Java™ Application Development on Linux - Dator

5.4 The Java Runtime Engine1215.4THE JAVA RUNTIME ENGINEYou can download and install just the software required to run Java applicationswithout the development tools. This is known as the Java 2 Runtime Edition.5.4.1 The BasicsYou run a Java program by invoking the java command. Usually, the argumentto the command is a class name. That class is loaded, and its main() methodis run.Remember, this is not a filename, but a class name! The rest of the command-linearguments that follow the class name are passed as an array ofStrings to the main() method of the named class. Example 5.4 demonstratesrunning the FetchURL program.Example 5.4 Running a Java program with java$ java FetchURL http://www.yahoo.com/newshttp://www.yahoo.com/news:Yahoo! Directory News and Mediali { font-size: 12px; margin-bottom: 2px; }...... etc.CAUTIONRemember that if you override the classpath, either with the -classpath or-cp command-line options (detailed below) or with the CLASSPATH environmentvariable, you must include the “.” directory somewhere in the classpathif you want Java to include current working directory in the search list. Since “.”is the default classpath, many people are surprised when they set a classpathand suddenly can no longer run a .class file in their current directory.