Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

throws clause

The part of a method header that lists checked exceptions it may let escape: void load() throws IOException.

Callers must catch or declare each listed checked exception; an override may declare the same, fewer or narrower checked exceptions, never broader ones.

Read the full section →