Java Programming Beginner Quiz 5
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Beginner Quiz 5
1. How do you round 2.8 to the nearest whole number?
Math.round(2.8)
round(2.8)
int(2.8)
2. What is the output of System.out.println(4 / 2);?
2
2.0
4
3. How do you add a new item to an ArrayList arr?
arr.add(x)
arr.append(x)
arr.push(x)
4. What does break do in a loop?
Stops the loop
Skips one step
Restarts the loop
5. Which is a correct else if statement in Java?
else if (x == 2) { }
elif (x == 2):
elseif x == 2:
6. How do you get the smallest number in an array arr?
Use a loop or Arrays.sort()
smallest(arr)
arr.min()
7. How do you join an array of Strings into a single String with spaces?
String.join(" ", arr)
arr.join(" ")
join(arr, " ")
8. How do you exit a program early in Java?
System.exit(0);
exit()
end()
9. How do you import all classes from java.util package?
import java.util.*;
include java.util;
use java.util
10. What does public static void mean in main method?
Accessible from anywhere, belongs to class, returns nothing
Private method that returns void
Static variable declaration
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