Crystal Sheldon
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Crystal Sheldon
@crystal-l-sheldon.bsky.social
25 followers 48 following 73 posts
Supporter of Computer Science Education with a focus on Java.
Check out free Java resources here: Learn.java
My posts are my own.
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crystal-l-sheldon.bsky.social
Do you know how to access record components? Test yourself here:

Learn more: learn.java/learning/tut...

#learnjava #teachjava #java
September 9, 2025 at 8:09 PM
crystal-l-sheldon.bsky.social
This week has been all about input and output. Let's test your knowledge of formatting output.

Learn more: learn.java/learning/tut...

#learnjava #teachjava #java
September 4, 2025 at 2:10 PM
crystal-l-sheldon.bsky.social
More on the IO class and the types of methods it has to offer. Check your knowledge with this quiz, then learn more: learn.java/learning/tut...

#learnjava #teachjava #java
September 3, 2025 at 1:29 PM
crystal-l-sheldon.bsky.social
So excited for the IO class current in preview in Java 24, but will be a part of the language with Java 25. Do you know about it and how it works? Test yourself.

Learn more: learn.java/learning/tut...

#learnjava #teachjava #java #inputoutput #java25
September 2, 2025 at 7:08 PM
crystal-l-sheldon.bsky.social
Sometimes we want to convert the data type for a value. Do you know how to do this in Java?

Learn more: learn.java/learning/tut...

#learnjava #teachjava #java
August 28, 2025 at 12:24 PM
crystal-l-sheldon.bsky.social
Continuing our arithmetic expressions series this week with some compound operators. See how you do.

Learn more: learn.java/learning/tut...

#Learnjava #teachjava #java #javaprogramming
August 27, 2025 at 4:41 PM
crystal-l-sheldon.bsky.social
Now that we have created some variables, let's see what we can do with arithmetic expressions. Quiz yourself!

Learn more: learn.java/learning/tut...

#learnjava #teachjava #java #javaprogramming
August 26, 2025 at 5:42 PM
crystal-l-sheldon.bsky.social
Do you know how to create a record object? Test yourself with today's quiz.

Learn more: learn.java/learning/tut...

#learnjava #teachjava #java #javaprogramming
August 21, 2025 at 11:30 AM
crystal-l-sheldon.bsky.social
Do you know the format to creating a new type using a record? Test yourself here.

Learn more: learn.java/learning/tut...

#learnjava #teachjava #java #javaprogramming
August 20, 2025 at 1:49 PM
crystal-l-sheldon.bsky.social
Happy Monday... Check what you know about boolean variables in this quiz.
Learn more: learn.java/learning/tut...

#learnjava #teachjava #java
August 18, 2025 at 4:17 PM
crystal-l-sheldon.bsky.social
Check your knowledge of declaring variables with this quiz.

Learn more: learn.java/learning/tut...

#java #learnjava #teachjava #javaprogramming #beginningprogramming #introtoCS
#beginningprogrammer #variables #datatypes #beginningprogrammingwithjava
August 15, 2025 at 11:31 AM
crystal-l-sheldon.bsky.social
Do you know the rules around creating variables? Test yourself by trying this quiz.

Learn more here: learn.java/learning/tut...

#java #learnjava #teachjava #javaprogramming #javaprogrammer #beginningprogrammer #beginningprogramming #beginningprogrammingwithjava #introtocs #apcsa
August 14, 2025 at 3:30 PM
crystal-l-sheldon.bsky.social
Today's Quiz in for introduction to data types.

Learn more here: learn.java/learning/tut...

#learnjava #teachjava #java
August 13, 2025 at 12:57 PM
crystal-l-sheldon.bsky.social
Algorithms Quiz 3 - This one is on iteration in an algorithm.

I hope this has been the best first week of school!

Learn more here: learn.java/learning/tut...

#apcsa #learnjava #teachjava #Java
August 7, 2025 at 12:23 PM
crystal-l-sheldon.bsky.social
Here's your daily #apcsa quiz #2. There is a new focus on algorithms in the course and exam description. Hope this helps.

Learn more: learn.java/learning/tut...

#learnjava #teachjava #javaprogramming #Java #dailyquiz #algorithms
August 6, 2025 at 12:06 PM
crystal-l-sheldon.bsky.social
Happy Back to School!! #apcsa students and teachers, here's your daily quiz on algorithms!

Learn more here: learn.java/learning/tut...

#learnjava #teachjava #introtoCS #javaprogramming #java
August 4, 2025 at 2:21 PM
crystal-l-sheldon.bsky.social
Trace through nested loops with us. Check out more here: learn.java/learning/tut...

#java #javaprogramming #learnjava #teachjava #apcsa #beginningprogramming #beginningprogrammingwithjava #introtocomputerscience
#whileloops #nestedloops
August 1, 2025 at 3:23 PM
crystal-l-sheldon.bsky.social
By request --- the #compareTo method of the #String class. This is how I would help students analyze code using this method. Here is a link to the full String tutorial: learn.java/learning/tut...

#learnjava #teachjava #apcsa #java #javaprogramming
July 29, 2025 at 2:49 PM