Java is a general-purpose computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible. It is intended to let application developers “write once, run anywhere” (WORA), meaning that compiled Java code can run on all platforms that support Java without the need for recompilation. Java applications are typically compiled to bytecode that can run on any Java virtual machine (JVM) regardless of computer architecture. As of 2016, Java is one of the most popular programming languages in use, particularly for client-server web applications, with a reported 9 million developers. Java was originally developed by James Gosling at Sun Microsystems (which has since been acquired by Oracle Corporation) and released in 1995 as a core component of Sun Microsystems’ Java platform. The language derives much of its syntax from C and C++, but it has fewer low-level facilities than either of them.
Today java is used everywhere. Web applications, software development, mobile applications, embedded application are the main areas where java used often. Java is OOP language. It provides very nice features; it is also very simple language with wonderful features. To learn this course you must have basic programming language understanding.
This course covers topics like setting up java, first program of java, fundamental of java, class, java operators, while loop, for loop, array, switch, control statements, constructor, method constructors, inheritance, interface, abstract class, threading in java, exception handling.
So this course is all about essentials of java. Still you can explore more things about java. You can refer official documentation of java at https://docs.oracle.com/javase/tutorial/