Consider the following class definition: public class Widget \{ private int value; public Widget (int val) \{ value = val; public int get ()\{ return value; public void set (int n ) \{ value =n; After the following client code executes: Widget w1= new Widget(5); Widget w2=w1; w2. set(1); what is the value of the following expression? w1.get ( ) a. 0 b. w1 is no longer valid c. 1 d. 5 Consider the following Counter class: public class Counter \{ private int count =0; public Counter() count =0; public void increment() \{ count++; public int get() \{ return count; public void reset ()\{ \} count =0; Next, consider the following client code fragment: Counter cnt1 = new Counter () ; Counter cnt2 = new Counter(); Counter cnt3 = new Counter(); cnt1. increment (); // A. cnt1. increment (); cnt1. increment (); cnt2. increment (); // B. cnt3. increment (); cnt3. increment (); //C. During the execution of the increment method invoked from the statement labeled A in the code fragment, to which object does the this reference refer? During the execution of the increment method invoked from the statement labeled B in the code fragment, to which object does the this reference refe During the execution of the thod invoked from the statement labeled C in the code fragment, to which object does the this reference refe It never is legal to use the this reference in a class method. Select one: True False The this reference is a secret parameter passed to all instance methods. Select one: True False An instance method of a class may access both instance variables and class variables of the class. Select one: True False Consider the following class definition: public class widget \{ private int value; public Widget (int val) \{ value = val \} public int get() \{ return value; \} public void set(int n ) \{ value =n; \} \} In the following client code, is the object that w references mutable or immutable? Widget w= new Widget (5); a. it is mutable b. it is both mutable and immutable c. it is neither mutable nor immutable d. it is immutable Consider the following class definition: public class Connector \{ public Connector (int con) \{ /* Details omitted / \} public Connector() \{ \} /* 0ther details about the Connector class omitted. */ \} The second constructor overload should invoke the services of the other constructor, passing the default value of 0 (zero). Complete the missing code with the correct choice. Consider the following class definition