Computing Java Unit 1

software

a collection of instructions that is run by a computer

source code

a collection of programming commands

integrated development environment

a software application for writing, compiling, testing, and debugging program code

syntax

the rules for how a programmer must write code for a computer to understand

class header

consists of the class keyword and the name of the class / public class MyClass {

class

a programmer-defined blueprint from which objects are created

package

a collection of similar classes

object

an instance of a class

attributes

characteristics of objects

behaviours

actions an object can perform

instantiate a new object

Painter myPainter = new Painter();

state

the attributes of an object that are represented by its instance variables

constructor

a block of code that has the same name as the class and tells the computer how to create a new object

procedural abstraction

allows a programmer to use a method by knowing what the method does even if they do not know how the method was written

boolean

primitive data type that can be either true or false

logic error

an error that occurs when the code runs but does not do what was expected

decomposition

the process of breaking a problem down into smaller parts

edge case

a bug that occurs at the highest or lowest end of a range of possible values or in extreme situations

redundant code

code that is unnecessary

open source code

code that is freely available for anyone to use, study, change, and distribute

inheritance class header

public class MyClass extends MyFirstClass {

public MyClass() {

super();

}

}

superclass

more general than a subclass and should not access the extra attributes and behaviours of a subclass

instantiate a method

public void MethodName() {

void method

a method that performs an action but doesn’t return a value

algorithm

a set of instructions to solve a problem or accomplish a task