


Java documentation interpretation: Detailed explanation of the use of the add() method of the ArrayList class
Interpretation of Java documentation: Detailed explanation of the use of the add() method of the ArrayList class, specific code examples are required
In Java, ArrayList is one of the most commonly used data structures. It is a variable-length array that can store elements of different types. The add() method of ArrayList is used to add elements to the list. This article will explain the usage of the add() method in detail and provide specific code examples.
Syntax:
public boolean add(E element)
Parameters:
- element: The element to be added to the list.
Return value:
- true: if the element is added successfully.
- false: If element addition fails.
Note:
- ArrayList is a generic class, so you need to specify the type of element when using the add() method.
- add() method will add elements to the end of the list.
Code example:
import java.util.ArrayList; public class ArrayListDemo { public static void main(String[] args) { // 创建一个空的ArrayList列表 ArrayList<String> fruits = new ArrayList<>(); // 向列表中添加元素 fruits.add("Apple"); fruits.add("Banana"); fruits.add("Coconut"); // 打印列表中的元素 System.out.println("Fruits List: " + fruits); // 尝试向列表中添加重复的元素 if (fruits.add("Apple")) { System.out.println("Added successfully!"); } else { System.out.println("Add failed!"); } // 打印列表中的元素 System.out.println("Fruits List: " + fruits); } }
Output result:
Fruits List: [Apple, Banana, Coconut] Added successfully! Fruits List: [Apple, Banana, Coconut, Apple]
In the above example, we first created an empty ArrayList list. Then, we added three elements (Apple, Banana, and Coconut) to the list using the add() method. Next, we try to add a duplicate element (Apple) to the list, and the add() method will return false. Finally, we print all elements in the list.
Summary:
- The add() method of the ArrayList class is used to add elements to the list.
- add() method will add elements to the end of the list.
- If the element is added successfully, return true; otherwise, return false.
I hope this article can help you better understand the usage of the add() method of the ArrayList class.
The above is the detailed content of Java documentation interpretation: Detailed explanation of the use of the add() method of the ArrayList class. For more information, please follow other related articles on the PHP Chinese website!

The article discusses using Maven and Gradle for Java project management, build automation, and dependency resolution, comparing their approaches and optimization strategies.

The article discusses creating and using custom Java libraries (JAR files) with proper versioning and dependency management, using tools like Maven and Gradle.

The article discusses implementing multi-level caching in Java using Caffeine and Guava Cache to enhance application performance. It covers setup, integration, and performance benefits, along with configuration and eviction policy management best pra

The article discusses using JPA for object-relational mapping with advanced features like caching and lazy loading. It covers setup, entity mapping, and best practices for optimizing performance while highlighting potential pitfalls.[159 characters]

Java's classloading involves loading, linking, and initializing classes using a hierarchical system with Bootstrap, Extension, and Application classloaders. The parent delegation model ensures core classes are loaded first, affecting custom class loa


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Atom editor mac version download
The most popular open source editor

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

SublimeText3 Chinese version
Chinese version, very easy to use

WebStorm Mac version
Useful JavaScript development tools

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft