try
{
Scanner file = new Scanner(new File(“data.txt”));
int n = 0;
while (file.hasNext())
{
String s = file.nextLine();
if (s.equals(“A”))
n++;
}
System.out.println(“The value of n is “ +n);
file.close();
}
catch(IOException ioe)
{
ioe.printStackTrace();
}
Given code counts the number of lines in data.txt that are only "A" Then it prints that count. In other words, this code prints number of lines in data.txt that are "A" Example: if data.txt contains below line this is A text file A A yes Then this code prints "The value of n is 3"
What is the output of the following code? try { Scanner file = new Scanner(new File(“data.txt”));...
How to write a Java file out that that reads from numbers.txt with these numbers 2 6 7 9 5 4 3 8 0 1 6 8 2 3 and write to a file called totalSum.txt that looks like: 2+6+7+9=24 and so on using this code import java.io.*; import java.util.Scanner; public class FileScanner { public static void main(String[] args) { /* For Homework! Tokens*/ Scanner file = null; PrintWriter fout= null; ...
Modify your program in Lab Assignment 4A to throw an exception if the file does not exist. An error message should result. Use the same file name in your program as 4A, however, use the new input file in 4B assignment dropbox. My code: import java.io.*; import java.util.*; public class Lab4B { public static void main(String[] args) throws IOException { final String input_file = "Lab_4A.txt"; final String output_file = "Lab_4A.txt"; Scanner x = null; FileWriter y = null; try {...
I am told to create a fillArray method that will read integers from the file "data.txt" and store them in the array. I'm told to assume that the file has no more than 100 items in it. This is what I have so far: public void fillArray() { int curVal; Scanner input = null; try { input = new Scanner(new File("data.txt")); // set the current number of items in the array to zero while (input.hasNextInt()) { curVal = input.nextInt();...
The following code uses a Scanner object to read a text file called dogYears.txt. Notice that each line of this file contains a dog's name followed by an age. The program then outputs this data to the console. The output looks like this: Tippy 2 Rex 7 Desdemona 5 1. Your task is to use the Scanner methods that will initialize the variables name1, name2, name3, age1, age2, age3 so that the execution of the three println statements below will...
JAVA: Rewrite the following code to where the inputs are from a file. The file name will be from the input from the user scanner. CODE: import java.util.*; public class Q1 { public static int sumOD (int k) { int sumOD = 0; int in = k; while (in != 0) { int digitON = in % 10; sumOD += digitON; in /= 10; } return sumOD; } public static void main(String[] args) { int n, i, k; System.out.println("Enter...
Problem: Use the code I have provided to start writing a program that accepts a large file as input (given to you) and takes all of these numbers and enters them into an array. Once all of the numbers are in your array your job is to sort them. You must use either the insertion or selection sort to accomplish this. Input: Each line of input will be one item to be added to your array. Output: Your output will...
Trying to practice this assignment Argument list: the *yahoonews.txt Data file: yahoonews.txt Write a program named WordCount.java, in this program, implement two static methods as specified below: public static int countWord(Sting word, String str) this method counts the number of occurrence of the word in the String (str) public static int countWord(String word, File file) This method counts the number of occurrence of the word in the file. Ignore case in the word. Possible punctuation and symbals in the file...
(Java) Rewrite the following exercise below to read inputs from a file and write the output of your program in a text file. Ask the user to enter the input filename. Use try-catch when reading the file. Ask the user to enter a text file name to write the output in it. You may use the try-with-resources syntax. An example to get an idea but you need to have your own design: try ( // Create input files Scanner input...
Write the output that would be producded by the following code: public static void printStrings(Scanner input) { while (input.hasNextInt()) { int times = input.nextInt(); String word = input.next(); for (int i = 0; i < times; i++) { System.out.print(word); } System.out.println(); } } The input file has the following lines: If this method works properly, the lines of text in this file will be reversed. Remember that some lines might be blank.
composed the following java code to read a string from a text file but receiving compiling errors. The text file is MyNumData.txt. Included the original java script that generated the output file. Shown also in the required output results after running the java program. I can't seem to search for the string and output the results. Any assistance will be greatly appreciated. import java.io.BufferedReader; import java.io.FileReader; import java.util.ArrayList; public class Main { public static void main(String[] args) { System.out.print("Enter the...