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 ");}} pre r1 r4 b1 b2 r2 r3 post Compilation fail r1 r4 pre b1 b2 post r1 r4 pre b1 b2 post r3 r2 r1 r4 pre b1 b2 r3 r2 post pre r1 r4 b1 b2 r2 r3 post Compilation fail r1 r4 pre b1 b2 post r1 r4 pre b1 b2 post r3 r2 r1 r4 pre b1 b2 r3 r2 post ANSWER DOWNLOAD EXAMIANS APP
Declaration and Access Control A package is a collection of Editing tools Interfaces Editing tools and Interfaces Classes and Interfaces Classes Editing tools Interfaces Editing tools and Interfaces Classes and Interfaces Classes ANSWER DOWNLOAD EXAMIANS APP
Declaration and Access Control Consider the following two classes declared and defined in two different packages, what can be added in class B to form what considered a correct access to class A from main() method of class B?package subPackage;public class A { }package anotherPackage;// line 1public class B{public static void main(String[] args){// line 2}}1. At line1 add noting; At line2 add: new A();2. At line 1 add: import package.*; at line 2 add : new subPackage.A();3. At line 1 add: import subPackage.*; at line 2 add : new A();4. At line 1 add: import subPackage.A; at line 2 add : new A(); 1 and 3 2 and 4 3 and 4 1 and 2 1 and 3 2 and 4 3 and 4 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Declaration and Access Control 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);}} 5 0 Runtime Exception Compile with error 6 5 0 Runtime Exception Compile with error 6 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. Runtime error Compiles and runs printing It will fail to compile. Compiles and runs with no output. Runtime error Compiles and runs printing It will fail to compile. ANSWER DOWNLOAD EXAMIANS APP
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 BaseDerived Derived Compilation Error Exception is thrown at runtime BaseDerived Derived Compilation Error ANSWER DOWNLOAD EXAMIANS APP
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