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 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.






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






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






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






5. 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.






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. 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()






8. Keeps two threads from interfering with one another.






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






10. 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






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






12. 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.






13. Introduces a class






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






15. A Web scripting language that is used in both browsers and Web servers. Like all scripting languages it is used primarily to tie other components together or to accept user input.






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






17. Introduces statements that are watched (during runtime) for things that can go wrong.






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






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






20. A self-reference






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






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






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






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






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






26. Puts the code into a package






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






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






29. CRUD: Create - Retrieve - ________ - Delete






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






31. 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).






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






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






34. Introduces a path of execution to take when no case is a match in a switch statement.






35. The output of one servlet act as a input to another servlet.






36. 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






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






38. Jumps out of a loop or switch.






39. Creates an object from an existing class.






40. Indicates that a method or constructor may pass the buck when an exception is thrown.






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






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






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






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






45. Indicates that a value is a 16-bit whole number.






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






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






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






49. ______ 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






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