this & toString/equals/hashCode
Use this to refer to the current object, write helpful toString, and implement equals and hashCode correctly.
The this keyword
this refers to the current object. Use it to access fields or call another constructor. It helps when parameter names are the same as field names, making your intention clear.
Readable toString
toString() returns a human friendly summary of an object. Override it to show key fields like id and name. This makes logs and debug prints much easier to understand.
All lessons in this course
- this & toString/equals/hashCode
- Object Composition
- Modeling a Domain (UML→Code)