Which of these methods deletes all the elements from invoking collection?
Anonymous Quiz
52%
clear
16%
reset
30%
delete
3%
refresh
❤4
Which keyword is used to exit a loop prematurely?
Anonymous Quiz
72%
break
8%
continue
18%
exit
3%
revert
🔥3
What happens if the loop condition of a for loop is never true?
Anonymous Quiz
47%
The loop body is skipped entirely
31%
An infinite loop occurs
17%
An exception is thrown
5%
The program crashes
👍2
Which of the following statements about threading in Java is true?
Anonymous Quiz
71%
Threading allows a program to perform multiple tasks simultaneously.
11%
Threading ensures that a program runs faster than single-threaded programs.
16%
Threading guarantees the sequential execution of tasks in the order they are created.
3%
Threading is only useful in graphical user interface (GUI) applications.
👍5
Can a for loop have multiple break conditions?
Anonymous Quiz
43%
yes
32%
no, only one is allowed
9%
Only if the loop has a default case
16%
Only if the loop is nested inside another loop
🔥2👍1
Can you write a program to find all numbers in a string ?
input "1 H211o W0r1d" output [1,211, 0, 1] ?
input "1 H211o W0r1d" output [1,211, 0, 1] ?
Anonymous Poll
66%
yes
21%
no
13%
please share video
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What is the purpose of the break keyword in a for loop?
Anonymous Quiz
69%
It terminates the loop immediately
14%
It skips the current iteration
14%
It moves to the next iteration
4%
It is optional and not required
👍6👏1
Forwarded from TechShiksha by Badkul Technology (spring boot and microservices admin)
Which of the following statements about Java interfaces is true?
Anonymous Quiz
15%
An interface can be instantiated using the new keyword.
19%
An interface can contain instance variables.
26%
An interface can have method implementations.
40%
An interface can extend multiple other interfaces.
Which of the following statements is true about checked and unchecked exceptions in Java?
Anonymous Quiz
68%
Checked exceptions are checked at compile-time, while unchecked exceptions are checked at runtime.
14%
Checked exceptions are checked at runtime, while unchecked exceptions are checked at compile-time.
11%
Checked exceptions and unchecked exceptions are both checked at compile-time.
7%
Checked exceptions and unchecked exceptions are both checked at runtime.
👍5
Which of the following is a new feature introduced in Java 17?
Anonymous Quiz
24%
records
20%
switch expression
38%
lambda expression
19%
Generics
👏7
What is the purpose of a while loop?
Anonymous Quiz
30%
To iterate over a collection of elements
7%
To declare variables in a program
58%
To execute a block of code multiple times
5%
To handle exceptions in a program
👍7