---
type: archive
area: archive
status: archived
date: 2026-05-03
created: 2026-05-03
updated: 1980-01-01
tags:
  - archive
---
- double... values 
by using this the function can accept an undefined number or parameters
- Reusing Constructors:
![[img-20240803-235753-c6bb1358.png]]
- Immutability means that the class don't have setters values to fields are passed only in initialization.
- Instance initializer a bloc of code executed on every initialization of this object
- Enums are implicitly public, static and finals.
- Every Enum have an ordinal and a name like this example 
``` java
public enum Contdition {
	HOT, COLD, WARM
//ordinals 0,1,2
}
```