Javaにおけるデータ型と例外処理

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.

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.

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.