Java SE 21: Programming I Training

Basic understanding of any programming language or introductory Java knowledge is recommended

By the end of this training, you will have gained knowledge and skills in the following areas:

• Use variables, arrays, conditional statements, and loops to build programs

• Create simple Java classes and access fields/methods using object references

• Write and execute Java applications from the command line

• Begin working with Java’s Collections API

• Use Predicate Lambda expressions in basic scenarios

• Handle exceptions with Java’s exception handling mechanisms

• Apply foundational OOP principles: encapsulation, inheritance, and polymorphism

• Understand basic modular programming and define modules using module-info.java

• Navigate Java API documentation and work with Strings effectively

• Understand the basics of file access using NIO

• Practice coding interactively using JShell

🔹 1. Introduction to Java Programs

• Key Java language features

• Setting up the development environment

• Creating and running a Java Main class

🔹 2. Java Classes and the Main Method

• Defining and adding a main() method

• Basic structure of a Java class

🔹 3. Variables and Data Types

• Declaring variables

• Working with numbers and strings

• Performing numeric operations

🔹 4. Conditions and Lists

• Using IF/ELSE statements

• Managing item lists and processing them

🔹 5. Objects and Classes

• Declaring fields and methods

• Creating and initializing objects

• Accessing members using references

🔹 6. Data Formatting and String Operations

• Using the String and StringBuilder classes

• Referencing Java API documentation

• Type casting and promotion for primitives

🔹 7. Creating and Using Methods

• Defining methods with parameters and return types

• Static methods and variables

• Method overloading

🔹 8. Encapsulation

• Access modifiers (private, public, protected)

• Encapsulating fields

• Constructor overloading

🔹 9. Advanced Conditionals

• Relational and logical operators

• Implementing switch-case structures

• Introduction to the NetBeans debugger

🔹 10. Advanced Arrays and Loops

• Using dates and parsing args[]

• Working with two-dimensional arrays

• Nested loops and loop alternatives

• Introduction to ArrayList

🔹 11. Inheritance

• Creating subclasses and superclasses

• Overriding methods

• Defining and using abstract classes

🔹 12. Interfaces and Polymorphism

• Understanding polymorphism in Java

• Creating and implementing interfaces

• Using var for local variable inference

• Using List and Lambda expressions

🔹 13. Exception Handling

• Differences between checked and unchecked exceptions

• Throwing and catching exceptions

• Multi-catch blocks and error handling

🔹 14. Packaging and Modules

• Working with JAR files

• Java application architecture

• Declaring modules using module-info.java

• Overview of the modular JDK

🔹 15. Using JShell

• Writing interactive Java code with JShell

• JShell commands and IDE integration