JAVA is one of the most widely used programming languages powering online applications such as Twitter, Nextflix and LinkedIn. JAVA is one of the most used languages in fintech (finance technology) companies such as Internet Banking, Insurance and Payment services. Android Mobile Apps run on JAVA Virtual Machine (JVM). JAVA programmers are in very high demand globally. Despite the Java applications are written using many open source frameworks, the foundation is Core JAVA. Unless someone masters the foundation (Core Java) they WON'T be able to work with ANY other Java based frameworks such as Android (Java), Spring, Struts or Quarkus. And learning JAVA is Easy provided you get right tutor/mentor.