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

Any class that extends Test.
Any class in com.mypackage package.
Only the Test class.
None of these
Any class.

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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;int y = 9; public Tester(){System.out.print(this.x); // line 1printVariables();}public static void printVariables(){System.out.print(x); // line 2System.out.print(y); // line 3}public static void main(String... args) { // line 4new Tester();}}

Compile error at line 3 (static methods can't make reference to non-static variables)
Compile error at line 1 (static x must be only accessed inside static methods)
49
Compile error at line 4 (invalid argument type for method main)
Compile error at line 2 (must access x by writing Tester.x)

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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 public.
Declare the method with the keyword protected.
Declare the method with the keyword public and private.
Do not declare the method with any accessibility modifiers.
Declare the method with the keyword private.

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