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javac
subject			fact

javac	has documentation at Sun
	has documentation at Sun
	has example of use javac Demonstrate.java
	is a subtopic of How Java Works
	is an instance of compiler
	is an instance of Java development tool
	to run you type javac and the source file name with its extension on the command line
compiler	the compiler creates an output file for each class and interface defined in a source file when the source file is compiled
	the compiler will display an error message and the compiler will refuse to compile the program if you try to instantiate an abstract class
	the compiler will display an error message and the compiler will refuse to compile the program if you try to override a final method
	the compiler will display an error message and the compiler will refuse to compile the program if you try to assign to a final variable
	the compiler will display an error message and the compiler will refuse to compile the program if you try to compile a subclass of a final class
	chooses a constructor based on the number of the actual arguments and the types of the actual arguments
	compiles source code into bytecode
	has purpose to translate source code written in Java into bytecode for the Java virtual machine
	puts compiled code into a class file with the same name as the source file but with extension .class
Java development tool	has purpose to assist a programmer in preparing, debugging and executing Java programs
application	consists of one or more classes
	contains one class that contains a main method which serves as the starting point for the rest of the program
	has example of running java HelloWorld
	has part 1 main method called its entry point
	is similar to an applet
	is run by using a Java interpreter to load the application's main class file - this is normally done from the command-line prompt using the java tool from the SDK
Java program	can be compiled on any platform that has a Java compiler
	can be run on any implementation of the Java Virtual Machine specification
	is portable because it is compiled into bytecode that can run on any computer with a Java Virtual Machine
	is usually slower than native code
	is executed by a Java Virtual Machine
	must be readable by humans
	runs on a Java platform
	should follow consistent guidelines that make the program easy to read
	to run you may need platform-specific instructions

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