Test your basic knowledge |

Java Programming Basics

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. An opensource Java Application Server






2. Servlet is: loaded by servlet container when 1st requested; is then forwarded the user's request; processes the user's request; returns the response back to the servlet container. Servlet container sends this response back to the user. Servlet stays






3. Keeps two threads from interfering with one another.






4. You can't use this word in a Java program. The word has no meaning. Because it's a keyword - you can't create a const variable.






5. In the Java programming language specification - describes a floating point number that holds 64 bits of data. See also single precision.






6. An industry standard for database-independent connectivity between the Java platform and a wide range of databases. The JDBC provides a call-level API for SQL-based database access.






7. Indicates that a value is a 32-bit number with one or more digits after the decimal point.






8. Tests to see whether a certain object comes from a certain class.






9. A description of the structure and properties of a class of XML files.






10. CRUD: Create - Retrieve - ________ - Delete






11. A distributed object model for Java program to Java program in which the methods of remote objects written in the Java programming language can be invoked from other Java virtual machines1 - possibly on different hosts.






12. Used to terminate the execution of the current JSP page and switch control to another resource






13. A technology that provides distributed persistence and data exchange mechanisms for code in Java.






14. Indicates that a variable or method can be used in subclasses from another package.






15. This separates the content presentation (View) from the underlying business operations/content generation (Model) using infrastructure/controller Servlet (Controller) which exists between the client browser and the JSP/Servlet-generated pages. Contro






16. Imposes strict rules on the use of a variable by more than one thread at a time.






17. Jumps out of a loop or switch.






18. Includes a new tag library into page - allows use of tags in page






19. Indicates that a variable or class or method can be used by any other Java code.






20. Creates an object from an existing class.






21. A subset of the Java Development Kit (JDK) for end-users and developers who want to redistribute the runtime environment alone. The Java runtime environment consists of the Java virtual machine1 - the Java core classes and supporting files.






22. Common Object Request Broker Architecture. A language independent distributed object model specified by the Object Management Group (OMG).






23. A Java class that can be loaded into and run dynamically in a Servlet container on a web server; interact with web clients via a request-response model based on HTTP.






24. A standard programming interface for writing Java native methods and embedding the JVM into native applications. The primary goal is binary compatibility of native method libraries across all JVM implementations on a given platform.






25. ______ uses HTML-like tags in a "*.jsp" web-page on a web server linked to from the client's web-browser as short-hand to render Java Servlet code in a Java .class file by the Servlet/JSP container (done by the "page-compiler" Servlet) running on the






26. A protocol used for communication between CORBA object request brokers.






27. A library than enables CORBA objects to locate and communicate with one another.






28. Puts the code into a package






29. Run-once code blocks which run once at beginning of page load for initialization tasks - can appear anywhere in .jsp page itself - useful for overload JspInit() and JspDestroy()






30. Causes the computer to repeat some statements over and over again (for instance as long as the computer keeps getting unacceptable results).






31. A lock that can be counted - i.e. how many times a resouce has been accessed and locked






32. Includes a file in the page






33. A principal native to the operating system on which the Java platform is executing.






34. A software development environment for writing applets and applications in the Java programming language. Technically - the JDK is the correct name for all versions of the Java platform from 1.0 to 1.1.x.






35. Creates a new exception object and indicates that an exceptional situation (usually something unwanted) has occurred.






36. Forces the abrupt end of the current loop iteration and begins another iteration.






37. Refers to the superclass of the code in which the word super appears.






38. Reuses the functionality from a previously defined interface.






39. Indicates that if and when an object is serialized a variable's value doesn't need to be stored.






40. Ends execution of a method and possibly returns a value to the calling code.






41. Allows us to invoke more than one servlet in sequence when the URL is opened with a common servlet alias.






42. A tool for tracking and managing source file changes - written in Java.






43. A set of APIs that assists with the interfacing to multiple naming and directory services.






44. Introduces statements that are executed when the condition in an if statement isn't true.






45. Indicates that a value is a 64-bit number with one or more digits after the decimal point.






46. _______ separates Java code/functionality from page design and use of tags in JSP and allows for re-use of beans






47. Repeats some statements over and over again (as long as a condition is still true).






48. A set of APIs that support the integration of audio and video clips & 2D fonts & graphics and images as well as 3D models and telephony.






49. Indicates that a variable or method belongs to a class rather than to any object created from the class.






50. You can't use this word in a Java program. The word has no meaning. Because it's a keyword you can't create a goto variable.