JDK Source Reading Notes Java Collection Framework (a) (basic)

Combined with "JDK source code" and "Thinking in Java", the Java Collection framework to do some brief analysis (in the spirit of pragmatism, simplification, it will only pick out the part that is considered to be the climax).

Let's start with a schematic diagram of the Java Collection framework:

　　

will be analyzed in the following ways:

1. Java array;
2. Arraylist,linkedlist and vectors;
3. HashMap;
4. HashSet

About Arrays Array:

The array is interpreted as storing the same type elements of a fixed size. Because it is a "fixed size", the storage of the unknown object element seems to be inadequate, hence the set.

　　

　

JDK Source Reading Notes Java Collection Framework (a) (basic)