In java please

you will be taking the $.$java file I have provided and will be implementing the three methods I have setup for you. Part One: Method $1$: public static String$[]$ convertFileToArray$($String fileName$)$ This method should convert the contents of the file into an array of words. Example: Say the file contains the following content $$This is a file containing text, and &$.$ It becomes $\{$this$,$ is$,$ a$,$ file, containing,text,, and, &$.\}$ Essentially just take every sequence separated by spaces and make it an element of an array. The length of the array is equal to the total number of words. $($I$$d use the String split function$)$ Method $2$: public static int countString$($String$[]$ array, String word$)$ This method should calculate the amount of a given word in an array. Example: Say you have an array containing the following content $\{$This$,$ string, contains, the, word, the$\}$ And I call it with the word $$The$$ This would return $2$ Method $3$: public static int$[]$ getPositions$($String$[]$ array, String word$)$ This method will return an array that indicates all the positions of word in the array

this is the code given

public static String$[]$ convertFileToArray$($String fileName$)$ throws FileNotFoundException$\{$ return null; $\}$ public static int countString$($String$[]$ array, String word$)\{$ return $0$; $\}$ public static int$[]$ getPositions$($String$[]$ array, String word$)\{$ return null; $\}$ public static void main$($String$[]$ args$)$ throws FileNotFoundException $\{//$TEST $1$ String$[]$ file$1=$ convertFileToArray$("$File$1.$txt$")$; int countTheFile$1=$ countString$($file$1,$ "the"$)$; int$[]$ file$1$ThePositions $=$ getPositions$($file$1,$ "the"$)$; System.out.println$($countTheFile$1)$; for$($int pos: file$1$ThePositions$)\{$ System.out.println$($pos$)$; $\}//$TEST $2$ int countForFile$1=$ countString$($file$1,$ "for"$)$; int$[]$ file$1$ForPositions $=$ getPositions$($file$1,$ "for"$)$; System.out.println$($countForFile$1)$; for$($int pos: file$1$ForPositions$)\{$ System.out.println$($pos$)$; $\}//$TEST $3$ String$[]$ file$2=$ convertFileToArray$("$File$2.$txt$")$; int countRoadsFile$2=$ countString$($file$2,$ "roads"$)$; int$[]$ file$2$RoadsPositions $=$ getPositions$($file$2,$ "roads"$)$; System.out.println$($countRoadsFile$2)$; for$($int pos: file$2$RoadsPositions$)\{$ System.out.println$($pos$)$; $\}//$TEST $4$ int countSheFile$2=$ countString$($file$2,$ "she"$)$; int$[]$ file$2$ShePositions $=$ getPositions$($file$1,$ "she"$)$; System.out.println$($countSheFile$2)$; for$($int pos: file$2$ShePositions$)\{$ System.out.println$($pos$)$; $\}/*$EXPECTED RESULTS $61422263147$ END OF TEST $13102146$ END OF TEST $21026437289126143145162168174$ END OF TEST $37337990113118133152$ END OF TEST $4*/\}\}$