- If you have a requirement where the method’s behavior is independent of the state of the object then you go for static method.
- Static methods can only access other static methods
Static methods have several restrictions:
They can only invoke other static methods.
package com.ibytecode.keywords.staticdemo;
public class Student {
static int count; //Initialized to zero
public static int count() { return count;}
public static int getCount()
{
reading("Java");//ERROR
return count(); //OK.
}
public void reading(String book){ }
}
Compiler error:
Cannot make a static reference to the non-static method reading(String) from the type Student
They can only access static data/variable.
package com.ibytecode.keywords.staticdemo;
public class Student {
int id;
static int count;
public static int getCount()
{
++id;//ERROR
return count; //OK.
}
}
They cannot use this or super in any way.
