Recommended Utility Libraries Guava Guava library maps.filterkeys - CSDN blog https://github.com/google/guava Overview (Guava: Google Core Libraries for Java HEAD-jre-SNAPSHOT API) Hutool Hutool reference documentation Core Concepts Q: What is the memory structure of an object? Original: https://www...
1. Java Basics 1.1 What are the data types in Java? Primitive types: byte (1), char (2), short (2), int (4), long (8), double (8), float (4), boolean (1) Reference types: classes, interfaces, enums, arrays 1.2 Differences between object-oriented and procedural programming? Both are development parad...
First Round 1、What's the output? Why? var b = 10; (function b(){ b = 20; console.log(b); })(); The output is function b(){}. In this self-invoking function, b is declared as a function. Although b = 20 tries to reassign it, function names have higher priority in their scope. Thus, b still references...
Fundamental Database Concepts Index Column Limits A single index in MySQL can encompass a maximum of 16 columns. Storage Engines MySQL utilizes storage engines to manage data storage, indexing, and retrieval mechanisms. The primary engines include: InnoDB: The default engine since version 5.5.5. It...
Data Types and Access Control Java distinguishes between primitive and reference data types. Primitives include byte (8-bit), short (16-bit), int (32-bit), long (64-bit), float (32-bit), double (64-bit), char (16-bit), and boolean. Reference types encompass classes, interfaces, arrays, enumerations,...
First Round What is a closure? What are its practical applications? A closure represents a function that retains access to variables from its outer scope, enabling communication between inner and outer function contexts. Common applications include timers, throttle functions, and debounce implemanta...
Self-Introduction Example Interviewer, hello! My name is Angela, 23 years old, from Guizhou. I graduated from Blue Sky Technical School with a major in Electronic Information Engineering and have two years of work experience. I previously interned at Huawei, where I was part of the Nova team respons...
