Chapter 2 Java

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Can a website contain multiple

...

What is an applet?

A java program that executes inside a webpage

Bytecode

A low-level code file that cannot execute as regular machine code file; bytecode is understood, and executed, by a Java interpreter, called Java Virtual Machine (JVM)

2-step translation

A message is first translation from its original language to English. Then, English to another language

What is an application?

A program that executes stand-alone

JCreator LE

An Integrated Development Environment (IDE), free software, a program that assists in writing Java programs

Created by a java compiler

Bytecode

Minors

Companies are not reluctant to prosecute minors

Which is larger, a compiler or an interpreter?

Compilers are much larger

Sun Microsystems

Created JCreator

Simple text editor

Creates Java source code

At home downloading steps

Download JDK, Install JDK, Download JCreator, Install JCreator

Computer Vulnerability

Even if your computer has the best security, leaving your computer unattended will leave you computer very vulnerable

What does HTML stand for?

HyperTextMarkupLanguage

Platform independent

If program source code created on one type of computer platform can execute on another computer platform without any difficulty

List 2 benefits with using Java on a web page?

It is secure and interactive

What is the name for the interpreter that takes the bytecode and then executes the program?

JVM

What does JVM stand for?

JavaVirtualMachine

What is the "Number 1 source of grief?"

Loss of Data

Virus

Malicious programs, programs that copy or duplicate themselves to other computers, programs that have been used in warfare to disable enemy computers

Does the computer understand bytecode?

No

Storage devices

No storage device is impervious to going bad and guarantees that data will never be lost

Copying copyrighted software

Stealing - as in felony theft

If JCreator is free how does it make any money

The LE (Light Edition) is free. Xinox hopes that you will purchase the Pro edition

Which of the following word from this program is NOT a keyword?

The file name

Bytecode

The intermediate code is used by the Java for translation

English

The intermediate language used by the United Nations for translation

Interpreter

The kind of translator used by Java to execute the program by translating the Java bytecode into machine code

Compiler

The kind of translator used by Java to translate source code into bytecode

Which line in this program generates output?

The one that looks like this: System.out.println("Hello World")

Which line in this program must contain the name of the file?

The one that looks like this: public class Java0201

Which lines in a program contain comments?

The ones with //

Platform independent

The source code created on one computer can run on any other computer

What does Java use an interpreter for?

To translate and execute bytecode

URL

Web Address

What happens to you when making an unethical choice when using a computer

Your life is ruined forever


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