Suppose you have Java source files under the directories chapter1, chapter2, . . . , chapter34. Write a program to insert the statement package chapteri; as the first line for each Java source file under the directory chapteri. Suppose chapter1, chapter2, . . . , chapter34 are under the root directory srcRootDirectory. The root directory and chapteri directory may contain other folders and files. Use the following command to run the program:

java Exercise12_18 srcRootDirectory