What is the parent class of all classes in Java?

JAVA development quiz 1

Quiz
•
Other
•
University
•
Medium

Gnaneshwar Reddy
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
a) Object
b) Parent
c) Base
d) Root
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the "break" keyword in Java?
a) To terminate the program immediately.
b) To exit from a loop or switch statement.
c) To skip the current iteration of a loop.
d) To skip the current case in a switch statement.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the output of the following code snippet?
String str = "Hello";str.concat(" World");
System.out.println(str);
a) Hello
b) Hello World
c) World
d) Compilation error
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements is true about Java interfaces?
a) Interfaces can contain instance variables.
b) A class can implement multiple interfaces with the same method names.
c) Interfaces can be instantiated directly.
d) Interfaces can have constructors.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the output of the following code snippet?
String str1 = "hello";String str2 = "hello";
System.out.println(str1 == str2);
a) true
b) false
c) Compilation error
d) Runtime error
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the output of the following Java code snippet?
public class Main {public static void main(String[] args) {
int x = 5;
System.out.println(x++); // Post-increment
}
}
a) 5
b) 6
c) Compilation error
d) Runtime error
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which keyword is used to define a constant in Java?
a) constant
b) final
c) static
d) const
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