In this blog entry, basics in Strings in Java programming will be briefly discussed.

Assumption: You have already set up your Java development kit on your computer. (Environmental Variables, paths, etc…)

Hello World in Java

Let’s start off with a hello world. Save the following code as HelloWorld.java
class HelloWorld {
public static void main(String[] args)
{
System.out.println("Hello World!");
}
}


For Windows or Unix, go to Command Prompt, change to the Java directory, and type javac C:\PathToFile\HelloWorld.java to compile the program. Then, type java HelloWorld to run it. You should be able to see “Hello World” on your screen.

String in Java

This is a new file to compile and run. (For example, JavaStringTest.java)

class JavaStringTest{
public static void main(String[] args)
{
String MyName;
MyName = "Catzie";
System.out.println(MyName);
}
}


String Array in Java

This is how you create and loop through a String Array in Java.

class StringCharacter
{
static String[] FruitShake={"milk","sugar","strawberry","Banana","Apple"};
public static void main(String args[]){
for(int i=0;i<5;i++){
System.out.println(roseindia[i]);
}
}
}


Java Array Length

Now that you know how to create and print String array contents, let's try to get the length of a Java array.


class StringCharacter
{
static String[] FruitShake={"milk","sugar","strawberry","Banana","Apple"};
public static void main(String args[]){
int arrayLength = FruitShake.length;
System.out.format("Number of FruitShake ingredients is %d", arrayLength);
}
}


*NOTE: Codes are not YET tested.

I uploaded this Java Programming PDF to share with IT Elective 1 (Object Oriented Programming with Java) classmates.

I searched for it in Google, and I’m lucky to find this free e-book of Head First Java – Second Edition. I can’t remember where I got it from though. It’s been days (EDIT: no, it’s been months now! or maybe years), and I got a poor memory. lol.

And by the way, I used A-PDF Split to split the e-book into separate chapters of the PDF for our convenience. The file I downloaded is only one PDF file which had 690 pages. It lags in slow computers. It’s also better off being separated by chapters for ease of reading, right? So, there.

I hope the Java PDF download links on this blog entry (Head First Java – Download) help you guys, and if you do find them helpful, please LIKE my website on Facebook, the Like button is right below on the FB box, thank you!

Download Link for Head First Java Ebook

New! The following Head First Java Ebook is of better quality than the scanned one. It’s not split into several PDFs of individual chapters though, because I have no time to do it yet. It’s one big PDF file for now.

FILE SIZE: 37.53MB

Download Links for Head First Java Ebook

The zip file that follows contains Head First Java scanned ebook split into several PDFs of individual chapters.

FILE SIZE: 31.6MB

• Head First Java (2nd Edition, Scanned) by Kathy Sierra and Bert Bates (Non-hotlinked from MediaFire) (34369)
• Head First Java (2nd Edition, Scanned) by Kathy Sierra and Bert Bates (on FileDen) (27670)

Java Book Chapters

1. Breaking the Surface: a quick dip
2. A Trip to Objectville: yes, there will be objects
3. Know Your Variables: primitives and references
4. How Objects Behave: object state affects method behavior
5. Extra-Strength Methods: flow control, operations, and more
6. Using the Java Library: so you don’t have to write it all yourself
7. Better Living in Objectville: planning for the future
8. Serious Polymorphism: exploiting abstract classes and interfaces
9. Life and Death of an Object: constructors and memory management
10. Numbers Matter: math, formatting, wrappers, and statics
11. Risky Behavior: exception handling
12. A Very Graphic Story: intro to GUI, event handling, and inner classes
13. Work on Your Swing: layout managers and components
14. Saving Objects: serialization and I/O
15. Make a Connection: networking sockets and multithreading
16. Data Structures: collections and generics
17. Release Your Code: packaging and deployment
18. Distributed Computing: RMI with a dash of servlets, EJB, and Jini

Happy Java programming, y’all. Make good use of the learning Java book you downloaded.

Java is a programming language originally developed by James Gosling at Sun Microsystems (which is now a subsidiary of Oracle Corporation) and released in 1995 as a core component of Sun Microsystems’ Java platform.

The syntax of Java is mostly derived from that of C and C++ programming languages, but with simpler object model and fewer low-level facilities.