Dynamic binding works for methods. Why not for other members [variables]? [duplicate]

Answer 1

As you overrided the super class method.

public int getField() {
        return field;
}

Answer 2

In Java, member variables have static binding because Java does not allow for polymorphic behavior with member variables.

private methods, as they are never inherited and the compiler can resolve calls to any private method at compile time only. Hence static binding.

Secondly, consider the below code..

class SuperClass{
...
public String someVariable = "SuperClass";
...
}

class SubClass extends SuperClass{
...
public String someVariable = "SubClass";
...
}
...
...

SuperClass superClass1 = new SuperClass();
SuperClass superClass2 = new SubClass();

System.out.println(superClass1.someVariable);
System.out.println(superClass2.someVariable);
...

Output:- SuperClass SuperClass

The member variable is resolved based on the declared type of the object reference only, which the compiler is capable of finding as early as at the compile time only and hence a static binding in this case.

In summary, basically Java developers didn't want these checks to happen till Run time and get an exception at that point.