dentify the VALID lambda expressions:a)(int i) -> i;b)(int i) -> i++; return i;c)String a, String b -> System.out.print(a+ b);d)() -> return;e)return i
Question
dentify the VALID lambda expressions:a)(int i) -> i;b)(int i) -> i++; return i;c)String a, String b -> System.out.print(a+ b);d)() -> return;e)return i
Solution
The valid lambda expressions from the given options are:
a) (int i) -> i; This is a valid lambda expression. It takes an integer as input and returns the same integer.
d) () -> return; This is a valid lambda expression. It takes no input and doesn't return anything.
The other options are not valid lambda expressions:
b) (int i) -> i++; return i; This is not valid because lambda expressions in Java do not support statements, only expressions. The "return" keyword is not needed and not allowed in lambda expressions.
c) String a, String b -> System.out.print(a+ b); This is not valid because the parameter types (String a, String b) should be enclosed in parentheses.
e) return i This is not valid because it's missing the input parameters and the arrow (->). A correct version could be something like (int i) -> i;
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