In Java, are access specifiers and access modifiers the same thing?
"access modifier" is the official term for private
, protected
and public
used in the Java language specification. "access specifier" is used synonymously in the Java API doc, but this is the first time I've noticed that. It's probably better to stick with the JLS term.
Referring to the Sun Java Docs they both seem to be the same:
Access Modifier
- Search for
access specifier
on this page.
Java has basically 2 types of Modifiers:
- java access modifiers
- java non-access modifiers
Java access modifiers and Java access specifiers are the same thing, which are public
, private
, protected
.
In some older languages public, private, protected and default like C++ are considered as access specifiers and everything else is considered as access modifier but in Java there is no terminology for specifier, everything is by default considered as modifier only. So public, private, protected, default, final, abstract, static, strictfp, synchronized, native, transient and volatile are all modifiers only.
Simple test for it is when we compile the following code
private class Test{ }
we will get compile time error saying that modifier private not allowed here. This is true for other modifiers also. Maybe java compiler (javac) sees everything as a "modifier" only.
There is nothing known as "Access specifiers" in java, there are only Access modifiers in java
The misconception is from languages like C++ where public, private, protected, default are considered as Access specifiers and remaining (static, final, etc) are considered as access modifiers
Following is the proof as compiler says "modifier private not allowed here" i.e. compiler said modifier and not specifier
According to me, yes, both terms refer to the same thing and are used interchangeably.
That JDI reference is the only place I have ever seen the term 'access specifier' used in a Java specification. Even there, public/protected/private/package are also called 'modifiers'. There's really no reason to ever use the term 'access specifier' in Java, it is clearly just a mistake on one page out of many thousands.
Technically speaking private, public, protected and default are treated as access specifiers. These deal with who can ... questions. The modifiers afaik are volatile, final, static, transient etc. These deal with how does .. aspect.
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