JDK is available from the website in the related link, below.
It means you have not installed jdk and jre in your machine...
JDK stands for Java Development Kit. This contains the Java compiler, Interpreter and other tools that Java provides. It also contains all Java default packages and classes that can be used for development of Java Applications. JDK versions are continuosly released and upgraded every year by Sun Microsystems.
it is a ducks beak that is used to vomit out fish
It's very easy!! Go to "bluej.org" & click on "quick download" on upper-right of the screen. On the right side you would find two links-"JDK 6" & "JDK 5". If your using windows vista or later click on JDK 6 or else click on JDK 5. Click on "download JDK" & select platform & download it.
The Java compiler translates Java source code to Java byte code.
First of all, JDK is Java Development Kit and JRE is java runtime Environment. JDK provides compiler and all the necessary tools to write the code verses JRE provides with the environment in which the java code will run.
Sure you can. Java is free. All you need to do is, visit Sun's website and download the latest version if Java JDK and install it.
1. install JdK 2. include JDK_HOME/bin in your PATH environment variable
JDK 7
Get the JDK & Bluej from net and the rest will be done by them. Java byte codes are stored as *.class ; where "*" represents the class name, in your hard disk. You can download BlueJ as well as JDK from the related link.
For a start, you can install a C-compiler.