know my code sample file of renaming a file and deleting an original file will work fine but when I use the code within my main java file - it appears to populate the file that I want populating fine but wont delete the origional. I have everything on my c drive so I can very easily keep track of what files I do and don't have.
Can using the same files in different methods cause problems? (Beginning Java forum at JavaRanch)
I'm reading from one file and writing it into another.I then want to delete the first file and use the second (it will get the first files name) .My sample java file works completely fine but it doesn't work on my actual file -it looks like it populates my test file like it should but it does not delete the original. Occasionally DMap.xml won't delete either - I try and rename it and normally I get the error of 'the file is open in Java platform SE binary' so the files is open somewhere - but I thought I had closed it correctly so have I done that wrong? I have put the basic code :
public class DeleteEnvironmentsWindow extends JDialog {
String xmlFile = "c:DMap.xml";
String fromFile =xmlFile
public void removeEnvironment(){
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
Document doc = null;
[code]....
What step to know to develop software..
View Replies View RelatedIn a program I created, I'm using a text file that contains some texts needed for the program. The method relevant to this is something like the following.
private String wordgen(){
try {
BufferedReader reader = new BufferedReader(new FileReader("src/Resources/adjectives.txt"));
Random rand = new Random();
int low = rand.nextInt(400);
String fil="";
int i=0;
while(i!=low){
[Code]...
The program runs fine in netbeans project but once the jar is created it does not corporate with the text file. ("null" is returned) How can I attach text files to jar and exe?
I need to transformation the txt files into xml files, but each row txt files don't have same elements, for example the first book is composite one author
<books>
<book>Title</book>
<price>price</price>
<author>Author</author>
</books>
but the second book is composite two author
<books>
<book>Title</book>
<price>price</price>
<author>Author</author>
<author>Author2</author>
</books>
I would have the xml files with the number of authors variables, I can use JAXB for my problem?or not?
I want small code in java
I restricted to .exe(Ex:usersfile.exe) file uploading in java by checking with extension.Now i renamed .exe to .png or txt or etc..(Ex:usersfile.exe to usersfile.png). Now it is uploading but my requirement is after renamed also .exe restricted to uploading. It is possible or not in java and javascript?
i'm using JDK 1.6.
I am trying to run a java app from a webpage.
The java app is written with Netbeans.
Heres my files:
Java main class:
Java Code: package Classes;
import java.applet.Applet;
[Code].....
You can test the page here: Test page for launching the application via JNLP
Java Code:
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.sql.*;
public class TestSerializer
[Code] .....
I have written two methods called "contains" and "overlaps". The method "contains" is to detemine whether a point (x, y coordinate) is within the surface area of a square object. The location of the square objects is determined by the location of the upper left corner of the square.The method "overlaps" is to determine whether two square objects overlap each other.
I have written these as two separate methods. However I want to change the method "overlaps", so that it uses the method "contains" within it. I.e. using a method within a method. Thereby hopefully making the "overlaps" method a bit more clear and easy to read.
Java Code:
/** Returns true of the point with the coordinates x,y, are within the square. */
public boolean contains(int x, int y){
int sx = location.getX(); //"location" refers to a square object
int sy = location.getY(); // getX() and getY() are to find it's coordinates
// "side" is the side length of the square
if (x >= sx && x <= (sx + side) && y >= sy && y <= (sy + side)){
[code]....
What is wrong with my code? System.out.println prints the correct name, but it fails when i try to rename the files in a directory.
import java.io.BufferedReader;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.io.*;
import java.io.File;
[code]....
I was looking at the Sound API pages in the java tutorials. I was planning to use it to run wma files. Fortunately, for me, I found, soon into the tutorials, that these API DON'T support the type I have all of my files in (I have a ton of wma files but none of the libraries mentioned support them.)
I almost thought I heard JavaFx or whatever it's called does, but that sounds foreign and Netbeans lists it as a separate type of java in a way, so I don't know if it would be cross-platform or if it could work with the JavaSE API.) Nor do I know what JavaSX or whatever it's called is really, other than that it's more for internet than application.
If I wanted a JPanel or Applet acting as the content pane of a JFrame or being in a JFrame, could I use JavaFX (or whatever it's called) or some third party library (that I always tend to end up spending hours on trying to get it to find the jar files when I import them, so I hope I don't need too many jar files!!!! ) would it work with the JavaSE API?
I don't know much about Java and playing sounds (other than that there is a static method, I think under Toolkit, that will play a system beep) with programs.
However, I can see that that packages don't support certain types (so much for cross-platform!!!!!!! ) and also that a while back that Oracle took over and that they aren't really updating the Java Sound APIs really that much at all
So, without having to learn a whole new Java set of standards (assuming JavaFX or whatever it's called is a different set of standards from JavaSE), is there a way to play .wma?
That's all I seem to have on my computer.
(I suppose I could create new sounds, though if Oracle isn't updating the library, who knows if even that works anymore, but if you're trying to run a Java Media Player that runs lots of DIFFERENT sound file types, this seems a real setback. )
I heard you could convert them to MP3s (I heard there were free things that did it, but who knows if the things aren't filled with viruses that'll do it or, even if they're not, that they'll really mess up the quality of the sound and that I might lose the old .wma file in the process even if it doesn't corrupt the sound.)
But, even if I get a .mp3, I heard the main JavaSE libraries DON'T cover that either, though it was said it was easier to make it run them than .wma files.
MediaPlayer and the main JavaSE classes don't seem to be able to fit for this type of program (a java media player) that I was planning. Heck, they can't even play any music I have on my computer at all, media player or not.
I know that I need to use substrings, but I'm not sure how to implement them. All of the names are red in from the file "employees.txt".
Using the file Employees.txt
1) Scan the file and create user ids for each person according to the following scheme
a) Take the first and last character of the first name, convert them to upper case
b) Take the first and last character of the last name, convert them to upper case
c) Concatenate the results from a and b
i) Example: John Brown would yield => JNBN
d) Add the length of the first name to the length of the last name, disregarding spaces
e) Concatenate the result from step c to the result of step d
i) Example: John Brown would yield => JNBN9
f) Concatenate a four digit number to the end of this.
i) The numbers should begin with 0000 and increment by 1
ii) Example: If John Brown is the fifth name in the list the resulting UserID would be => JNBN90004
2) Display the user ids in four columns with a width of 14
How do I get my program to read .txt files? My code doesn't work. I use eclipse.
I tried to use FileReader and BufferedReader objects, but the code doesn't work.
How do I get my program to read .txt files in java?
I want to work on a project in which I have a GUI where I can choose certain variables from drop down menus. I want to use these variables to modify a few configuration files. I have looked upon internet for a few methods which can be used for the same. However, I am not sure about the method I should use. The files I want to modify consist of 10 -15 lines.
View Replies View RelatedI'm currently starting my thesis where my Project will involve creating a diff and merge tool for simulink slx files. These are built using several xml files, a png and sometimes some other data files. One can get to these files by changing the file extension to zip.
I am a bit troubled by this since I want to be able to handle all these files simultaneously and hence need to do this automatically when choosing the slx file.
recently I noticed that most of the Sun site pages have the extension .jspa, some even have .xml.So just curious about it because I don't know about jspa but as far as I know of xml, it is not rendered by browser like the way we see on Sun site.
View Replies View Relatedhow to delete the files from ftp location
View Replies View RelatedI have prepared a java tool (got codes from google/internet) which combined images and make a SWF file.
Java Code:
package swf;
import swf9.*;
public class SWF {
public static void main(String[] args) {
SWF9 swf = new SWF9();
//swf.makePNGs("D:/JAVA_PRACTICE8/Image", "Image", "320x240", 25, "D:/JAVA_PRACTICE8/Image/out.swf");
swf.makeJPEG2s("D:/JAVA_PRACTICE8/Image", "Image", "320x240", 25, "D:/JAVA_PRACTICE8/Image/out.swf");
[code]....
I am suppose to display some information from some text files I tried to do that but the output gives me information from one text file and not information from all text files.
public static void main(String args[]) throws IOException {
String occupations;
double unemployRate_By_Occupations_2008;
double unemployRate_By_Occupations_2009;
double unemployRate_By_Occupations_2010;
//declare the file object and open the file "occupations.txt";
File myFile = new File("occupations.txt");
[code]....
The first text file is:
2.5
3.3
2.6
3.1
2.4
2.7
2.6
[code]....
the second text file is:
4.6
5.7
5.2
6.9
4.5
4.3
[code]....
The third text file is :
4.8
5.6
5.2
6.2
4.6
4.6
2.7
[code]....
Reason for edit:: Renamed title to be more descriptive, added code tags, and removed font formatting
How can I extract data from two different files but produce one output. For example, the first three columns are from text_file_1 and the last column (the last foruth column of the output) is from text_file_2...
View Replies View RelatedI 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...
I have made a program on BlueJ but need to transfer the class to a pen drive so that I can take it to school and show it to my teacher. How is this done
View Replies View RelatedI'm trying to write information into a file using PrintWriter. The program complies correctly but when it get's to the following part of the program, an error is given. "Exception in thread 'main' java.io.FileNotFoundException" What is wrong with it?
System.out.print("Enter the filename:");
filename = kb.nextLine();
PrintWriter outputFile = new PrintWriter(filename);
outputFile.println(balance);
outputFile.print(item1+" "+item1Price);
outputFile.println(" "+item1Quantity);
outputFile.print(item2+" "+item2Price);
outputFile.println(" "+item2Quantity);
outputFile.print(item3+" "+item3Price);
outputFile.println(" "+item3Quantity);
outputFile.close();
System.out.println("Data written to the file.");
How to find the directories of the files. Unfortunately, I have not been able to grasp the concept behind this idea. If I find to see if a particular file is there, can I not go to the file directly rather then having to use CMD (command). What is the purpose of CMD?
Secondly, I took a c++ class and now I'm in my second course which is integration the materials from c++ in to java. We are learning about classes. I have not been able to understand what classes do for you...and I noticed that in c++ (visual studio) the main started like Java Code: int_tmain(...) mh_sh_highlight_all('java'); but the topic we covered yesterday started like Java Code:
public class helloworld
{
public class helloworld(String)
{}
} mh_sh_highlight_all('java');
Have 2 files File1.csv and file2.csv containing some values. Have to read both files and write unique values in to another file.
In the new the there must be unique rows and not duplicate rows (2 files contain some rows same). What is the best approach for doing this?
I have a set of files that are in folders.
All of the files are named the same thing...File1
The folder name that they are in actually has the name of the thing that is on the file.
I'm trying to figure out how I can write a program that will rename all of the files with a .ape ending to the name of their folder.