J1SE (Java 1 Standard Edition) VS J2EE (Java 2 Enterprise Edition)

Java 1 Standard Edition (J1SE) and Java 2 Enterprise Edition (J2EE) differ in their purpose and features. J1SE, now called Java SE, provides core functionality for Java programming and is used for developing general-purpose desktop applications. Its key features include core Java libraries, multithreading, and GUI capabilities. J1SE is typically used for standalone applications, desktop tools, and command-line programs. On the other hand, J2EE, currently known as Jakarta EE, extends Java SE to provide tools for building distributed, multi-tier, scalable, and enterprise-level applications. Its key features include servlets, enterprise Java beans, and web services. J2EE is typically used for web applications, enterprise applications, and large-scale distributed systems. The main differences between J1SE and J2EE lie in their scope, target, libraries, platform, complexity, and the requirement of an application server. Java SE provides the foundation and core tools, while Java EE adds enterprise capabilities for large-scale systems.