Declaration and Access Control
What is the result of compiling and running the following code?class Base{ private Base(){ System.out.print("Base"); }}public class test extends Base{ public test(){ System.out.print("Derived"); } public static void main(String[] args){ new test(); }}

Exception is thrown at runtime
Compilation Error
BaseDerived
Derived

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Declaration and Access Control
What will be the output for the below code?static public class Test{ public static void main(String[] args){ char c = 'a'; switch(c){ case 65 : System.out.println("one");break; case 'a': System.out.println("two");break; case 3 : System.out.println("three"); } }}

None of these
Compile error - Illegal modifier for the class Test; only public, abstract & final are permitted.
one
Compile error - char can't be permitted in switch statement.
two

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Declaration and Access Control
What is the result of compiling and running the following code?public class Tester{static int x = 4;public Tester(){System.out.print(this.x); // line 1Tester();}public static void Tester(){ // line 2System.out.print(this.x); // line 3}public static void main(String... args){ // line 4new Tester();}}

Compile error at line 4 (invalid argument type for method main )
Compile error at line 3 (static methods can't invoke this)
44
Compile error at line 2 (constructors can't be static)
Compile error at line 1 (static x must be only accessed inside static methods)

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Declaration and Access Control
Which statements are most accurate regarding the following classes?class A{ private int i; protected int j;}class B extends A{ private int k; protected int m;}

An object of B contains data fields i, j, k, m.
An object of B contains data fields k, m.
An object of B contains data fields j, m.
An object of B contains data fields j, k, m.

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Declaration and Access Control
Choose the correct statementpublic class Circle{ private double radius; public Circle(double radius){ radius = radius; }}

The program does not compile because Circle does not have a default constructor.
The program has a compilation error because we cannot assign radius to radius.
The program has a compilation error because it does not have a main method.
The program will compile, but we cannot create an object of Circle with a specified radius. The object will always have radius 0.

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Declaration and Access Control
Suppose a class has public visibility. In this class we define a protected method. Which of the following statements is correct?

In a class, you cannot declare methods with a lower visibility than the visibility of the class in which it is defined.
From within protected methods you do not have access to public methods.
This method is only accessible from inside the class itself and from inside all subclasses.
This method is accessible from within the class itself and from within all classes defined in the same package as the class itself.

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