comp 2

Question 1

capability to reuse code.

Answer 1

Object Oriented

Question 2

One of the nice things about Java is its capability to run in most platforms once you’ve compiled it

Answer 2

Cross Platform / Platform Independent

Question 3

WORA

Answer 3

Write Once, Run Anywhere

Question 4

– it runs the applications on top of the Java Virtual Machine (JVM) and
your JVM sits on top of your operating system
– Your Java application does not have a direct attachment or a direct
contact with your operating system

Answer 4

secure

Question 5

100% free

Answer 5

You can freely download the JDK and its documentation at the Oracle website.

Question 6

give the 7 DIFFERENCES OF JAVA & C++

Answer 6

• Java does not support operator overloading.
• Java does not have template classes.
• Java does not support multiple Inheritance.
• Java does not support global variables.
• Java does not use pointers.
• Java has replaced the destructor function with finalize method.
• There are no header files in Java.

Question 7

enumerate the three java flavors

Answer 7

• 1. Java Standard Edition (JSE)
• 2. Java Enterprise Edition (JEE)
• 3. Java Micro Edition (JME)

Question 8

differentiate the three java flavors

Answer 8

1. Java Standard Edition (JSE)
   - It is widely used platform for computer
   programming in Java
   * 2. Java Enterprise Edition (JEE)
   -It has extra libraries which can be used to
   develop JEE applications
   * 3. Java Micro Edition (JME)
   -It is used to design for embedded systems.
   Example: Android

Question 9

an application that Java developers
should have in their machine.

Components:
Java Compiler, Java-Doc creator, utility software, profilers and Java Runtime
Environment (JRE).

Answer 9

Java Development Kit (JDK)

Question 10

is the interpreter that needs to be
installed by a Java Technology Application user.

Answer 10

Java Runtime Environment (JRE)

Question 11

components of JRE

Answer 11

Java Virtual Machine (JVM)
Application Programming Interface (API)

Question 12

is a virtual machine whose purpose is to
execute other programs.

Answer 12

Java Virtual Machine (JVM)

Question 13

Application Programming Interface (API)

Answer 13

set of rules that controls the interaction between software.

Question 14

JAVA VIRTUAL MACHINE

Answer 14

• Java Virtual Machine can read compiled byte codes
• The JVM can also be customized
• Majority of the objects type is being checked by the compiler

Question 15

process of deallocating memory (heap) spaces that is no longer needed

Answer 15

GARBAGE COLLECTOR

Question 16

In other programming language, this is the job of the programmer

Answer 16

GARBAGE COLLECTOR

Question 17

T or F
The implementation of the Garbage Collector varies on different platform.

Answer 17

T

Question 18

which enables the user to make use of Buttons, Frames and TextFields

Answer 18

Graphical User Interface (GUI) Applications

Question 19

makes use of the standard GUI components

Answer 19

Abstract Window Toolkit (AWT)

Question 20

other name for Java Foundation Classes (JFC)

Answer 20

Swing

Question 21

which is supported under the javax (java extension) package.

Answer 21

Java Foundation Classes (JFC) / Swing,