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. A software "execution engine" that safely and compatibly executes the byte codes in Java class files on a microprocessor (whether in a computer or in another electronic device).






2. 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()






3. Creates a subclass






4. Limits the computer's ability to represent extra large or extra small numbers when the computer does intermediate calculations on float and double values.






5. Indicates that a variable's value cannot be changed - that a class's functionality cannot be extended or that a method cannot be overridden.






6. Indicates that a method doesn't return a value.






7. Enables the programmer to use code that was written in another language (one of those awful languages other than Java).






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






9. Introduces the last will and testament of the statements in a try clause.






10. A tree of objects with interfaces for traversing the tree and writing an XML version of it as defined by the W3C specification.






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






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






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






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






15. 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.






16. Introduces an interface which is like a class but less specific.






17. Indicates that a value is a character (a single letter or digit or punctuation symbol and so on) stored in 16 bits of memory.






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






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






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






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






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






23. Basic code block of a JSP page






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






25. A software development environment for writing applets and application in Java .






26. Gets the computer to repeat some statements over and over again (for instance a certain number of times).






27. 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






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






29. Evaluates interior code to a String and feeds it to the implicit "out" print writer (JspWriter) - done at time of JSP page request






30. Introduces statements that are executed when something interrupts the flow of execution in a try clause.






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






32. ______ 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






33. A special Java servlet-aware web server process.






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






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






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






37. Tells the computer to follow one of many possible paths of execution (one of many possible cases) depending on the value of an expression.






38. Tests to see whether a condition is true. If it's true the computer executes certain statements; otherwise the computer executes other statements.






39. Indicates that a variable or method can be used only within a certain class.






40. Enables the programmer to abbreviate the names of classes defined in a package.






41. Indicates that a value is either true or false in the Java sense.






42. A portable platform-independent reusable component model. A component that conforms to this model is called a bean.






43. A class that wraps primitives - Integer or Boolean...






44. A CORBA standard for building server-side applications that are portable across heterogeneous ORBs.






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






46. A platform-independent file format that aggregates many files into one. Multiple applets written in the Java programming language and their requisite components (.class files & images & sounds and other resource files) can be bundled in a JAR file an






47. Two Servlet API packages: javax.servlet.* ___________






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






49. 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.






50. Similar to the include Directive but can pass information to the included resource