Top 8 Diagrams for Understanding Java

A diagram is sometimes worth 1000 words. The following diagrams are from Java
tutorials on Program Creek, they have received the most votes so far. Hopefully, they can help you review what you already know. If the problem is not clear by the diagram itself, you may want to go to each article to take a further took.1. String
ImmutabilityThe following diagram shows what happens for the following code:2. The
equals() and hashCode() ContractHashCode is designed to improve performance. The contract between equals() and hasCode() is that:1. If two objects are equal, then they must have the same hash code.2. If two objects have the same hashcode, they may or may not be equal.3. Java
Exception Class HierarchyRed colored are checked exceptions which must either be caught or declared in the method’s throws clause.4. Collections
Class HierarchyNote the difference between Collections and Collection.5. Java
synchronizationJava synchronization mechanism can be illustrated by an analogy to a building.6. AliasingAliasing means there are multiple aliases to a location that can be updated, and these aliases have different types.7. Stack
and HeapThis diagram shows where methods and objects are in run-time memory.8. JVM
Run-Time Data AreasThis diagram shows overall JVM run-time data areas.------------------------------------------------