The ArrayList class in java.util package.

Purpose

The ArrayList class in java.util package.

Key Methods

Method Description
key methods See JavaDoc for full API

Example 

  ArrayList obj = /* instantiate or obtain reference */;
// Use ArrayList per JavaDoc

Best Practices

  • Prefer ArrayList from java.java.util over custom reimplementations
  • Check thread safety requirements before sharing instances across threads
  • Consult the official JavaDoc for version-specific behavior changes
  • Use try-with-resources when the API implements AutoCloseable