think any knowledge is a waste.

My assignment :

the diagram below

import java.lang.Object

public class Temperature extends Object {

private int celsius = 0;
private int farhenheit = 0;
protected boolean tempOkay = false;

//i want to build the constructor now

public Temperature (int newcelsius, int newfarhenheit){


celsius = newcelsius;
farhenheit= newfarhenheit;
tempOkay= true;

}//end constructor


//build celsius method
public int getCelsius( ){
return celsius;
}//End getCelsius

public void setCelsius (int extCelsius){
celsius = extCelsius;
}//End setCelsius


public int getFarhenheit( ){
return farhenheit;
}//End getCelsius

public void setFarhenheit (int extFarhenheit){
farhenheit = extFarhenheit;
}//End setFarhenheit


public boolean isTemperatureOk(){
return tempOkay;
}//End isTemperatureOk


}//end class

Demonstration class below:


import java.lang.Object;

public class TemperatureDemonstration extends Object {


//lets instantial our class , but at first set it to null
static private Temperature firstObject = null;
    static private Temperature secondObject = null;


public static void main (String args[]){

    //We are going to instantiate two objects we created above
      firstObject = new Temperature (32, 8 ) ;
      secondObject = new Temperature (55, 6);

       //Testing the new Objects or querying their attributes

   System.out.println ("Preset first object value: "+firstObject.getCelsius());
   System.out.println("Preset second object value: "+secondObject.getFarhenheit());


//Changing the identity of the objects we create above, hence assigning new values to their attribute.
  firstObject.setCelsius(3);
  secondObject.setCelsius(10);

  //Testing the new Objects or querying their attributes
   System.out.println ("New value for the first object: "+firstObject.getCelsius());
   System.out.println("New value for the second object: "+ secondObject.getCelsius());

//Lets check if temperature is ok
String tempVal=new String();
if(firstObject.isTemperatureOk()){
tempVal="Temperature is ok";
}

System.out.println(tempVal);
}// end print to system

}//end TemperatureDemonstration

The classes have been compile and ran.

its will print if temperature is ok using the boolean method isTemperatureOk() built .

[size=24pt]Class Diagram[/size]


Dont worry if your diagram do not look like this, with more practice you will become good in drawing class diagrams. Remember when you are in the work industry as a developer/programmer all you get is a Class Diagram or a UML Diagram and you must produce a software/codes base on the UML or class diagram. At the end of this tutorial I will help you to get started with UML

SBU, Please, find attached my assignment. I should have submitted earlier on Tuesday morning but for the fact that the system was down. I guess I miss out on the Class demonstration stuff. I will be awaiting ur comments.