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Void constructors in java
I tried to define a constructor as āpublic voidā, so it results nothing. But if i write only public,it results. Why is this like that?
5 Respostas
+ 2
when you include void the only valid construct in this case is a method declaration, so you have a method with the signature "telephone ()" which isn't the same as the class "telephone". Since you don't invoke the method, nothing happens.
In the other case you have declared a constructor, and any code will execute on object creation. This is the reason for the difference
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class telephone{
public void telephone(){
System.out. println(āhello worldā);
}
}
public class nokia{
public static void main(String[] args) {
telephone obj=new telephone();
}
}
if i write like this,nothing is shown. but if i only write āpublic telephoneā so it writes āhello worldā.
i wonder why the reason is . And i know constructors dont have return type. so why it is not allowing āvoidā there?
thanks for all the answers.
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Please post a code demonstrating what you mean
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Constructors don't have a return type. By nature, a constructor must be void, and thus you don't include a return type when you're defining it
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It's just proper syntax to have "public telephone()" without void. I'm honestly surprised you're not getting a syntax error (: