DECLARATION AND ACCESS CONTROL QUIZ

What will be the output?public class Test{static{int a = 5;}public static void main(String args[]){new Test().call();}void call(){this.a++;System.out.print(this.a);}}

Compile with error

5

0

Runtime Exception

6

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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 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 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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What will be the output after compiling and running following program code?public class Test{ static int a; public static void main(String[] args){ System.out.println("one"); call(1); } static void call(int a){ this.a=10; System.out.println("two "+a); }}

one two 10

None of these

one two 0

one two 1

Compile time error.

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What can directly access and change the value of the variable qusNo?package com.mypackage;public class Test{ private int qusNo = 100;}

Any class.

Only the Test class.

None of these

Any class that extends Test.

Any class in com.mypackage package.

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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"; }}

xyz

None of these

Compilation fails

Compilation clean but no output

abc

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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 2 (constructors can't be static)

Compile error at line 4 (invalid argument type for method main )

44

Compile error at line 1 (static x must be only accessed inside static methods)

Compile error at line 3 (static methods can't invoke this)

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A package is a collection of

Classes

Editing tools and Interfaces

Classes and Interfaces

Interfaces

Editing tools

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The object is created with new keyword

Depends on the code

At run-time

At Compile-time

None of these

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Determine output:public class InitDemo{static int i = demo();static{ System.out.print(i); }InitDemo(){System.out.print("hello1");}public static void main(String... args){ System.out.print("Hello2");} static int demo(){ System.out.print("InsideDemo");return 10;}}

InsideDemo 10 Hello2

IllegalArgumentException is thrown at runtime.

Compilation error.

Hello2 InsideDemo 10

InsideDemo 10 Hello2 hello1

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

This method is accessible from within the class itself and from within all classes defined in the same package as the class itself.

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.

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