Java does allow you to work with unsigned types efficiently (look at the methods with unsigned in their names in the Integer or Long classes: https://docs.oracl

Java does allow you to work with unsigned types efficiently (look at the methods with unsigned in their names in the Integer or Long classes: https://docs.oracle.com/en/java/javase/19/docs/api/java.base/java/lang/Integer.html https://docs.oracle.com/en/java/javase/19/docs/api/java.base...). But those uses are relatively specialised and the vast majority of Java users don't need that. So it's best to keep them as APIs rather than in the core language.