Title: System properties: Question about this concept - Sun Certified Java Programmer 310-065 - Lesson 46
Duration: 18 minutes
Summary: In this video we will wrap up our discussion on Java Development. We will tackle questions that discuss packages, jar files and classpath(s). First, we will start with system properties. System properties can be specified at the command line and programmatically. However, a property specified programmatically will take precedence over the value specified at the command line. We will see a question that covers this concept. Next, we will talk more about creating jar files and how we can reference them with the classpath. We will be given a directory structure that contains java files and jar files. We need to choose the correct command line option that references the jar file.
Methodology of the development of example: Good coding standard and simplified design to prepare for the Java programmer certification exam CX-310-065.
Technology Used: Java - Core Concepts
Keywords: class, object, classpath, package, jar files, import, static, System properties.
It is worth noting for question 8 that when building a String with null references, those references are printed as the string "null".
In the video it is suggested that you can not use the -classpath option with the java command. This is incorrect. The -classpath option is clearly listed in the available options for the java command at http://docs.oracle.com/javase/1.4.2/docs/tooldocs/windows/java.html#options.
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