Regarding Static Declaration

[surya.raaj prakash]

Hi Friends,

I'm new to Java Technology,please clarify my doubts.Can we declare the class and constructor as a static?

[Anjali Raman]

Helo,
Only a inner class can be defined as static, the top level class cannot be static.(Please correct me if I am wrong)
Also the constructor cannot be static, the compiler will complain in both these cases.

Cheers,
Anjali

[surya.raaj prakash]

Hi Anjali,

Thanks For Your Reply,

Can we call the static method from constructor?

[Muhammad Khojaye]

surya.raaj prakash wrote:Can we call the static method from constructor?

Have you try it out. What was the result?

[Anjali Raman]

Hi there,
yes you can call static methods from constructor. I have written a example here and hope it should make you understand things better.

   
public class StaticExamples {
	public StaticExamples(){
		System.out.println("TADA");
		getTestVal();
	}
	
	public static String getTestVal(){
		return "Hello";
	}
	public static void main (String args[]){
		StaticExamples ex = new StaticExamples();
	}
	
}
 

[surya.raaj prakash]

Hi Anjali,
Thank You.

But Why compiler not allowing to declare constructor as a static?

[Rob Spoor]

What's the use of adding it? It's already implicitly static since you cannot call it on an existing instance. Instead of allowing it, adding to more confusion, Sun decided that it's simply not possible. They could also have made it required but Sun know that programmer's are inherently lazy, and leaving out the static keyword for each constructor will save a lot of typing.

[surya.raaj prakash]

Hi Rob,
Thank You Very Much.

But one more doubt,please clarify to me,

But Why The class itself isn't "static",and there no such thing as a static class.But it is Static nested class.

[surya.raaj prakash]

Hi Rob,
Thank You Very Much.

But one more doubt,please clarify to me,

But Why The class itself isn't "static",and there no such thing as a static class and compiler not allowed.But it is Static nested class.

[John de Michele]

What do you think a static top-level class would mean?

John.