Java problem, HELP
Question 6
The class Lightbulb contains a non-static void method with no...
Computers and Technology, 03.11.2020 03:20, oscar3231
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
Answers: 1
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