What Is an Method in Java? Can It Be Overridden? [Duplicate]
Method Can Be Found in Stacktrace, for Example. as I Understood It Represents Initialization Done in Constructor. If You Try to Execute Object. Class...
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<init> method can be found in stacktrace, for example.
As I understood it represents initialization done in constructor.
If you try to execute
Object.class.getDeclaredMethod("<init>");
You'll get java.lang.NoSuchMethodException.
What is this method? When was it added to class? (in compilation - execution terms) Is it virtual, can one anyhow override it?
2 Answers
Have a look at the Java Virtual Machine Specification, chapter 2.9. It say on the <init> name:
At the level of the Java Virtual Machine, every constructor written in the Java programming language (JLS §8.8) appears as an instance initialization method that has the special name
<init>. This name is supplied by a compiler. Because the name is not a valid identifier, it cannot be used directly in a program written in the Java programming language.
That's why <init> can be found on the stack trace, but is not accessible with code.
What is an
<init>method in Java?
It is a constructor. That's why you get a NoSuchMethodException when you try to call it as a method.
Can it be overriden?
No.
And if you see a <clinit> method, that is the classes static initialization "method".
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