4 views
23 Jan 2026
Task: divide a by b and throw ArithmeticException when b is 0....
6 views
23 Jan 2026
Task: if x is negative, throw IllegalArgumentException. Else return x....
7 views
23 Jan 2026
Task: parse integer from string; if invalid, return fallback value....
5 views
23 Jan 2026
Task: return a[index] if valid else throw IndexOutOfBoundsException....
4 views
23 Jan 2026
Task: if obj is null throw NullPointerException else return it....
5 views
23 Jan 2026
Task: show a method that closes a Closeable safely in finally without hiding original exception....
4 views
23 Jan 2026
Task: create a custom exception InsufficientBalanceException and throw it when withdraw > balance....
5 views
23 Jan 2026
Task: age must be 1..120. If not, throw IllegalArgumentException....
6 views
23 Jan 2026
Task: wrap IOException into RuntimeException and rethrow....
7 views
23 Jan 2026
Task: validate (nameLength > 0) and (score between 0..100). Throw IllegalArgumentException if any fails....
5 views
23 Jan 2026
Task: update two array positions. If any index is invalid, keep array unchanged and throw exception....
7 views
23 Jan 2026
Task: call a risky operation and retry up to 3 times on exception. If still fails, throw last exception....
8 views
23 Jan 2026
Task: if array is not sorted, throw IllegalStateException. Else return true....
7 views
23 Jan 2026
Task: wrap exception with cause and rethrow as RuntimeException keeping original cause....
5 views
23 Jan 2026
Task: simulate primary exception and also close exception; ensure primary is thrown....
