Javase:3min to explain common modifiers __java

Today we'll take a look at the 7 most common modifiers, including permission modifiers (4): private,protected, default, public and state modifiers (2): Static,final and Abstract modifiers (1): abstract.

The following is a demo of the common classes and their compositions:
1. Class:

Class:
//private:illegal modifier for the class classpermissiontest only public, abstract & final are permitted
  
   //protected:illegal modifier for the class classpermissiontest; Only public, abstract & final are permitted
//public default OK

//static:illegal modifier for the class Classpermis Siontest; Only public, abstract & final are permitted
//final OK

//abstract OK public
class Classpermissiontest {
  

Conclusion:

Default, Public,final,abstract
Common: Public

2. Member variables:

	Member variable public
	int a = 1;
	protected int b = 2;
	int c = 3;
	private int d = 4;
	static int e = 5;
	final int f = 6;

Conclusion:
Private, default, protected,public,static,final
Common: Private

3. Construction Method:

	Construct Method-permission modifier
	//static:illegal modifier for the constructor in type classpermissiontest; only public, protected & P Rivate are permitted
	//final:illegal modifier for the constructor in type classpermissiontest; & private are permitted
	//abstract:illegal modifier for the constructor in type classpermissiontest; Protected & private are permitted
	private classpermissiontest () {}
	classpermissiontest (String s) {}
	protected classpermissiontest (int i) {} public
	classpermissiontest (Boolean b) {}

Conclusion:
Private, default, Protected,public
Common: Public

4. Member Methods:

	Member methods-permission modifiers, static, final, abstract all OK
	//abstract methods do not specify a body, parent class
	//abstract void Show ();
	void Show () {}

Conclusion:
Private, default, Protected,public,static,final,abstract
Common: Public

PS: When using abstract, the class must be an abstract class and the method cannot have a method body {}

Attached to the more common:
public static final int X = 10;
Public static/final/abstract Void Show () {}