Access Control Modifiers: 


Java provides a number of access modifiers to set access levels for classes, variables, methods and constructors. The four access levels are: 

• Visible to the package. the default. No modifiers are needed.  Visible to the class only (private). 
•  Visible to the world (public). 
• Visible to the package and all sub-classes (protected). 

Non Access Modifiers: Java provides a number of non-access modifiers to achieve many other functionality. 

• The static modifier for creating class methods and variables 
• The final modifier for finalizing the implementations of classes, methods, and variables. 
• The abstract modifier for creating abstract classes and methods.

Java Operators::-

1.  Arithmetic Operators 
2.  Relational Operators 
3.  Bit-wise Operators 
4.  Logical Operators 
5.  Assignment Operators 
6.  Misc Operators.