Core Java Complete Notes By Durga Sir Page

This article provides a comprehensive overview of the Core Java complete notes by

12. Cheat-sheets and Quick Reference

• Class: A blueprint/template.
• Object: A physical instance of a class.
• Instantiation: Student s = new Student();

  1. Hierarchy

  • Rule: byte -> short -> int -> long -> float -> double is automatic.
  • Rule: double -> float -> long -> int -> short -> byte requires explicit casting.
  • Special Case: int to char requires casting unless it's a literal within range.