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Which of the following statements are incorrect?Select one:static methods can not refer to this or super in any waystatic methods must only access static datawhen object of class is declared, each object contains its own copy of static variablesstatic methods can call other static methods only

Question

Which of the following statements are incorrect?Select one:static methods can not refer to this or super in any waystatic methods must only access static datawhen object of class is declared, each object contains its own copy of static variablesstatic methods can call other static methods only

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Solution

The incorrect statement is: "when object of class is declared, each object contains its own copy of static variables".

Explanation: In Java, static variables are class variables, not instance variables. When a variable is declared as static, then a single copy of the variable is created and shared among all objects at the class level. Static variables are, essentially, global variables. All instances of the class share the same static variable.

The other statements are correct. Static methods can't refer to this or super in any way because they belong to the class, not an instance of the class. Static methods can only access static data for the same reason. And static methods can indeed call other static methods.

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