Java problem, HELP Question 6
The class Lightbulb contains a non-static void method with no parameters named turnOn. Suppose a Lightbulb object loungeLamp has been declared as follows:

Lightbulb loungeLamp = new Lightbulb();
Which of the following correctly calls the method turnOn?

loungeLamp. turnOn(Lightbulb);

Lightbulb. turnOn();

Lightbulb. turnOn(loungeLamp);

turnOn(loungeLamp);

loungeLamp. turnOn();

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Question 7
Which of the following could be the signature of a constructor from a class named CustomClass?

constructor(double x, double y);

CustomClassConstructor();

CustomClass(int num);

All options could be signatures for constructors for this class

newCustomClass();

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Question 8
What is stored in the variable s after the following code is executed?

int s = Math. sqrt(26);

5

5.0

Error: possible loss of precision

5.09901951359278

6

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Question 9
What is printed by the following code?

String a = "yarn";
String b = a;
a = b. toUpperCase();
System. out. println(a + b);

YARNyarn

Nothing is printed. An error is caused because toUpperCase is a void method.

YARNYARN

yarnyarn

yarnYARN

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Question 10
Which of the following is a call to a static method?

new Double()

a. intValue()

Math. random()

string1.length()

Integer. MAX_VALUE

Question 11
What is printed by the following code segment?

int x = 24601;
System. out. println(x. substring(3, 4));

60

6

01

Nothing is printed, an error occurs.

0