Writing Output Of Two Different Java Class Files To One Txt File While Program Runs
Jul 20, 2013
So I am trying to write the output of two different java class files to one txt file while the program runs. The file name is determined before the program is ran, through the command prompt as arguments. How can I get the second class file to edit the same txt file without running into compile errors.
For right now I'm just going to send everything that the second file outputs to a message String variable, so that the Main class outputs to the the text file. I still want to learn how to write to the same text file directly from the second class file.
import java.io.*;
public class Test{
public static void main(String[] args) throws IOException{
int x;
//create a new file internally called doc. But externally labelled the user input
File doc = new File(args[0]);
if (doc.exists()){
I have recently revisited a program I wrote a few years ago, that runs absolutely fine in the console in Eclipse. However, when I export it as a Runnable Jar File, then open the file on my Desktop, nothing happens.How do I get the program to export so that when I open the file, a window opens that acts as the console (so the program can run in it)?
have to create a file named Lab13.txt. In the file I have 10 random numbers. I have to import the 10 numbers and have to Multiply all the numbers from Lab13.txt by 10 and save all the new numbers a new file named Lab13_scale.txt. so if the number 10 is in lab13.txt it prints 100 to Lab13_scale.txt. how do i get it to Multiply Here is what I have:
In the program below I'm trying to read the contents of several .txt files in the same diretory and create a new .txt file containing all of the data from each file. My output is generated in the console however my .text file is blank.
public static void main(String[] args) throws IOException { String target_dir = "C:Files"; String output = "C:Filesoutput.txt"; File dir = new File(target_dir); File[] files = dir.listFiles();
User-defined classes. The concept of getters and setters goes right over my head. Right now we're to write a program to test the Person class below. We have to create 2 instances of the class to test each constructor, and test each method.
class Person { // Data Members private String name; // The name of this person private int age; // The age of this person private char gender; // The gender of this person // Default constructor public Person() { this("Not Given", 0, 'U');
[code]....
then my output will print out the name. But the assignment doesn't tell us to modify the Person class at all, just to create a tester one.
I have written a program (DOM Parser) that parses data from a XMl File. I would like to create an individual file with the corresponding name for each set of data parsed from the xml document. If the parsed output is Single, Double, Triple, I would like to create an individual xml file (Single.xml, Double.xml, Triple.xml)with those corresponding names. How do I create the xml files and give each file the name of my parsed data output?
I have written a program (DOM Parser) that parses data from a XMl File. I would like to create an individual file with the corresponding name for each set of data parsed from the xml document. If the parsed output is Single, Double, Triple, I would like to create an individual xml file (Single.xml, Double.xml, Triple.xml)with those corresponding names. How do I create the xml files and give each file the name of my parsed data output?
**Here is my question. I'm trying to use input and loop method to search for a file. The above code works but my problem is lets say I try to find 2 different text files**
1. billing-20140527[09].txt has
a)XGMS,2014-05-27 10:08:04,122,PLAYER_VERIFY,VERIFY to LBA,0x580000,0xC0000,253040. b)XGMS,2034-05-27 30:08:04,122,PLAYER_VERIFY,VERIFY to LBA,0x580000,0xC0000,253040.
2. billing-20140527[10].txt has
a)XCGS,2014-05-27 10:08:04,122,PLAYER_VERIFY,VERIFY to LBA,0x580000,0xC0000,253040. b)HELO
I try to find the number 1 in both text files, if lets say I input the text file name is billing, I can find the number 1 in both text file and output them:
a) XGMS,2014-05-27 10:08:04,122,PLAYER_VERIFY,VERIFY to LBA,0x580000,0xC0000,253040. B)/> XCGS,2014-05-27 10:08:04,122,PLAYER_VERIFY,VERIFY to LBA,0x580000,0xC0000,253040.
However, if I specify the text file name: billing-20140527[09].txt and find the number 1 inside the text file, it will only output:
a) XGMS,2014-05-27 10:08:04,122,PLAYER_VERIFY,VERIFY to LBA,0x580000,0xC0000,253040.
How can I do so? Because I can output the number 1 from both text files even though I specify the name.
I'm writing a program to dynamically update an xml file to add, delete, and edit entries in the file. I've run into an issue with the add method because when I write into the file, a random letter is added before the line. EX:
I want to add "<item> ..." to the end of the list of entries, but when it is added, this is what is added "Z <item> ..."The spacing for the <item> is correct, however, I don't see where or why the Z is added.
public static void insertItem(Item i) { try { String insert = " <item>"; String text = ""; Scanner in = new Scanner(file);
I need to convert a .txt file to html text, where the first line is changed to have < h1 > < /h1 > around it and the rest is wrapped in < p > < /p > so for example I read a .txt file that says:
chapter 1
this is a sentence
it would output:
<h1>chapter 1</h1>
<p>this is a sentence</p>
here is what I have so far and I cannot get anything to output.
I have a little application that I made, it requires that I save data to a file in data/coins.cdp. When I run the application with java myProg in the terminal everything is correct, when I create the executable jar and run java -jar myJar.jar or ./myjar.jar everything also works. Even if I copy the jar to a different location, and run it through the terminal, it still works fine. Things get weird through when I copy the jar to a new location and double click on it, because then no folder gets created and no file is written.
I'm doing this assignment in which i have to write some products in csv file...but as u can see in csv file two products are same "Cooking Oil"..so any method that can add two same product's quantity and their amount and write them in file
import java.util.*; import java.io.*; public class SalesbyTransactionMonth{ private static final String fileName = "Data.txt"; private static final String fileName1 = "sales_by_trans_month.csv"; String line = "";
My program successfully reads a file, reports back what it finds and creates an output file. However, I cannot get it to write to the output file, it is always blank!
Here's my code:
import java.util.Scanner; import java.io.*; public class Ex19 { public static void main (String [] args) { //Variables
I have copied a wav file as explained in [URL] ..... When trying to play my new file, it runs but no sound is hear. My reading and writing class is as explained in another post in the site:
This is the function that reads the file:
// read a wav file into this class public boolean read(DataInputStream inFile) { myData = null; byte[] tmpInt = new byte[4]; byte[] tmpShort = new byte[2];
[Code] ....
I can't hear the copied wav file, but still the wav file is correctly copied...
public class Tester { public static void main(String[] args) { Product p1 = new Product(); p1.loadFromFile("Monitor.pr"); System.out.println("Actual: " + p1.toString()); System.out.println("Expected: Product [id=12345, name=Monitor, description=A freakin great monitor!]");
p1.setId(11111); p1.setName("another product"); p1.setDescription("Description of another product!");
[code]....
The expected output is what my program should be doing and the actual output is what it's doing instead. As you can see, my code works for the middle test. But I cannot understand why it won't load the first fileFor the second half, the id and the quantity are separated by a comma... I'm not really sure how to deal with that. As you can see, I tried using a delimiter, but it doesn't seem to be doing any good.
I have printed the result of my program into an output file.
For some reason I can't figure out how to get the file output.txt to actually print.
I've tried printing it like I would normally print a file but it's not working.
Java Code:
final PrintStream console = System.out; File file = new File("output.txt"); PrintStream out = new PrintStream(new FileOutputStream(file)); System.setOut(out); System.out.println(collection.toString()); System.setOut(console);
What do I do after this? mh_sh_highlight_all('java');
I know that the simple deployment using only applet tags inside HTML causes severe security restriction for the applet on the client side. but can this simple HTML file contains .jar files inside the applet tags instead of .class files.
I have a program that is a XML-parser, and it works fine when I'm running it from NetBeans. But when I create a JAR-file and run the very same program, it cannot find the xml file. Consider this small program that addresses my problem:
So basically i have to read from a text file and get some information back from that and print to screen. Im quite confused and im not sure what loop i should use first to scan the text and receive certain information back?
I want to search for files using wildcards. After a lot of googling I found [URL] ..... I downloaded the .java files and put them in the same directory as my own java file. but now I don't know, how to include this java file.
I wanted to build an mp3 player as a Java project. One crucial part of the project involves being able to play an mp3 fie. I am not able to find the right api (if one exists) and am not able to find a suitable answer when searching on the web. A simple code snippet illustrating the playing of mp3 file using Java program. Also, I am using Eclipse IDE and how to import files if any importing of files is required.
I am downloading around 50 PDF files programmatically using Java program(like a servlet service) one after another in for loop. I am observing that , i'm getting timeout error after few files are downloaded itself. How to solve this problem and download more files programmatically using java? The files are in my server at different location.
