Chapter 6: Arrays and Strings in Java
The chapter discusses arrays and strings in Java, detailing how they function as fundamental data structures. Arrays allow storage of fixed-size, similar data types and are indexed starting from 0, while strings represent sequences of characters and provide various built-in methods. It emphasizes the need for loops to traverse arrays and the immutability of strings in Java.
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Sections
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What we have learnt
- Arrays store fixed-size, same-type elements.
- Arrays are accessed by index, starting at 0.
- Use loops to traverse arrays.
- Strings are immutable objects storing text.
- Java provides many built-in methods for Strings.
- Strings are reference types, not primitives.
Key Concepts
- -- Array
- A fixed-size collection of similar data types stored in contiguous memory.
- -- String
- A sequence of characters in Java, treated as a class, not a primitive type.
- -- Indexing
- The method of accessing individual elements in an array, starting from 0.
- -- Immutability
- A property of strings in Java that indicates strings cannot be changed once created.
- -- ArrayList
- A resizable array implementation that allows dynamic sizing, covered in later chapters.
Additional Learning Materials
Supplementary resources to enhance your learning experience.