Which of the following applies to a class rather than an object?

LohaHridoy
  1. Query
  2. Update
  3. Scope
  4. Constructor

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AhmedNazir

Call

Answer: Option 3

Let'

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Ms. Forest likes to let her students choose who their partners will be; however, no pair of students may work together more than seven class periods in a row. Adam and Baxter have studied together seven class periods in a row. Carter and Dennis have worked together three class periods in a row. Carter does not want to work with Adam. Who should be assigned to work with Baxter?

Answer: Option 1 Baxter should be assigned to study with Carter. Baxter cannot be assigned with Adam, because they have already been together for seven class periods. If Baxter is...

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What will be the output class A{ static void method(){ System.out.println("Class A method"); } } class B extends A{ static void method(){ System.out.println("Class B method"); } } public class Test{ public static void main(String args[]){ A a = new B(); a.method(); } }?

Answer: Option 1 Overriding in Java simply means that the particular method would be called based on the run time type of the object and not on the compile time...

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What will be the output interface A{ public void method(); } class One{ public void method(){ System.out.println("Class One method"); } } class Two extends One implements A{ public void method(){ System.out.println("Class Two method"); } } public class Test extends Two{ public static void main(String[] args){ A a = new Two(); a.method(); } }?

Answer: Option 2 Let'

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What will be the result of compiling and executing the following program code class Vehicle{ public void printSound(){ System.out.print("vehicle"); } } class Car extends Vehicle{ public void printSound(){ System.out.print("car"); } } class Bike extends Vehicle{ public void printSound(){ System.out.print("bike"); } } public class Test{ public static void main(String[] args){ Vehicle v = new Car(); Bike b = (Bike) v; v.printSound(); b.printSound(); } }?

Answer: Option 2 Let'

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What will be the result after the class Test execution class A{ public void doA(){ B b = new B(); b.dobB(); System.out.print("doA"); } } class B{ public void dobB(){ C c = new C(); c.doC(); System.out.print("doB"); } } class C{ public void doC(){ if(true) throw new NullPointerException(); System.out.print("doC"); } } public class Test{ public static void main(String args[]){ try{ A a = new A(); a.doA(); }catch(Exception ex){ System.out.print("error"); } } }?

Answer: Option 4 Let'

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What should be used to refer to a method in the context of a class rather than an object you use?

Answer: Option 4 Example- parent::__construct()

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Which technique enables the designer to mold and shape, rather than construct on object using a series of lines?

Answer: Option 1 Let'

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Which keyword is used to access a static method or property from within the same class(rather than from child)?

Answer: Option 3 Self is to classes what the $this pseudo-variable is to objects.

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Which class accepts a class name or an object reference and returns an array of interface name?

Answer: Option 1 is_subclass_of() will tell you only about class inheritance relationships. It will not tell you that a class implements an interface.

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 . . . . . . is a class which can only be instantiated once. You can effectively only have one object per . . . . . class in an application.?

Answer: Option 3 Let'

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