Chapter 2 Vocabulary

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Chapter

2 Vocabulary

Algorithm: A set of steps that outline how to solve a problem

Argument

Data: Data passed to a method for processing.

Bytecode: A compiled Java source code

Class: defines the the of data and actions that will be associated with an object of that class, but not the actual data for an individual object.

Code conventions: A set of guidelines for writing an application.

Comment

Text: provide information about the program to the reader of the code.

Comment block: Multiline comments that describe a program, class or method are sometimes referred to as this.

Compiling: a way to translate code for the computer to understand.

Controlling class: A program's starting point

Encapsulation: Properly designed classes use this to hide implementation details in data.

Escape Sequence: A backslash followed by a symbol that together represent a character.

Execute: To run a program

Importable

Package: an application can use existing classes from another package.

Inheritance: Data is versatile enough to be extended through this.

Interpreter

Software: Software that runs each bytecode instruction of a compiled Java program.

Java application:A package with at least one class that contains a main() method.

Java Virtual Machine (Java VM): A way for the bytecode to be interpreted

Just-in-time compiler (JIT): Software that converts bytecode to specific machine code.

Library:(see Package.) A group of related classes.

Machine code: compromised of just 1s and 0s and is different depending on the computer platform

Method: a named set of statements that perform a single, well-defined task.

Object-oriented programming (OOP): evolved out of the need to develop complex programs in a systematic, modular approach.

Output Stream: Sends data to an output device, typically the computer screen.

Package: A group of related classes.

Platform-independent application: An application that can be run on all major operating systems.

Polymorphism: Gives the programmer data options with the help of this.

Pseudocode: An algorithm written in a mix of English and program code.

Run: See Execute

Source code: Java code typed by a programmer.

Statement: A set of instructions in a program.

String: A set of characters

Syntax error: A statement that violates the rules of Java

Chapter

2 Java: Just know these commands.

/* */ Used to enclose single or

multiline comments.

/** */ Used to enclose documentation comments.

// Used to

begin a single line comment.

{ } Used to begin and end a set of related

statements.

; Required

at the end of each program statement.

\\ Escape

sequence for displaying a backslash.

\" Escape

sequence for displaying a double quotation mark.

\n Escape

sequence for displaying a newline.

\t Escape

sequence for displaying a tab.

Define:

class: The description of an object

format(): Method that displays more precisely formatted output to the screen.

java.lang.System: The class that contains the out member

main(): The method in the controlling class that is automatically executed when a Java application is run.

out: The java.lang.System member that represents the standard output stream

package: Statement used to declare a package.

print(): Method that displays output to the screen.

public: An access modifier that declares a class or method as available to any code.

static: A declaration used for class methods.

void: Indicates a method will not return a value.