day05 Java Basics

1. Array initialization: Sets up memory space for arrays and assigns values to each array element. Array initialization mode:

Mode one: Dynamic initialization: Only the array length is specified when initializing, and the initial value is assigned by the system array.

Format: array type [] array name =new array type [array length];

Mode two: Static initialization: Given the initialization value, the system determines the length.

2. Memory allocation in Java: Stack stores local variables, heap stores new things, method zones, local method zones (and system-related), registers (for CPU use)

A local variable: A variable in a method definition or a method declaration is called a local variable.

day05 Java Basics