A record is a special Java class designed to hold immutable data with minimal boilerplate.

A record automatically generats:

• constructor
• getters (x() instead of getX())
• equals()
• hashCode()
• toString()

A record is implicitly:

• final
• immutable
• transparent(data-centric)

Java 21 introduces record deconstruction patterns. This lets you extract data directly inside:

• if
• switch
• enhanced switch expressions
• method parameters

Record patterns allow:

• Deconstruction of immutable data
• Pattern matching on structured objects