Java APIs and Standard Libraries 📚
Java provides an extensive set of libraries and APIs that simplify development tasks.
Core APIs include:
java.lang
— fundamental classes likeString
,Math
,Object
.java.util
— collections framework (ArrayList
,HashMap
), date/time utilities.java.io
— input and output streams for file handling.java.net
— networking capabilities.java.sql
— database connectivity.
These libraries provide pre-built functions, enabling developers to focus on business logic.
Example: Using ArrayList
:
import java.util.ArrayList;
ArrayList<String> list = new ArrayList<>();
list.add("Java");
list.add("Python");
System.out.println(list);
Leveraging APIs accelerates development and promotes code reuse, ensuring robustness and efficiency.