Essential Java APIs: Strings, Exceptions, and Collections

Manipulate strings using common String class methods.

Explain String immutability and use StringBuilder for efficient string modification.

Handle exceptions using try-catch-finally blocks and the try-with-resources statement.

Differentiate between checked and unchecked exceptions.

Use key interfaces and classes from the Java Collections Framework (List, Set, Map).

Use ArrayList and LinkedList, explaining their performance trade-offs.

Use HashMap and HashSet for efficient data storage and retrieval.