Chapter III XI IP

GETTING STARTED WITH PRGRAMMING USING IDE

1.       How many levels of Computer languages are there?

-          There are four types of programming language in computers

-          First Generation

-          Second Generation

-          Third Generation

-          Fourth Generation

2.       What is Java?

-          Java is a High Level Programming Language.

-          Java is an Interpreter & Compiler based programming language.

3.       What are the features of Java program

-          Java is a Platform independent software

-          Java is a Byte code based software.

4.       How do java work

-          Java uses Byte code to execute the program in Java Virtual Machine

5.       What is JVM

-JVM is the software that works as virtual machine to run the java Byte codes

-JVM is the software that helps java to become Platform independent.

6.       What is the good characteristics of Java

-Write Once Run Anywhere (WORA)

-Light Weight Code

- Security

-Built-in Graphics

- Object-Oriented Language

- Supports Multimedia

- Platform Independent

-Open Product

7.       What is java byte code

-          The java byte code is a machine instruction for a Java processor chip called java virtual machine. The byte code is independent of the computer system it has to run upon.

-          The java byte code is a machine instruction for a Java processor chip called java virtual machine. The byte code is independent of the computer system it has to run upon.

-         

8.       What is embedded java

-          The JVM in hardcode or hardware chip is called embedded java.

9.       What are java APIs?

-          The java APIs (Application Program Interface ) are libraries of compiled code that can be used in your programs.

10.    What is Rapid Application Development

-RAD is the process of creating very fast applications using RAD tools. Like netbeans

- drag and drop method is used to create RAD applications.

11.    What is NetBeans?

-          NetBeans is an IDE (Integrated Development Environment) tool which is free, open source, cross-platform.

-          It supports JVM and Java

12.    Explain some features of NetBeans

-          It supports GUI programming

-          Drag-and-Drop GUI objects

-          Excellent editing (advance source code editor)

-          Web-services

-          Excellent debugging

-          Good many wizards, code generation and management tools and many more.

13.    Define the different parts / areas of NetBeans

-          Title Bar

-          Menu Bar & Pull Down Menu

-          GUI Builder / Design Window

-          The Coder Window / Code Editor Windows

-          The Palettes

-          The Inspector Window.

-          The Property Window.

14.     Explain the two types of programming technic (based on command console)

-          Command Line Interface (CLI ) C++

-          Graphical User Interface ( GUI) Java NetBeans

15.     How GUI works

-          Most GUI Programming works on Events occurrence.

16.     What is an Event

-          Event is an action given by the user to the program. E.g. Mouse Click , Mouse Over

17.    What is the concept of GUI Programming in Java NetBeans

-          In Java GUI programming the  the event are fired by the user and the messages are passed to the program. The program then handles the message and execute the program. E.g. 1+2 is passed to calculator program as message, the event of click button to find in sum is fired by the user, the output is returned to the user from the program as message.

18.    What is java GUI toolkit

-          Java GUI API library like swing class, AWT classes are called as GUI Toolkit. Toolkit are the component allowed to design a GUI interface for the program.

19.    What is a component

-          A component is the object that defines a screen element such as a push button or test field.

20.    What is a widget

-          A control in java swing is called a

21.    How many types of widget or controls are there in Java Swing

-          There are two types of container controls.

-          Child control

o   Low level control

-          Parent control

o   Top Level control

o   Middle Level control

22.    What is a control / component in java swing

-          It is the java swing object for GUI based programming

-          J Frame

-          J TextFields

-          J Password

23.    What is the naming convention in Java

-          The rules given to identify the program or program variables are called naming convention

E.g int /class / String is never used as identifier

24.    What are the rules of naming convention

-          It should not start with number of any special character expect _ $

o   Amit is ok

o   1amit is worng

o   _amit is ok

o   @amit is wrong

-           It should not contain any special character or symbol expect _ $

o   amit1 is OK

o   Rahul Jaiswal is worng

o   Rahuljaiswal is ok

o   Rahul_jaiswal is ok

25.    What are component , event and event listeners

-          The event is an object that gets generated when user does something as mouse click

-          The event listener is attach to a component and contains the methods / functions that will be executed in response to an event.

-          ActionPerformed - Event

-          ActionEvent – Event Listener

26.    What is a difference between Run File and Clear & Build.

-          Run File put the program in Run time Mode

-          Clear & Build converts the source file to Byte code.