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






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






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






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






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






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






7. 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






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






9. Introduces a class






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






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






12. An extension that adds graphical user interface class libraries to the Abstract Windowing Toolkit (AWT).






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






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






15. Type of Java program (as opposed to a stand-alone program) which is embedded in a web page (requested from a server) and run on a client-side browser






16. A tool for checking compliance of applications and applets to a specification.






17. Indicates that the details of a class or a method or an interface are given elsewhere in the code.






18. 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.






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






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






21. A self-reference






22. 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.






23. Introduces one of several possible paths of execution in a switch statement.






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






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






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






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






28. Indicates that a value is a 32-bit whole number.






29. Indicates that a value is an 8-bit whole number.






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






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






32. Useful only for small sites






33. Tests the truth of a condition that the programmer believes is true.






34. 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.






35. CRUD: Create - Retrieve - ________ - Delete






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






37. 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.






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






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






40. 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






41. Jumps out of a loop or switch.






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






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






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






45. 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).






46. A definition of the interfaces that permit CORBA objects to participate in transactions.






47. Used to generate HTML






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






49. 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.






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







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