Given the code fragment: String str = "Java is a programming language"; ToIntFunction<String> indexVal = str: : indexOf;//line n1 int x = indexVal.applyAsInt("Java");//line n2 System.out.println(x); What is the result?
Click on the arrows to vote for the correct answer
A. B. C. D.A.
The code fragment declares a String variable str and initializes it with the value "Java is a programming language". It then declares a ToIntFunction<String> variable indexVal and initializes it with a method reference to the indexOf method of the str object using the double colon (::) operator. The indexOf method is used to find the index of the first occurrence of the specified substring in the given string.
The indexVal function takes a String argument and returns its index in the str object, or -1 if it is not found.
The code then declares an int variable x and initializes it by invoking the applyAsInt method on the indexVal function, passing in the String "Java" as the argument. This will search for the index of the substring "Java" in the str object using the indexOf method.
Finally, the code prints the value of x to the console.
Since "Java" is present at index 0 in the str object, the output of the code will be 0, and the correct answer is A.
Therefore, the correct answer is A.