Chapter 1 - Prequel Flashcards by patrick macpherson

reads source code one statement at a time and executes it immediately

explain the role of an

interpreter

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these are the individual components that are needed in order to solve a problem domain

describe the
object
within object-oriented programming

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name 4 subsets of the java standard edition and there capabilities

Embedded version of java - This is aimed at the internet of things and offers web-based interfaces and a database facility (java DB)
Java card - A version of java that runs on smart cards such as sim cards. It offers encryption and running applications in small JVMs which are isolated from other applications
Micro edition (ME) - Used for programming on mobile phones but has been mostly superseded by android which also uses java
Java for televisons and set top boxes - This version can be used to create electronic program guides, games, menus, and access data over the internet

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what are the two editions of the
Java development kit (JDK)

Java Enterprise Edition, known as Java EE. The word ‘Enterprise’ refers to large, distributed programming environments. This is the Java used on the server side.
Java Standard Edition, known as Java SE. This is used on the client side.

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Platform independence – Java is a language that is run on a JVM on each device. Compiled Java code can be ported from one JVM to another.
Familiarity – the syntax of the language is based on C and C++, two other widely used languages.
Robustness – Java was designed to incorporate strong syntax checks, and to avoid the main causes of failure in C and C++.
Security – the JVM incorporates a secure runtime environment, which is important in anetworkedcontext.
Object-orientation – the object-oriented approach fits well with networks, where clients and servers interact by sending communications to each other.

what are 5 reasons that java became popular

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the drawback of this is that the compiled code will be specific to the platform it was compiled on

what is the drawback of compiling directly to machine code

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describe the difference between public and private Java runtime environments

java runtime environments (JRE) are public meaning that they will by default run any java code
java development kits include a private JRE meaning that it will only run java code when we ask it to do so

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describe the structure of an
object-oriented program

made up of objects that can hold there own data and know how to process that data
objects can share information between each other

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what is the advantage of using bytcode and a virtual machine

by using these the bytcode can be ran on any type of machine as long that machine has the correct virtual machine installed on it

the advantage is that no changes are required in either the source or bytecode when porting to different machines

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an intermediate language that is understood by a virtual machine which in turn can either interpret or compile the intermediate language to machine code

what is

bytecode

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ex1
domain - a system that manages patients in a hospital
Objects - patients doctors, nurses, wards

ex2
Domain - user interface
Objects - buttons, menus, windows

give two examples of domains and objects

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give two examples of domains and objects

ex1
domain - a system that manages patients in a hospital
Objects - patients doctors, nurses, wards

ex2
Domain - user interface
Objects - buttons, menus, windows

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give three sidenotes concerning java versions and editions

Java 1.0 was released in 1996 and is used on both client and server side
The java standard edition is updated every six months usually just bug fixes and new libraries nothing code breaking
Java 8 was the last update that had significant changes

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this is used for developing Java applications
it will include:
* private java runtime environment (JRE)
* an interpreter/loader (Java)
* a compiler (javac)
* an archiver (jar)
* a documentation generator (Javadoc)
* other tools needed in Java development

describe the
java development kit
and some of the components it will consist of

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this uses
dynamic / just-in-time (JIT) compilation

what type of compilation is used by the
java virtual machine

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this is the problem we are trying to solve or a system and will employ objects in order to create the solution

describe the
domain
within object-oriented programmig

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translates entire source code to either machine code or bytecode

Study These Flashcards

explain the role of a
compiler

this will contain the minimum requirements to run a Java
it will include:
* Java Virtual Machine (JVM)
* core classes
* supporting files

Study These Flashcards

describe the
Java runtime environment (java RTE)
and some of the components it will consist of

what type of compilation is used by the
java virtual machine

Study These Flashcards

this uses
dynamic / just-in-time (JIT) compilation

by using these the bytcode can be ran on any type of machine as long that machine has the correct virtual machine installed on it

the advantage is that no changes are required in either the source or bytecode when porting to different machines

Study These Flashcards

what is the advantage of using bytcode and a virtual machine

explain the role of an

interpreter

Study These Flashcards

reads source code one statement at a time and executes it immediately

describe the
object
within object-oriented programming

Study These Flashcards

these are the individual components that are needed in order to solve a problem domain

what are 5 reasons that java became popular

Study These Flashcards

Platform independence – Java is a language that is run on a JVM on each device. Compiled Java code can be ported from one JVM to another.
Familiarity – the syntax of the language is based on C and C++, two other widely used languages.
Robustness – Java was designed to incorporate strong syntax checks, and to avoid the main causes of failure in C and C++.
Security – the JVM incorporates a secure runtime environment, which is important in anetworkedcontext.
Object-orientation – the object-oriented approach fits well with networks, where clients and servers interact by sending communications to each other.

uses a structure that is comprised of a step by step call to procedures/functions (algorithmic style)
all data is stored in a global data structure and can be accessed by any part of the program

Study These Flashcards

give two points that describe the structure of a
procedural program

* **Embedded version of java** - This is aimed at the internet of things and offers web-based interfaces and a database facility (java DB) * **Java card** - A version of java that runs on smart cards such as sim cards. It offers encryption and running applications in small JVMs which are isolated from other applications * **Micro edition (ME)** - Used for programming on mobile phones but has been mostly superseded by android which also uses java * **Java for televisons and set top boxes** - This version can be used to create electronic program guides, games, menus, and access data over the internet

name 4 subsets of the java standard edition and there capabilities

describe the **Java runtime environment (java RTE)** and some of the components it will consist of

this will contain the minimum requirements to run a Java it will include: * Java Virtual Machine (JVM) * core classes * supporting files

give two points that describe the structure of a **procedural program**

* uses a structure that is comprised of a step by step call to procedures/functions (algorithmic style) * all data is stored in a global data structure and can be accessed by any part of the program

* Java Enterprise Edition, known as Java EE. The word ‘Enterprise’ refers to large, distributed programming environments. This is the Java used on the server side. * Java Standard Edition, known as Java SE. This is used on the client side.

what are the two editions of the **Java development kit (JDK)**

* Java 1.0 was released in 1996 and is used on both client and server side * The java standard edition is updated every six months usually just bug fixes and new libraries nothing code breaking * Java 8 was the last update that had significant changes

give three sidenotes concerning java versions and editions

* made up of objects that can hold there own data and know how to process that data * objects can share information between each other

describe the structure of an **object-oriented program**

what is the drawback of compiling directly to machine code

the drawback of this is that the compiled code will be specific to the platform it was compiled on

what is **bytecode**

an intermediate language that is understood by a virtual machine which in turn can either interpret or compile the intermediate language to machine code

java runtime environments (JRE) are public meaning that they will by default run any java code java development kits include a private JRE meaning that it will only run java code when we ask it to do so

describe the difference between public and private Java runtime environments

what is a **virtual machine**

a layer of software that mimics a computer.

explain the role of a **compiler**

translates entire source code to either machine code or bytecode

* Memory management * Process scheduling * Communicating with peripherals * Provide a user interface * Provide APIs so that applications and programs an access features of the OS

name 5 roles that are carried out by the operating system

what are three methods for **executing bytecode**

this includes * **interpretation** - an interpreter can be included in the virtual machine that can interpret the code at runtime * **static compilation** - the virtual machine can translate all code to machine code before the program is then executed using the machine code * **dynamic / just-in-time (JIT) compilation** - this mixture of interpretation and static comilation includes interpreting at run time but at the same time saving the machine code any subsequent executions then use the saved machine code

name 5 roles that are carried out by the operating system

* Memory management * Process scheduling * Communicating with peripherals * Provide a user interface * Provide APIs so that applications and programs an access features of the OS

describe the **domain** within object-oriented programmig

this is the problem we are trying to solve or a system and will employ objects in order to create the solution

a layer of software that mimics a computer.

what is a **virtual machine**

what are three methods for **executing bytecode**

describe the **java development kit** and some of the components it will consist of

this is used for developing Java applications it will include: * private java runtime environment (JRE) * an interpreter/loader (Java) * a compiler (javac) * an archiver (jar) * a documentation generator (Javadoc) * other tools needed in Java development

Chapter 1 - Prequel Flashcards

(42 cards)