MORE III
Java Knowledge Challenge
Test your Java programming skills with this engaging quiz designed to challenge your understanding of fundamental concepts. Whether you are a beginner or an experienced programmer, there are questions that will test your knowledge and help you learn.
Participate in the quiz to:
- Improve your coding skills
- Gain confidence in Java syntax and principles
- Have fun with programming challenges
Which of the following Java statements will output an integer number between 6 and 11 inclusive?
(a) System.out.println((int)(Math.random()*12+6));
(b) System.out.println((int)(Math.random()*6+6));
(c) System.out.println((int)(Math.random()*6+5));
(d) System.out.println((int)(Math.random()*12+5));
What will happen if we try to compile the following code? Assume that all the methods are defined inside a class called MyClass, and all the necessary classes have been imported.
Screenshot 2023-03-10 105256
A) It will display 13 on the output-window.
B) The code will NOT compile because of the ambiguous functioncall.
C) The code will NOT compile because the function overloading is NOT done appropriately.
What will be the output of the following code segment?
Screenshot 2023-03-10 105359
2
3
32
33
In the following code, what will be output of the code?
Screenshot 2023-03-10 105537
1
2
3
4
Code Will not compile
How many times the print statement in the following code segment will be executed?
Screenshot 2023-03-10 105650
1
2
3
Infinite number of times
The code will NOT compile
T or F: Any item in the heap will be assigned Java default value
True
False
True or False: Java program should have at least one class (driver class) and the main() method (driver method) inside it to start the program. The main() method is the entry point for any Java applications.
True
False
What is the first thing you do when writing a code?
Declare a class
Declare a method
Declare a driver method
What is the main() method also known as?
Driver class
Public class
Access modifier
Class delaration
What is the difference between PUBLIC and PRIVATE, and what are they?
C indicates that the method can be called/invoked/used from everywhere in the same package environment, and private restricts access to the specific method. Public and Private are known as Access Modifiers.
Public indicates that the method can be called multiple times, while private means that it can only be called once. Public and Static are Method Modifiers
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