Java Quiz

Real world objects share what two characteristics?

In object-oriented programming how is state represented?

In object-oriented programming how is behavior represented?

What is the purpose of a class

Based on best practices and how the Java API Library is implemented a class should start with a capital letter(i.e. Dog versus dog)

When defining a class, member variables are included within the class's open/close curly braces (i.e. {}) and methods are defined outside of the open/close curly braces.

Information hiding is accomplished via encapsulation

Which of the following is the correct code for instantiating the class Dog?

Which part of the following statement is the instance of the created object? Dog puppy = new Dog();

In the following statement , Dog puppy = new Dog(); what is "Dog()" called?

Regarding inheritance the existing class is called

The new class is called

How many superclasses can a subclass have?

How many subclasses can a superclass have?

Given the definition public class KeyTerminology{} what is public called?

What type of implementation behavior is the following class definition doing? Public class SubclassDog extends Dog{}

When creating a subclass from a superclass what key word must precede the existing superclass?

What behavior is the followind code implementing? Public class DogTwo implements Dog{}

What is the minimum number of interfaces a class can implement?

What is the maximum number of interfaces a class can implement

What is the purpose of paackages in Java as an object oriented programming language?

Which of the following is NOT the number of operands an operator can perform specific operations on?

Operators do not have precedence rules

Which of the following are ways to output to the console during runtime?

What is the difference between System.println() and System.out.print()?

The + (plus sign) has two purposes in the Java programming languages, select the two that are correct.

Unary operators use how many operands

What is true about the ternary operator? Select all that apply

Instanceof is

In object -oriented programming where are inner classes defined?

Which of the following NOT the number of operands an operator can perform specific operations on?

Operators do NOT have precedence rules

How are statements in a source code file normally executed?

What is the purpose of control flow statements?

What is the most basic of all control flow statements?

An if/else provides what?

Given the following class and interface definitions (location does not matter): static class Parent {} static class Child extends Parent implements MyInterface {} interface MyInterface {} public static void main(String[] args) { Parent obj1 = new Parent(); Parent obj2 = new Child(); boolean result = (obj1 instanceof Parent); } What is the value of result?

Given the following class and interface definitions (location does not matter): static class Parent {} static class Child extends Parent implements MyInterface {} interface MyInterface {} public static void main(String[] args) { Parent obj1 = new Parent(); Parent obj2 = new Child(); boolean result = (obj2 instanceof Parent); } What is the value of result?

Given the following class and interface definitions (location does not matter): static class Parent {} static class Child extends Parent implements MyInterface {} interface MyInterface {} public static void main(String[] args) { Parent obj1 = new Parent(); Parent obj2 = new Child(); boolean result = (obj1 instanceof Child); } What is the value of result?

Given the following class and interface definitions (location does not matter): static class Parent {} static class Child extends Parent implements MyInterface {} interface MyInterface {} public static void main(String[] args) { Parent obj1 = new Parent(); Parent obj2 = new Child(); boolean result = (obj2 instanceof MyInterface); } What is the value of result?

If the condition being evaluated in the source code below evaluates false, what happens? If(age >= 18) System.out.println("You are old enough to vote! Please register to vote, elections are this year!");

An if/else provides what?

Given the source code below, what would be the output to the console? Int age= 18; if(age >= 21) system.out.println("You are old enough to purchase alcohol"); else System.out.println("You are not old enough to purchase alcohol");

If you need evaluated more than one condition which decision-making statement is the best?

In an if/else if/else, once a condition is satisfied, are the remaining conditions evaluated?

In an if/else is the final else leg REQUIRED?

For a switch decision-making statemnet is there a limitition on the data type of the evaluated variable (o.e. ANY data type including instances of classes)?

What is the body of the switch decision making statement called?

For each case label in a switch decision-making statement the break is not required but are necessary to prevent statements in switch blocks from falling through

In the final case label of a switch decision-making statement, the break is still required and necessary