Computer Progran Excercise 02-1and 2
Can a website be written entirely in Java?
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What are the 2 parts of a computer virus?
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What does IDE stand for?
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What is the difference between the PRO version and the LE version of JCreator?
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What punctuation symbols must be at the end of all Java program statements?
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Which program is larger, a compiler or an interpreter?
A compiler is much larger than a interpreter
What is an application?
A program designed to operate in a stand-alone environment is called an application
What is an applet?
A program designed to operate inside a web page is called an applet.
When is a programming language considered to be platform independent?
A programming language is considered platform independent or portable if program source code created on one type of computer platform can execute on another computer platform without any difficulty.
All Java programs end with what suffix?
All Java programs end with .java
All bytecode files end with what suffix?
All bytecode file end with .class
Why is it bad to leave your computer both logged in and unattended?
Anyone can access any file in your computer
What does AVR stand for?
Automatic Voltage Regulation
What is bytecode?
Bytecode is a low level-level code file that cannot execute as a regular machine code file.
Does the computer understand bytecode?
Bytecode is not understood by any computer
What does CRLF stand for?
Carriage return/line feed
What does the command System.out.println do?
Display the characters placed between the double quotes that follow
If you were to compare the executing of a Java file with the UN, how would "bytecode" fit in with the UN analogy?
English
What does GUI stand for?
Graphic User Interface
What is a Java keyword?
Is a statement that starts your program
List 2 benefits with using Java on a web page?
It is secure and interactive.
What happens to the RAM if the computer loses power?
It stores any information that was saved
What does JRE stand for?
JRE stands for Java Routine Environment
What is the name for the interpreter that takes the bytecode and then executes the program?
JVM
What does JDK stand for?
Java Development Kit
What does JVM stand for?
Java Virtual Machine
What does Java use an interpreter for?
Java compiler translates the programmers source code into bytecode and then continues with an interpreter to translate and execute the bytecode file line by line
Java is an island in what country?
Java is an island in the country of Indonesia
Are comments compiled into bytecode?
No comments are not compiled into bytecode
When downloading the JDK from Sun Microsystems, what is the difference between downloading the Offline or the Online installation file?
Offline installs all necessary file and online installation allows additional downloading of any additional files.
What does println() do when there is nothing between the (parentheses)?
Println () created a blank line if it has nothing in between the parenthesis
What is spyware?
Program that snoops around your computer and tries to record information
List 7 keywords.
Public, class, static, void, main, String, and System.out.println
What does RAM stand for?
Random Access Memory
Both print and println follow what Java keyword(s)?
System.out.print/println
If you see public class Jessica in your program, what name must the file have?
The external file name of your program must be identical to the public class name inside your program, minus the java extension.
Explain the difference between print and println
The print keyword generates output without a carriage return and the println keyword does include a carriage return
Why is the JRE necessary?
They run Java programs that have already been created
The first 5 lines of program Java0201.java all begin with //. What does that mean?
They're notes/comments
What does it mean when we say that keywords in Java are "case-sensitive"?
This means that print is a Java keyword, which is not the same as Print.
Two or more keywords combine to make what?
Two or more keywords combine to make a program statement
What does URL stand for?
Uniform Resource Locator
What does USB stand for?
Universal Serial Bar
What are the 3 steps of a Java program?
Write the java source in some text editor. The source code file must end with .java. Translate the source code file with a Java compiler into an intermediate bytecode file that will end with .class. Execute the bytecode file with a Java Virtual Machine (JVM) programs , which is an interpreter
Can the Java compiler be accessed from the Command Prompt?
Yes the Java compiler can be accessed from the Command Prompt
Can a website contain multiple applets?
Yes, a web page can have multiple applets
Can Notepad be used to write a Java program?
Yes, notepad can be used to write a Java program
How much does it cost to download Java from Sun Microsystems?
You can download Java for free from sun Microsystems
Explain why the United Nations "2-step translation" process requires fewer translators than a "1-step translation" process.
You only need 1 translator for every language and English
What type of code is created by a Java compiler?
bytecodes
Java uses a_____to translate the program source code created by the programmer into _____
compiler bytecode
What does HTML stand for?
hyper text markup language
Refer to the previous question. Java then continues and uses an ______to translate the______into executable______file by file
interpreter bytecode file
Physical damage to a computer happens, but it is not the biggest problem. The number one source of grief for many people, especially students is_____
loss of data
Every application program has a_____segment.
main
What 3 things do you need to write a Java program?
text editor compiler interpreter