I am trying to write a code to remove comment lines from the input java file.
I am getting an error -Exception in thread "main" java.lang.NullPointerException.
Whats wrong in the code. It is showing error- Exception in thread "main" java.lang.NullPointerException in- return new String(buffer),, and the word "String" everywhere present in the program.....
After removing some nodes from the document ,i am getting empty lines in place of removed nodes,how to resolve this and get the proper xml document without any errors...
How to avoid empty lines in the xml doucment output. This is the method i am using to get the result
public void ValidateRecord(String xml){ try{ DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder db = factory.newDocumentBuilder(); //parse file into DOM /*DOMParser parser = new DOMParser(); parser.setErrorStream(System.err);
a. Assume that we have a list of employees' names of a company and their ages. Write a program that reads from the user several lines of input. Each line includes an employee's name and his/her age (as an integer). The program should calculate and print the following:
- The average age of all employees (rounded to 2 decimal places). - The oldest employee and his/her age.
Hints:
You could assume that the user will insert valid data and at least one employee. You could assume that the oldest employee is only one person. User could stop the program via entering the word "end" as an employee's name.
Sample Input and Output: In each line, insert an employee's name and his/her age To halt the program, insert "end" as an employee's name
Adam 30 Tom 41 Ted 45 Karl 30 end
The average age of all employees is 36.50.The oldest employee is Hisham whose age is 45
class CreateFile implements ActionListener{ // MailOrderCreateFile.java @Override public void actionPerformed(ActionEvent ae){ String getDestination = txtDestination.getText(); file = new File(getDestination); // needed for Creating and Displaying the file currentTime = txtCurrentTime.getText(); try { FileWriter fw = new FileWriter(file);
[Code]...
What I wanted to do is that every time I press the button that will activate this part of the code, it will write to a .txt file defined in my txtDestination var (a JTextField). After the first time the file was created, it must append a new line every succeeding presses. However, everytime I do this, it just simply overwrites the contents of the .txt file. The example output would have been like this:
First time.
O R D E R D E T A I L S: Time ordered: 01/21/2015 Wed 10:21:54 PM Item number: 10 Item price: $4.59 Quantity ordered: 12,321 Total: $56,553.39
I have a text file with the below details and we get the input as name CONNECTION_PORT and we need to delete the matching global variable which as CONNECTION_PORT and keep the remaining global variable in file without using any temp files.
What would i have to do to insert a a piece of text in between hello and bye? I would like for the it to search for "hello", then add a line after it so it would look like :
------- hello newtext bye -------
I have these 2 methods that work as intended, but i just cannot seem to do what i've stated above.
Java Code: /** * @param location * Location of the .txt file. * @param text * The String to search for in the .txt file.
Me and my mate are struggling to get our code to split a line in a text file which are separated by (":") and store into an array. We've managed to split each individual line into an array, but cannot work out how to do it with multiple splits over one line.
I am trying to write a java code for a homework problem in my intro java class but im having problems. This is the problem:
Write a program that open the MyFile.txt and read from a file with these criteria.
1)-The program should display the first five lines of the file’s contents only.
2)-If the file contains less than five lines, it should display the file’s entire content. You must check for end of file and less than 6 lines on the loop iterations.
3)- your program should use loop to read the line by line of the file MyFile.txt.
The serperate myfile.txt has this
I can still remember, at the end of that year, we sat for the last time in our circle together. She played us her favorite song, "like a bridge over troubled water" and quietly passed out a gift she had made for each of us.She had made each of us a pottery heart with our name and the date on it on the back each read "I believe in ME".We all cried including her. She told us she would always remember US. We believed she would.
and this is what the code is suppose to look like after you run it : Java33.png
And this is what i have so far : Java22.png
what needs to go next to complete the javascript to show the first 5 lines of the text files?
I can't seem to understand how to change certain line of text, inputted from a file. For this I really don't know where to begin. I have got the input from the file. But I want to change like very other line in the file. Can't seem to understand how this could be done. Is there away to access specific lines from the file and edit them? So far, i have this:
import java.util.*; import java.io.*; public class ChangeEveryOtherLine { public static void main(String[] args){ //Constructing file object representing input file File inputFile = new File("input.txt");
I am writing to a file coordinates of texts using PathIterator (Java Platform SE 7 ) saved as SVG format i defined the Font attributes using AttributedString (Java Platform SE 7 ) and TextLayout (Java Platform SE 8 ). It is saving to the file and working properly, but it is just writing as a single line of text where is my target is multiple lines of text, i began using LineBreakMeasurer (Java Platform SE 7 ) Class, but some text is removed plus i got single line of text only, where i face the problem that , How to determine the width to get multiple lines of text ? i tried to figure out from this exampleDrawing Multiple Lines of Text (The Java - Tutorials > 2D Graphics > Working with Text APIs) where is drawing multiple lines of text but i am using getBounds().getWidth() of TextLayout object the code i tried
Is there anyway to format my input file "IF1.txt" into an excel/csv file, but with the content rearranged into a desired format? (all of this has to be done by a java program)
Logic her eis when user selects option1, it asks for user to enter name and as soon as user enters name, it should compar name to existing names in txt file. I have user while loop and for loop but for some reason, it doesnt compare properly as there seems to be some mistake in looping and it just read first line or you can say single line rather than comparing it with all lines in txt file. i have attached votes.txt file with this. Also, if user doesnt exists infile, it will ask user to enter vote as yes or no and add it to file and then count total number of Yes and No votes from file and compare them.
my votes.txt file looks as below with two columns namely (name and vote).
Hiren No samir yes bob no rikul no master yes patrick no summer yes bhanja no
For example, if I had a text file with one line such as "first, second, third", would there be a way to make it so I could make "first" go to the first array list, "second" to the second, and "third" to the third?
I haven't posted any of my code so far as it wouldn't be right to be handed the finished code on a platter and I should put the work into it, but I'd just need a loop to make it go through the rest of the lines in the text file to add all the first, second and third parts of each line, right?
(I already know how to input data from a file, but not how to split up a line into bits to put into different array lists).
tab separated values, for different columns and these are the lines only I want method to read.Now suppose if any is there as below, or even enter
12-01-0113:26San Jose12.99DVD 12-12-3009:40Miami13.50Music 14-08-3010:20Arizona16.03Scientist 11-07-1009:10New York25.00ColdPlay 14-08-3010:20Arizona18.04MeetYou [new lines] 14-08-3010:20Arizona50.03Scientist 11-07-1009:30New York25.00ColdPlay //This line should not be read even this should not be read #$%^& 11-07-1009:20New York25.00ColdPlay
That particular line should be escaped. Till now I have done when the file format is proper, and it is as below:--
public static void main(String[] args) { BufferedReader br = null; String temp = null; List<String> arrayRead = new ArrayList<String>(); try{ br = new BufferedReader(new FileReader("D: estingSalesData.txt"));
I am trying to read Point objects from square.drw file which contains endpoints of line segments, and draw lines making a square on panel when I run the program. This is what I have got so far. How to get the points using array for drawing ?
I have a program that reads lines of text, but some of the lines of text aren't applicable and break the program. I'd like to put a letter in front of the lines in the .txt file I want to use, such as a #.
I need to make an if loop that'll check for the first letter on the line being #, and use the line in the program if true and skip if false. I'm guessing a boolean variable would be useful here to be true or false depending on the presence of #, but I don't know how to only read the first letter of each line, how can I do this?
I am trying to read Point objects from .drw file which contains endpoints of line segments, and draw lines making a square on panel when I run the program. This is what I have got so far. how to get the points using array for drawing ?
// inside the method to read points objects from .drw file try { fos = new FileInputStream("square.drw"); oos = new ObjectInputStream(fos); // creating an object of Point class endPoints = new Point[sampleSize];
I have created an application using hibernate and struts.In which a form is created where the user will enter all its personal details(for e.g name ,phone no. and address).
Here for address I have used textarea and whenever user enters the address, sometimes it can be a long string also.
So the problem is if a long string is entered then while displaying that ,address comes on single line and the page is stretched.
how to break this single string into mutiple lines in java class?
I need to retrieve all Line Strings from a Geometrical Collection(of line strings) lying between two coordinates (Coordinates are taken from existing Line Strings in the Geometrical Collection).
I am using JTS library. I tried intersection() function but it worked only for linear geometries not for curved. How to get the output in the most efficient way.
I was trying to create a java program which can remove the repeated characters in a String. For ex-
Input: kamehamehaaa Output: kameh
Here is my code:-
import java.util.Scanner; class replace { public static void main (String args[]) { Scanner br = new Scanner(System.in); System.out.println("Enter a word");
[Code] ....
On executing the program, StringOutOfBoundsIndex error occurs.
So I was going to try to create a program that prompts input and creates a file (That didn't exist before) with that input as name.Then, the program prompts inputs after stating questions such as 1 + 1, then if the user inputs an answer, put "Question # = Correct "or" Wrong.Code SO Far:
Java Code:
import java.io.BufferedReader; import java.io.File; import java.io.InputStreamReader; public class File_Read { public File_Read() {//File_Read is the Interactive object
[code]....
So that it puts the Correct or Wrong into the file.
class A { List<StringBuilder> list; public void output(List<StringBuilder> objectToOutput){ try(BufferedWriter bw = new BufferedWriter(new FileWriter("temp.txt"))){ for(StringBuilder row:objectToOutput) bw.write(row.toString()); }catch(IOException e){}
[code]....
Why don't the a's show up on the console? I put them in as part of the debugging process and now I don't understand why they don't show up in both places.
