Modifier in Java

Like other languages, it is possible to modify classes, methods, etc., by using modifiers. There are two categories of modifiers:

• Access Modifiers: default, public , protected, private
• Non-access Modifiers: final, abstract, strictfp
  
  
  
  

   

  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 subclasses (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.
• The synchronized and volatile modifiers, which are used for threads.
  
  
  
   

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