Cit For Module Two, Test One.

Front 1

What is a .class file?

Back 1

It's the bytecode result of running the Java compiler (javac) n a .java file.

Front 2

What does a .dll file stand for?

Back 2

A Dynamic Link Library.

Front 3

What is a .dll file?

Back 3

Is a file that can be linked to an app at run time (when the app is being executed) rather than statically at compile time.

Front 4

What does a .jar file stand for?

Back 4

Java Archive format file.

Front 5

What is inside a .java file?

Back 5

Contains the source file (the Java language commands).

Front 6

What does API stand for?

Back 6

Application Programming Interface.

Front 7

What does API mean?

Back 7

The way the programmer writing an application can use the classes and methods available to him/her.

This term is loosely used to refer to a class or library of classes.

Front 8

What is an application?

Back 8

A stand alone program, that is sometimes written in Java. Contrast with an Applet.

Front 9

What is an Applet?

Back 9

Is a program written in Java that can be included in an HTML page.

Front 10

What is Arithmetic promotion?

Back 10

Is the automatic conversion of data from one type to another (casting) while arithmetic is being performed.

Front 11

What is an Array?

Back 11

A fixed length collection of data of the same data type (int, String etc). The position of each item is uniquely designated by an integer.

Front 12

What is an Attribute?

Back 12

Is a variable within a class. Also known as a member variable.

Front 13

What is a Breakpoint?

Back 13

Is a location inside the program where execution can be stopped during debugging.

Variable states can be examined to assist in finding and fixing errors.

Front 14

What is bytecode?

Back 14

Is platform independent code generated by the javac tool (compiling). This code is then interpreted at run time.

Front 15

What is casting?

Back 15

Is converting one data type to another.

Front 16

What is a classpath?

Back 16

Is a system variable that must be set to tell the JVM (java virtual machine) where to locate the Java class libraries (including user-defined libraries) interfaces, JAR archives and Zip at run time.

Front 17

What is a collection?

Back 17

A group of related objects. Similar to an array, eg of collections include Vector, List and Set.

Front 18

What is a Compiler?

Back 18

Is a tool for turning raw code int an executable or compiled format. Like javac.

Front 19

What is excheck?

Back 19

Is a utility that checks for version conflict between a specific JAR file and any extensions already in the JDK.

Front 20

What does JAR stand for?

Back 20

Java ARchive.

Front 21

What is a JAR?

Back 21

Is a cross-platform file based largely on the ZIP file format. It is used to group multiple files together.

Used often in Applets so that multiple classes, audio and image files can be downloaded with one server "hit". Can drastically improve download speeds.

Front 22

What is Java?

Back 22

Is a pure Object Orientated software development language designed by Sun Microsystems.

It was designed to be "write once, run everywhere."

Front 23

What is java utility?

Back 23

Is used to launch java applications (classes).

The process includes the starting of the JRE, the loading of the specific class, after which the main method of that class is invoked.

Different command line options exist, and none, one or more command line arguments may be passed into the application.

Front 24

What is javac utility?

Back 24

Is the java compiler. This tool reads classes and interface definitions written in the Java programming language and compiles them into bytecode class files (.class).

Different command line options are available to change compiler behavior.

Front 25

What is javadoc utility?

Back 25

Is a tool that parses class files and or packages and extracts from it the information about public, protected and inner classes, interfaces, constructors, methods, and fields.

Certain types of user documentation are also extracted.

This info is then constructed into a series of HTML documents.

This HTML document is similar to those that Sun provided to describe their class libraries (API documents).

Front 26

What is jdb utility stand for?

Back 26

The Java DeBugger utility.

Front 27

What does the jdb utility do?

Back 27

Is a tool used to locate and fix errors in Java code, using the Java debugger API.

Front 28

What does JDBC stand for?

Back 28

The Java DataBase Connectivity.

Front 29

What is the JDBC?

Back 29

Is a set of APIs that provide database-independent SQL-based connectivity between Java programs and a wide range of databases.

Front 30

What does JDK stand for?

Back 30

Java Development Kit.

Front 31

What is the JDK?

Back 31

Is a software development environment provided by Sun Microsystems to write and test Java programs (including applets.).

The JDK consists of the development tools, supporting files and the JRE.

Front 32

What does JIT stand for?

Back 32

Just In Time compiler.

Front 33

What is the JIT?

Back 33

Is when a class is loaded, it translates the bytecodes into the native machine code.

Using it may cause slight delays after each class is loaded, but can improve overall program performance (as much as tenfold).

If it is disabled, bytecodes are executed directly by an interpreter (the JVM).

Front 34

What does JNI stand for?

Back 34

Is the Java Native Interface.

Front 35

What is JNI?

Back 35

Is a programming interface for embedding the JVM into native applications and writing Java native methods.

Front 36

What does JRE stand for?

Back 36

Java Runtime Environment.

Front 37

What does the JRE do?

Back 37

Is the subset of the JDK that is required to run Java applications, and the only part that needs to be installed on an end user's machine.

This consists of the JVM, the Java core classes, and all necessary supporting files.

Front 38

What does JVM stand for?

Back 38

Java Virtual Machine.

Front 39

What does the JVM do?

Back 39

Is the part of the JRE that is responsible for interpreting and executing bytecodes.

Front 40

What is a Package (Java)?

Back 40

Is a group of classes and or interfaces.

It is a logical way to group related classes/interfaces together, thereby providing multiple "name-spaces".

Front 41

What does SDK stand for?

Back 41

The Java Software Development Kit.

Front 42

What is the SDK?

Back 42

Is a different way of referring to the JDK.