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 None of these Compilation clean but no output Compilation fails abc xyz None of these Compilation clean but no output ANSWER DOWNLOAD EXAMIANS APP
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 j, 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, k, m. An object of B contains data fields j, 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, k, m. ANSWER DOWNLOAD EXAMIANS APP
Declaration and Access Control You have the following code in a file called Test.javaclass Base{ public static void main(String[] args){ System.out.println("Hello"); }}public class Test extends Base{}What will happen if you try to compile and run this? Compiles and runs with no output. Compiles and runs printing Runtime error It will fail to compile. Compiles and runs with no output. Compiles and runs printing Runtime error It will fail to compile. ANSWER DOWNLOAD EXAMIANS APP
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 3 (static methods can't invoke this) Compile error at line 2 (constructors can't be static) Compile error at line 1 (static x must be only accessed inside static methods) 44 Compile error at line 4 (invalid argument type for method main ) Compile error at line 3 (static methods can't invoke this) Compile error at line 2 (constructors can't be static) Compile error at line 1 (static x must be only accessed inside static methods) 44 Compile error at line 4 (invalid argument type for method main ) ANSWER DOWNLOAD EXAMIANS APP
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? This method is only accessible from inside the class itself and from inside all subclasses. From within protected methods you do not have access to public methods. 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. This method is only accessible from inside the class itself and from inside all subclasses. From within protected methods you do not have access to public methods. 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. ANSWER DOWNLOAD EXAMIANS APP
Declaration and Access Control 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;}} Compilation error. Hello2 InsideDemo 10 IllegalArgumentException is thrown at runtime. InsideDemo 10 Hello2 hello1 InsideDemo 10 Hello2 Compilation error. Hello2 InsideDemo 10 IllegalArgumentException is thrown at runtime. InsideDemo 10 Hello2 hello1 InsideDemo 10 Hello2 ANSWER DOWNLOAD EXAMIANS APP
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