"Write once, run anywhere" (WORA) probably the best part of JAVA. Write your code in .java file compile it to a .class file run on any Operating Systems. This machine independent class file give java popularity. They break the compiler into two parts one is core compiler which consists of Syntactic grammar checker, Lexical analyser, Context free grammar checker and the second part is called JVM where the execution happens. They made JVM machine dependent. So what you need to install machine specific JVM and run your code without scratching the head.Link to Buy Book :
Head First Java, 2nd Edition
Effective Java (2nd Edition)
Introduction to Java Programming, Comprehensive Version (7th Edition)
Java How to Program: Early Objects Version (8th Edition)
