Strings
As you may have noticed, in Java, there is no variable type called string.
However, although Java does not have a built-in String type, it does provide you will a predefined class called String that you can use instead.
We'll talk more about classes and using them in later sections.
However, it would be nice to at least introduce the String class here so we can use it in the meantime.
To instantiate a String, you simply use the same syntax that you would if it were a type:
String s = "Hello Cyberspace";
Strings have quite a few methods that allow you to manipulate them in every way that you could in Perl.
To read about these methods, simply use the online documentation.
We will talk about how to efficiently use the online documentation a little bit later but you should know that you can find the String class in the java.lang package.
NEXT
Selena Sol contributes to the JavaBoutique's Introduction to Java. Selena curently works for Barclays Capital in London, one of the leading global investment banks in Europe and has worked as a software developer for the National Center for Human Genome research, Microline Software, Neuron Data, and Electric Eye in Singapore. Selena is perhaps best-known for creating the Public Domain Web Script Archive (Extropia) and writing several books on Web Programming (Perl, CGI, Java).
Email: selena@extropia.com
New on the Java Boutique:
New Review:
Time Management Made Easy with the Quartz Enterprise Job Scheduler
Why not just use the Java timer API? This open source scheduling
API boasts simplicity, ease-of-integration, a well-rounded feature
set, and it's free!
New Applet:
Reverse Complement
Reverse Complement is a simple applet that converts DNA or RNA
sequences into three useful formats.
Elsewhere on internet.com:
WebDeveloper Java
Lots of Java information on webdeveloper.com
WDVL Java
Thorough Java resource at the Web Developer's Virtual Library.
ScriptSearch Java
Hundreds of free Java code files to download.
jGuru: Your View of the Java Universe
Customizable portal with online training, FAQs, regular news updates, and tutorials.
|