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Discuss doubts in @javaforfree
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Discuss doubts in @javaforfree
👍4
What is the purpose of the "interface" in Java?
Anonymous Quiz
31%
To provide a blueprint for creating objects
42%
To define a set of rules for implementing classes
21%
To store variables and methods that can be accessed globally
5%
To handle errors and exceptions in a program
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What is the main purpose of encapsulation in Java? #oops
Anonymous Quiz
17%
To make code more readable
67%
To hide implementation details and expose a public interface
7%
To ensure code executes without errors
8%
To allow multiple inheritance
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Which OOP concept helps in achieving data hiding and abstraction?
Anonymous Quiz
13%
Inheritance
71%
Encapsulation
10%
Polymorphism
6%
Composition
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Which access modifier provides the widest(maximum) accessibility in Java?
Anonymous Quiz
80%
public
9%
private
5%
protected
6%
default
👍6
What is the main advantage of using OOP in software development?
Anonymous Quiz
16%
It allows for procedural programming
33%
It reduces code reusability
42%
It makes the code easier to maintain and understand
9%
It eliminates the need for modular programming
Any experienced React developers here ? reply to this post
Which SOLID principle suggests that a class should be open for extension but closed for modification?
Anonymous Quiz
25%
Encapsulation
17%
Polymorphism
25%
Abstraction
33%
Open/Closed Principle
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What is the output of the code above?
Anonymous Quiz
19%
The code does not compile due to Line 4.
31%
The code throws a runtime exception error.
15%
The day you prefer: Monday
35%
The day you prefer: Tuesday
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Which one of the following can be inherited in Java?
Anonymous Quiz
22%
Enum
16%
Final classes
34%
Constructors
28%
None of the above
👍7😈2
If a thread is defined in a public class in Java, "public class Java implements Runnable", how can we call this thread within another class?
Anonymous Quiz
29%
Thread thread = new Thread(new Java());
12%
Thread thread = new Java();
21%
Thread thread = new Thread(Java);
28%
All of the above
10%
None of the above
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Java Code:
public class MainExample {
public static void main(String args[]) {
String str = "6";
long l = Long.parseLong(str);
l = 4; // Line x
System.out.println(l);
}
}What is the output of the code snippet above?
Anonymous Quiz
22%
6
50%
4
28%
The code does not compile because of Line x.
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Java Code:
public class MainExample {
public static void main(String args []) {
long value = 2000;
do {
System.out.print("The result: " + value);
}
while (value < 2000);
}
}👍5❤1
What is the output of the code above?
Anonymous Quiz
56%
The result: 2000
28%
The code doesn't print anything to the screen.
17%
The code throws a runtime exception.
👍6❤1
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