The Collections class in java.util package.

Purpose

The Collections class in java.util package.

Key Methods

Method Description
key methods See JavaDoc for full API

Example 

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

Best Practices

  • Prefer Collections 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