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Data Types and Exceptions in Java

IntermediateSkill Level
4.8+
467 reviews
Updated 04/2026
Learn to work with Plain Old Java Objects, master the Collections Framework, and handle exceptions like a pro, with logging to back it all up!
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JavaProgramming
4 hr
12 videos
40 Exercises
3,250 XP
3,050
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Course Description

Java is a powerful, widely used programming language, and understanding how it handles data is essential for writing clean, effective code. This course gives you a practical introduction to Java’s data modeling, collections, and error-handling tools.

Work with POJOs and Organize Code

Start by learning how to model data using Plain Old Java Objects (POJOs) and wrapper classes. You'll also explore how Java uses packages to group related classes and keep code organized.

Use the Collections Framework

Get to know Java’s built-in data structures—Lists, Sets, Maps, and Queues—and learn how to use them to store and manage groups of objects in different ways.

Handle Errors and Log Application Behavior

Wrap up by learning to handle exceptions using try/catch blocks and throw custom errors when needed. You’ll also add logging to your code to track and understand your program’s behavior. By the end, you’ll be able to structure data, work with Java collections, and write more reliable, maintainable applications.

Prerequisites

Introduction to Object-Oriented Programming in Java
1

Advanced Java Types

This chapter explores how Java handles and organizes data. You'll learn about Java's basic data types and structures, including how to use simple Java objects, called POJOs (Plain Old Java Objects). We'll also cover wrapper classes, which let you use primitive data types as objects. Finally, you'll see how Java groups related classes into packages.
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2

Collections Framework

Java’s Collections Framework gives you ready-to-use data structures for working with groups of objects. In this chapter, you’ll learn how to use Lists, Sets, Maps, and Queues to organize and manage data in different ways.
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3

Exception Handling

In this chapter, you'll learn how Java handles problems using exception handling. You'll use try/catch blocks to deal with errors, throw exceptions when needed, and add logging to track what your application is doing.
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Data Types and Exceptions in Java
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FAQs

What knowledge should you have prior to taking this course?

Before taking this course, you should be comfortable with the basics of Java, including its syntax, control flow (like loops and conditionals), and core object-oriented programming concepts such as classes, objects, and inheritance. If you've completed courses like Introduction to Java and Introduction to Object-Oriented Programming in Java, you're in a great position to move forward. This course builds on those foundations to help you take the next step toward becoming a confident Java developer.

What will you learn?

In this course, you’ll learn how to model and manage data using Java objects and built-in data structures like Lists, Sets, Maps, and Queues. You’ll also develop essential skills for handling exceptions, Java’s way of managing errors, and gain hands-on experience with logging to help you debug and monitor your applications. By the end, you’ll be equipped to write more organized, reliable, and maintainable Java code.

Why take this course?

This course prepares you to move beyond the basics and start building more complex, real-world Java applications. You’ll gain the confidence and skills to contribute to the design and development of Java projects, making you a stronger collaborator and a more capable Java developer.

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