Devlog - 2025年09月15日

🚀 What I Did

• Learned Arrays.

🧠 What I Learned

Arrays

• Collections of elements of the same type stored in contiguous memory.
• Fixed size (cannot grow/shrink once created).

Enhanced For-Loops

• Also called "for-each loop".
• Introduced in Java 5.
• It’s a shorter, cleaner way to loop through arrays or collections.

for (datatype variable : collection) {
 // use variable
}

• datatype → type of elements (e.g., int, String, double)
• variable → temporary name for each element
• collection → array or a class implementing Iterable (like ArrayList, HashSet)

🔥 What’s Next

• Further practicing arrays.
• Strings
• Some coding related to the above topics.