Java grundkurs

Background and Overview

• Language evolution & Versions
• Editions & Distributions
• Vendors & Implementations
• Documentations

1 - THE LANGUAGE

The language syntax, data types and statements.

Compilation & Execution of a Java Program

• The syntax at a glance
• A typical Java program
• How to compile
• How to execute
• The directory structure of sources and classes

Data Types & Operators

• Line and block comments
• Identifiers
• Reserved words
• Variables
• Integral data-types and literals
• Floating-point data-types and literals
• Boolean
• Characters
• Strings
• Arrays
• Enums
• Arithmetic operators
• Assignment expression operators
• Relational operators
• Logical operators
• Conditional operator
• Printing to the console

Statements

• If statements
• While loops
• For loops
• For-each loops
• Break & continue
• Switch statements
• Imports of classes
• Reading data from the console

Functions

• Function declarations
• Static functions
• Overloaded functions

2 - CLASSES

Syntax and usage.

Class Syntax

• Data abstraction and the idea of classes
• Syntax
• Visibility
• Constructors
• Member variables
• Initialization
• Pointers in Java
• Pointer this
• Null pointers
• Function toString
• Static members

Extended Classes

• Extendable strategies and the idea of inheritance
• Syntax
• What do we mean by inheritance
• Creating sub-class objects
• Dynamic binding of function calls
• Usage of @override
• Final methods
• Abstract functions and classes

Interfaces

• The purpose of using interfaces in Java
• Interface constants
• Static interface functions
• Default interface functions

Exceptions

• What is an exception
• Throwing and catching exceptions
• Understanding the flow of control
• Stack traces
• Checked and unchecked exceptions
• JVM errors
• Standard exception classes

Inner Classes

• Static inner classes
• Anonymous classes
• Class constructors
• Anonymous constructors
• Function finalize()

Special Classes

• Enum classes
• Wrapper types
• Conversion functions
• Autoboxing
• Class java.lang.Object
• Class java.lang.Class
• Class loading

Generics

• Generic functions
• Generic classes
• Generic interfaces
• Type restrictions

Lambda Expressions

• What is a lambda expression
• What is a functional interface
• Basic syntax
• Various use cases
• Instance method reference
• Static method reference
• Constructor method reference
• Lambda oriented functional interfaces

Annotations

• What is an annotation
• Usage of annotations in various libraries
• Syntax
• Default values
• Single value attribute
• Specifing annotation placements
• Keeping annotations until run-time

3 - THE LIBRARY

The most used parts of the large standard library.

Text Manipulations

• String
• StringBuilder
• Pattern & Matcher
• Regex support in java.lang.String
• Class Formatter
• Class SimpleDateFormatter

Date & Times

• Date
• Calendar
• Typical idioms for date-time manipulations
• Overview of the date-time support in Java 8
• Calendar Builder

Collections

• Overview of interfaces and implementing classes
• List & Array-/LinkedList
• Map & HashMap & TreeMap
• Understanding the for-each loop
• Utility classes
• Ordering of objects
• Queue
• Iterator
• Class Properties
• Class PropertyResourceBundle

Input & Output

• Text-oriented I/O
• Reader & Writer
• File
• Typical I/O idioms
• Binary I/O
• Input-/OutputStream
• Serialization
• Class java.io.File
• Path & Paths
• Utility class java.nio.file.Files

Pipeline Streams

• What is a pipeline stream
• The anatomy of a pipeline
• Stream sources
• Bounded streams
• Aggregators
• Collectors
• Collection aggregation
• String element joining
• Understanding reduce()
• Function filter()
• Function map()
• Sorting
• Other filters

4 - DEVELOPMENT

Brief about how to develop Java applications.

JARs & DOCs

• Understanding JAR files
• Setting the class-path
• Packing a library into a JAR file
• Executable JARs
• Understanding JavaDocs
• Running javadoc

Build Tools

• What is a build toll
• Typical build tool tasks
• Evolution of Java build tools
• What is a dependency
• What is an artefact repository
• How to find 3rd party open-source libraries
• What is a Maven proxy server
• What is a Maven artefact repository server
• Contemporary development work-flow
• Brief introduction to Gradle

Application Types

• Applications with GUI
• Java Web Start
• Servlets & JSP
• EJB
• REST WS applications
• Tests