Java Flashcards
Learn java
1
Q
When would one use a query parameter over a stashed field (stashed in the header)?
A
When one wants to allow for a value of 0. Stashed parameters do not allow that.
2
Q
What is the entry point of a java class?
A
public static void main(String[] args)
3
Q
What’s the syntax to create a Set of the numbers 1, 2, 3?
A
Set<Integer> set = Set.of(1, 2, 3)</Integer>
4
Q
A
5
Q
What are access modifiers, and what are they in Java?
A
Control which other classes can access a particular area of code.
Private, public, protected, and default.
6
Q
What is this syntax? MyObject<K,V>?
A
Generics.
7
Q
Syntax to create an error when a bad input is found.
A
throw new IllegalArgumentException(“new error”)
8
Q
What’s the difference between raise and throw?
A
Raise is for python, throw is for java.
