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

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

The program has a compilation error because we cannot assign radius to radius.

The program does not compile because Circle does not have a default constructor.

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.

The program has a compilation error because we cannot assign radius to radius.

The program does not compile because Circle does not have a default constructor.

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Declaration and Access Control
Determine output:class A{{System.out.print("b1 ");}public A(){System.out.print("b2 ");}}class B extends A{static{System.out.print("r1 ");}public B(){System.out.print("r2 ");}{System.out.print("r3 ");}static{System.out.print("r4 ");}}public class Test extends B{public static void main(String[] args){System.out.print("pre ");new Test();System.out.println("post ");}}

r1 r4 pre b1 b2 post r3 r2

pre r1 r4 b1 b2 r2 r3 post

r1 r4 pre b1 b2 post

Compilation fail

r1 r4 pre b1 b2 r3 r2 post

r1 r4 pre b1 b2 post r3 r2

pre r1 r4 b1 b2 r2 r3 post

r1 r4 pre b1 b2 post

Compilation fail

r1 r4 pre b1 b2 r3 r2 post

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Declaration and Access Control
Determine Output:class MyClass{ static final int a = 20; static final void call(){ System.out.println("two"); } static{ System.out.println("one"); }}public class Test{ public static void main(String args[]){ System.out.println(MyClass.a); }}

one 20

one

one two 20

20

one two

one 20

one

one two 20

20

one two

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Declaration and Access Control
What will be the output?public class Test{ public static void main(String[] args){ String value = "abc"; changeValue(value); System.out.println(value); } public static void changeValue(String a){ a = "xyz"; }}

Compilation fails

abc

xyz

Compilation clean but no output

None of these

Compilation fails

abc

xyz

Compilation clean but no output

None of these

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Declaration and Access Control
Choose the correct statement. Restriction on static methods are: I. They can only call other static methods.II. They must only access static data.III. They cannot refer this or super in any way.

Only (I)

(I) and (II)

Only (III)

(II) and (III)

(I), (II) and (III)

Only (I)

(I) and (II)

Only (III)

(II) and (III)

(I), (II) and (III)

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Declaration and Access Control
A method within a class is only accessible by classes that are defined within the same package as the class of the method. Which one of the following is used to enforce such restriction?

Declare the method with the keyword private.

Declare the method with the keyword public and private.

Do not declare the method with any accessibility modifiers.

Declare the method with the keyword protected.

Declare the method with the keyword public.

Declare the method with the keyword private.

Declare the method with the keyword public and private.

Do not declare the method with any accessibility modifiers.

Declare the method with the keyword protected.

Declare the method with the keyword public.

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Declaration and Access Control

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

Declaration and Access Control Determine Output:class MyClass{ static final int a = 20; static final void call(){ System.out.println("two"); } static{ System.out.println("one"); }}public class Test{ public static void main(String args[]){ System.out.println(MyClass.a); }}

Declaration and Access Control What will be the output?public class Test{ public static void main(String[] args){ String value = "abc"; changeValue(value); System.out.println(value); } public static void changeValue(String a){ a = "xyz"; }}

Declaration and Access Control Choose the correct statement. Restriction on static methods are: I. They can only call other static methods.II. They must only access static data.III. They cannot refer this or super in any way.

Declaration and Access Control A method within a class is only accessible by classes that are defined within the same package as the class of the method. Which one of the following is used to enforce such restriction?

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

Declaration and Access Control
Determine Output:class MyClass{ static final int a = 20; static final void call(){ System.out.println("two"); } static{ System.out.println("one"); }}public class Test{ public static void main(String args[]){ System.out.println(MyClass.a); }}

Declaration and Access Control
What will be the output?public class Test{ public static void main(String[] args){ String value = "abc"; changeValue(value); System.out.println(value); } public static void changeValue(String a){ a = "xyz"; }}

Declaration and Access Control
Choose the correct statement. Restriction on static methods are: I. They can only call other static methods.II. They must only access static data.III. They cannot refer this or super in any way.

Declaration and Access Control
A method within a class is only accessible by classes that are defined within the same package as the class of the method. Which one of the following is used to enforce such restriction?