U2: Introduction to Java Fundamentals

Question 1

Algorithm

Answer 1

Sequential technique that accepts input and produces output needed to solve problem

Question 2

Computer Programming

Answer 2

Writing code computers can translate and understand (ex: programs, applications)

Question 3

Computer Science

Answer 3

Ideas, concepts and mathematics behind computer programming

Question 4

Programmers

Answer 4

• Write code for software.
• Employed in software development and IT.

Question 5

Programming Skills [A]

Answer 5

• Computer use
• Reading and writing text
• Finding information

Question 6

Programming Skills [B]

Answer 6

• Oral communication
• Scheduling/budgeting/accounting
• Data analysis
• Job task planning

Question 7

Programming Skills [C]

Answer 7

• Decision making & problem solving
• Measurement and calculation
• Critical thinking

Question 8

Intergrated Development Environment (IDE):

Answer 8

• Organizes program and files; ensures code is correct
• Software allows writing of programs

Question 9

Development Kit

Answer 9

Software turning code into viable computer program

Question 10

Cloud IDE

Answer 10

• Hosted and accessed through Internet; runs on remote servers
• Accessible by any device

Question 11

Locally Installed IDE

Answer 11

Installed on developer’s computer

Question 12

Cloud IDE Accessibility

Answer 12

• Enables real-time collaboration from different locations
• Enhances team productivity; streamlines development

Question 13

Cloud IDE Scalability

Answer 13

• Provides scalability of computing resources
• Developers can scale projects up or down without limits on hardware

Question 14

Cloud IDE Integration

Answer 14

• Built-in integrations with other development tools
• Easy to add version control, deployment pipelines, continuous integration, other features

Question 15

Locally Installed IDE Performance

Answer 15

Provide faster performance; especially for intensive computing resources

Question 16

Cloud IDE Maintenance

Answer 16

• Handle maintenance on server side
• Reduces burden on developers to manage software installations

Question 17

Locally Installed IDE Customization [A]

Answer 17

• More flexibility; allows many things
• Design of GUIs

Question 18

Locally Installed IDE Offline Access

Answer 18

Don’t require internet connection

Question 19

Locally Installed IDE Customization [B]

Answer 19

• Configuring of settings; install of plugins
• Tailoring environment to workflow

Question 20

Locally Installed IDE Security

Answer 20

• Provide greater control over data security
• Good for sensitive information

Question 21

Locally Installed IDE Resource Control

Answer 21

• More control over resources allocated
• Beneficial for resource-intensive work

Question 22

WORA (Write Once, Run Anywhere)

Answer 22

• Java doesn’t require compiling program for different computer systems
• Occurs by compiler-interpreter model

Question 23

Examples of Machine Language Instructions

Answer 23

• Moving data from Ram to register
• Sending data to peripheral device
• Machine code from Windows won’t run on Apple system

Question 23

Compile

Answer 23

• Turning programming language code into machine language code
• Program is translated, put together, built into machine language

Question 24

Machine Language Code

Answer 24

- 0s and 1s - Language of CPU and components of computer - Slightly different for each computer

Question 25

Program Code Translation

Answer 25

- Program code must be translated into machine language - Done with either compiler or interpreter

Question 26

Scanning

Answer 26

- Compiler scans entire program and translates into machine code - Interpreter translates program 1 line at time

Question 27

Analysis & Execution

Answer 27

- Compiler takes longer to analyze source code; execution is faster - Interpreter takes less time; execution time is slower

Question 28

Intermediate Code Generation

Answer 28

- Compiler generates intermediate object code; requires further linking - Interpreter generates no intermediate object code; more memory efficient

Question 29

Errors in Code Translation

Answer 29

- Compiler generates error after scanning whole program - Interpreter translates until first error met; makes fixing easy

Question 30

Languages Using Compiler and Interpreter

Answer 30

- Compiler: C, C++, Java - Interpreter: Python, Ruby

Question 31

Java Bytecode

Answer 31

- Middle language between programming and machine code - Machine independent - can run on any machine

Question 32

Java Virtual Machine (JVM)

Answer 32

- Interpreter for Java bytecode → converts to machine code - Different for every OS

Question 33

Clicking “Run Project” on Java

Answer 33

- First translated into Java bytecode using compiler - Then translated into machine-dependent code by JVM