Java Heap Space vs Stack - Memory Allocation in Java - JournalDev https://www.journaldev.com/4098/java-heap-space-vs-stack-memory#:~:text=Difference%20between%20Java%20Heap%20Space%20and%20Stack%20Memory&text=Heap%20memory%20is%20used%20by,contains%20the%20reference%20to%20it.. Dependency Inversion vs. Dependency Injection | by Guy Erez | Better Programming https://medium.com/better-programming/straightforward-simple-dependency-inversion-vs-dependency-injection-7d8c0d0ed28e. Core Java Interview Questions - HowToDoInJava https://howtodoinjava.com/interview-questions/core-java-interview-questions/