Java入門

Kickstart your Java journey by writing and running your first program. Learn the basics of Java syntax, organize code with classes, and work with variables to store and manipulate data. By the end of this chapter, you will be ready to start coding in Java with confidence!

Master the building blocks of data in Java by working with variables and arrays. Explore primitive data types like int, double, boolean, and char, and learn how to store and manipulate text with Strings. Discover how to combine and transform Strings, and get hands-on with arrays to store multiple values efficiently.

Learn how to perform calculations and comparisons in Java using operators. Use arithmetic operators to add, subtract, multiply, divide, and modify numeric values. Then, explore comparison operators to check conditions like greater than, less than, and equality, laying the foundation for decision-making in Java programs.