i SIMPLY DON\'T UNDERSTAND WHAT I AM SUPPOSED TO DO, PLEASE EXPLAINIF YOU CAN HE

Question

i SIMPLY DON'T UNDERSTAND WHAT I AM SUPPOSED TO DO, PLEASE EXPLAINIF YOU CAN HELP ME OUT!

1. Implement (i.e., write the body of) the following method,countLines, that, given a String parameter, thename of a file, counts and returns the number of lines of text inthe corresponding file.

    public static int countLines(String fileName) throws IOException
   
   
   

     2. Implement a newversion of the countLines method that catches the possibleIOException exception and outputs an error messageif such an exception is raised.

 public static int countLines(String fileName)

     2. Implement a newversion of the countLines method that catches the possibleIOException exception and outputs an error messageif such an exception is raised.

 public static int countLines(String fileName)

 public static int countLines(String fileName)

Explanation / Answer

1. public static int countLine(String fileName) throw IOException{ Scanner inputFile = new Scanner("filename.txt"); int counter = 0; while(inputFile.hasNext()){           inputFile.nextLine(); //eats the whole line           counter++; //increments line counter } inputFile.close(); return counter; } 2. Same concept but surround with try/catch public static int countLine(String fileName) { try { Scanner inputFile = new Scanner("filename.txt"); int counter = 0; while(inputFile.hasNext()){           inputFile.nextLine(); //eats the whole line           counter++; //increments line counter } inputFile.close(); return counter; } catch(IOException e){          e.printStackTrace(); } }

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