The object is created with new keyword At Compile-time At run-time None of these Depends on the code TRUE ANSWER : ? YOUR ANSWER : ?
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(); 2 and 4 3 and 4 1 and 2 1 and 3 TRUE ANSWER : ? YOUR ANSWER : ?
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 2 (must access x by writing Tester.x) Compile error at line 4 (invalid argument type for method main) 49 Compile error at line 1 (static x must be only accessed inside static methods) Compile error at line 3 (static methods can't make reference to non-static variables) TRUE ANSWER : ? YOUR ANSWER : ?
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) 44 Compile error at line 1 (static x must be only accessed inside static methods) Compile error at line 4 (invalid argument type for method main ) TRUE ANSWER : ? YOUR ANSWER : ?
What will be the output for the below code?public class Test{ static{ int a = 5; } public static void main(String[] args){ System.out.println(a); }} None of these Compile with error Runtime Exception 5 0 TRUE ANSWER : ? YOUR ANSWER : ?
Choose the correct statement. Restriction on static methods are: I. They can only call other static methods.II. They must only access static data.III. They cannot refer this or super in any way. (I), (II) and (III) Only (III) (I) and (II) Only (I) (II) and (III) TRUE ANSWER : ? YOUR ANSWER : ?
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;}} IllegalArgumentException is thrown at runtime. InsideDemo 10 Hello2 InsideDemo 10 Hello2 hello1 Compilation error. Hello2 InsideDemo 10 TRUE ANSWER : ? YOUR ANSWER : ?
A package is a collection of Editing tools Interfaces Classes Classes and Interfaces Editing tools and Interfaces TRUE ANSWER : ? YOUR ANSWER : ?
What will be the output for the below code?static public class Test{ public static void main(String[] args){ char c = 'a'; switch(c){ case 65 : System.out.println("one");break; case 'a': System.out.println("two");break; case 3 : System.out.println("three"); } }} one None of these Compile error - Illegal modifier for the class Test; only public, abstract & final are permitted. two Compile error - char can't be permitted in switch statement. TRUE ANSWER : ? YOUR ANSWER : ?
Name the keyword that makes a variable belong to a class, rather than being defined for each instance of the class. final abstract volatile native static TRUE ANSWER : ? YOUR ANSWER : ?