The ______________ operator accesses a property or calls a method only if the operator’s left operand is not null.
Fill in the blank(s) with the appropriate word(s).
?. null conditional operator.
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_____________________ are effective for functions that have a time lag built into them.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is false?
a. You filter elements to produce a stream of intermediate results that match a predicate. b. IntStream method filter receives an object that implements the IntPredicate functional interface (package java.util.function). c. IntStream method sorted (a lazy operation) orders the elements of the stream into ascending order by default. All prior intermediate operations in the stream pipeline must be complete so that method sorted knows which elements to sort. d. Method filter is a stateless intermediate operation—it requires information about other elements in the stream in order to test whether the current element satisfies the predicate.
The data type returned from a string-building function is:
a. char b. char * c. string d. string * e. none of the above
What is a transaction. Give an example of a transaction.
What will be an ideal response?