LocalDate,LocalTime and LocalDateTime are immutable ojects. Hence if we are trying to modify the content, then a new object will be created and in the existing object there are no changes.

At Line-1, all references t1,t2 and t3 are pointing to the same object and remaining two objects are eligible for Garbage Collection.

Inside try ArithmeticException raised and hence catch block will be executed. But within the catch block NullPointerException will be raised, which is uncaught. Hence the program will be terminated abnormally. But before abnormal termination, only finally block will be executed. Hence the output is: ABCD followed by NullPointerException

45 is invalid value for Date and hence we will get runtime exception saying: DateTimeException

Exception in thread "main" java.time.DateTimeException: Invalid value for DayOfMonth (valid values 1- 28/31): 45

substring(begin,end) returns the substring from begin index to end-1 index. After applying substring() method multiple times, the final content of the String is : 8Ce

Inside a method if there is a chance of raising checked exception, then compulsory we should handle either by try-catch or by throws keyword. We have to handle or throws either same exception or its parent, otherwise we will get compile time error. But no restrictions on unchecked exceptions.

After add elements, list will become [1,2,3]. l.remove(2); will remove the element locating at 2 index. Hence 3 will be removed.

After performing all operations the content of list is : [C]. Hence output is : C1

Predicate will check whether the given number is >0 or not. Hence the output is : 1030

sb.deleteCharAt(0);===>it deletes 'd' and now content is "urga" sb.delete(1,3);===>delete characters from index 1 to 2. Hence "rg" will be deleted. Hence the output is: ua