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if some method is static, then you can not call that method through the oobject of that class. but the name of the class.
let us see a example:
class Test
{
int a;
int b;
static void show()
{
System.out.println("we are in show");
}
}
class Main
{
public static void main(String args[])
{
Test t=new Test();
t.show();\\thiss is an erroraneous code. because, the method "show()" is static.
Test.show();\\this is correct
}
Arnas Sinha
Wiki User
∙ 11y ago
Wiki User
∙ 8y agoWhen you first declare a method, you would just write the word "static" before the name and parameter(s) of the method. An example of this is the main method often used for programming with Java: " public static void main(String[] args)".
Wiki User
∙ 8y agoTo declare a method as static (in Java), just write "static" in front of the method name.
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Do static methods operate on objects why?
No. Why? By definition. A static method is, precisely, a method that is not meant to operate on an object. It can only work with static fields, and other static methods, of its class.
Can a method be static and synchronized?
Yes. In Java methods can be static and synchronized. Static methods access other static members in the class. Static in case of inheritance are treated as non - static. Synchronized methods are those which have dedicated thread attached to it and no other can access until currrent thread leaves the control from it.
Why you can not use this pointer in static functions?
Because this points to the current object, but static methods don't have a current object (actually this is definition of the static methods).
What are the restriction on static functions in java?
Static Methods Can:Access only static variablesInvoke other static methods onlyStatic Methods cannot:Access Instance variablesInvoke instance or non-static methods
Who invoke main function in java?
The Java Runtime Environment invokes main methods.
How do you access the static variable and static methods of a class?
In java we access static variables and static methods without creating objects. i.e.,we can access directly by using classname we can also access static variables and static methods by using objects which are created by using class where the static variables and static methods are available
Do static methods operate on objects why?
No. Why? By definition. A static method is, precisely, a method that is not meant to operate on an object. It can only work with static fields, and other static methods, of its class.
Can a method be static and synchronized?
Yes. In Java methods can be static and synchronized. Static methods access other static members in the class. Static in case of inheritance are treated as non - static. Synchronized methods are those which have dedicated thread attached to it and no other can access until currrent thread leaves the control from it.
Why you can not use this pointer in static functions?
Because this points to the current object, but static methods don't have a current object (actually this is definition of the static methods).
What makes the use of static methods easy to understand?
There are many factors that contribute to the easy to understand nature of static methods. If one were to look in a dictionary, the definition of static is that it is constant. Thus in turn, this makes static methods easier to comprehend.
Can non static methods can access static variables?
Yes, they can
What are the restriction on static functions in java?
Static Methods Can:Access only static variablesInvoke other static methods onlyStatic Methods cannot:Access Instance variablesInvoke instance or non-static methods
Can an abstract method be declared static?
Yes. Abstract methods can be declared static
Who invoke main function in java?
The Java Runtime Environment invokes main methods.
How do you invoke the abstract methods?
You cannot invoke abstract methods directly. An abstract method looks like below: public String getName() {} It has no code inside it and can do nothing. You cannot invoke it directly. If you want to call this method then - we must extend the class that contains this method inside our class and then provide an implementation for this method and then invoke it: Ex: public String getName() { return "Anand"; } Once you place this code inside your class, then you can invoke it anytime you want by calling the method "getName()"
It is perfectly legal to any instance variable inside of a static method?
No. You will get compilation errors. The complier will complain that you are trying to access non static variables from inside a static method. A static method can access only static variables.
Can you inherit static method in java?
Yes. While it is sometimes considered bad style to override static methods, you can treat them like any non-static methods when it comes to inheritance topics.
