Declaration and Access Control Name the keyword that makes a variable belong to a class, rather than being defined for each instance of the class. volatile static abstract native final volatile static abstract native final ANSWER DOWNLOAD EXAMIANS APP
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 and private. Declare the method with the keyword 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 public and private. Declare the method with the keyword private. Do not declare the method with any accessibility modifiers. Declare the method with the keyword protected. Declare the method with the keyword public. 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;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 2 (must access x by writing Tester.x) Compile error at line 4 (invalid argument type for method main) 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 2 (must access x by writing Tester.x) Compile error at line 4 (invalid argument type for method main) 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;}} InsideDemo 10 Hello2 hello1 Hello2 InsideDemo 10 IllegalArgumentException is thrown at runtime. InsideDemo 10 Hello2 Compilation error. InsideDemo 10 Hello2 hello1 Hello2 InsideDemo 10 IllegalArgumentException is thrown at runtime. InsideDemo 10 Hello2 Compilation error. ANSWER DOWNLOAD EXAMIANS APP
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 ");}} Compilation fail pre r1 r4 b1 b2 r2 r3 post r1 r4 pre b1 b2 post r1 r4 pre b1 b2 post r3 r2 r1 r4 pre b1 b2 r3 r2 post Compilation fail pre r1 r4 b1 b2 r2 r3 post 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 What can directly access and change the value of the variable qusNo?package com.mypackage;public class Test{ private int qusNo = 100;} Any class in com.mypackage package. Only the Test class. Any class that extends Test. None of these Any class. Any class in com.mypackage package. Only the Test class. Any class that extends Test. None of these Any class. ANSWER DOWNLOAD EXAMIANS APP
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