Skip to content
</>
CodingGyan
Topics
About
Search problems
☾
Home
/
JVM, Memory and Performance
⚙️
JVM, Memory and Performance
Memory, garbage collection and performance. 13 problems · Advanced level.
All
Easy
Medium
Hard
13 problems
Memory
✓
Pass by Value Demo
easy
✓
String Immutability Demo
easy
Garbage collection
✓
Mark and Sweep: Find the Garbage
medium
✓
Generational GC: Promotion to Old Space
medium
✓
Reference Counting Garbage Collector
hard
Class loading
✓
Class Initialization Order
medium
✓
Class Loader Parent Delegation
medium
Performance
✓
Build a Long String: Concatenation vs StringBuilder
medium
memory and collections
✓
ArrayList Capacity Growth
medium
boxing
✓
Integer Cache: == versus equals
medium
string pool
✓
String Pool and intern()
medium
hashing
✓
Java String hashCode
medium
✓
HashMap Bucket Index
medium