Creating A File With Eclipse

Apr 13, 2014

import java.io.*;
public class ReadNumbers
{
void input()
{
String File_name = "num.txt";
File numbers = new File(File_name);
 
[code]....

I am using eclipse and I went to file, add new file and named it num.txt:shot.png like show in the picture.

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Cannot Open Jar File In Eclipse

Feb 27, 2015

i have an older file I was working on 2 months ago and when i try to open it in eclipse I get a message corruption error. I know this is not possible since I was just working on it a while back, and it's the same program version as what i am currently using..Or would I do a file import instead?

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WAV File Using Java Eclipse

Mar 26, 2014

I am trying to .wav file using java eclipse ..

[B]import java.io.* ;
import sun.audio.*;
 public class AudioDemo{
public static void main(String[] args)
throws Exception

[Code] ....

And I am getting the following errors ...

Exception in thread "main" java.io.FileNotFoundException: E:pppp.wma (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileInputStream.<init>(Unknown Source)
at AudioDemo.main(AudioDemo.java:10)

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File Paths In Eclipse / Jgrasp

May 1, 2014

So I downloaded jgrasp and eclipse on a new computer and am trying to figure out how their filing/path system works.In eclipse I created a new project under which I've imported all my files for my comp sci class, so they're all under this one project which is my only project. I attached a pic of what my eclipse workspace looks like. In this project folder is a file I'm trying to run.

I keep getting an error saying "editor" does not contain a main type.When I change my class name to the project folder I end up getting an option to run the program as an applet or an application, but either one I choose I get the same error message. In the bottom it gives me a warning saying

DescriptionResourcePathLocationType
Build path specifies execution environment CDC-1.1/Foundation-1.1. There are no JREs installed in the workspace that are strictly compatible with this environment. CS1050AssignmentsBuild pathJRE System Library Problem

I tried running the program in jgrasp and got this error

----jGRASP wedge2 error: command "javac" not found.
---- This command must be in the current working directory or
---- on the current system PATH or jGRASP PATH to use this function.
---- System + jGRASP PATH is "C:UsersQudrat.MommandiDocuments;C:Windowssystem32;C:Program Files (x86)InteliCLS Client;C:Progra

[code]...

I have the JDK installed in program files, I have the correct versions of eclipse and Jgrasp, and have uninstalled / reinstalled the JDK/Jgrasp/Eclipse so I don't know what the problem is?

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Web Services :: How To Invoke Methods Using Stand Alone File No Eclipse

Apr 17, 2015

I am trying web service first time so want to client application which will consume webservice which are hosted online for testing purpose

now i want to call some methods defined in this wsdl [URL]....

can anyone tell how should i invoke methods using stand alone java file no eclipse which jar files should i use ?

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Read Text File Into Object Array And Creating Random Access File

Dec 8, 2014

I am working on a project that requires me to build a database with random access file, representing products, the base product contains a name (about 30 characters), a price (double), and a quantity (integer). I have worked on this project for probably 15+ hours and have tried so many things and feel like I've barley made any progress...

The part i am really struggling with is taking the data from the text file and creating an object array with it using the product class. Once ive accomplished that, i have to use that data to create a random access file with the data.

Here is the base Product class that must be used to create the objects for the array.

public class Product
{
public String pName;
public String stringName;
public double price;
public int quanity;

[Code] .....

And then here is the data from the text file that i must extract to use to create product objects.

Dill Seed,938,34
Mustard Seed,100,64
Coriander Powder,924,18
Turmeric,836,80
Cinnamon (Ground Korintje),951,10
Cinnamon (Ground) Xtra Hi Oil (2x),614,31
Cinnamon (Ground) High Oil (1X),682,19

These continue for about 40-50 entries, they are not separated by a blank line though i had to add those so it would display correctly, each entry is on its own line with name separated with spaces, then price after a comma, then quantity after the second comma.....

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Reading Text File Into Object Array And Creating Random Access File?

Dec 8, 2014

I am working on a project that requires me to build a database with random access file, representing products, the base product contains a name (about 30 characters), a price (double), and a quantity (integer). I have worked on this project for probably 15+ hours and have tried so many things and feel like I've barley made any progress...

The part i am really struggling with is taking the data from the text file and creating an object array with it using the product class. Once ive accomplished that, i have to use that data to create a random access file with the data.

Here is the base Product class that must be used to create the objects for the array.

public class Product
{
public String pName;
public String stringName;
public double price;
public int quanity;
//Constructor
public Product( String pName, double price, int quanity )

[code]....

and then here is the data from the text file that i must extract to use to create product objects.

Dill Seed,938,34

Mustard Seed,100,64

Coriander Powder,924,18

Turmeric,836,80

Cinnamon (Ground Korintje),951,10

Cinnamon (Ground) Xtra Hi Oil (2x),614,31

Cinnamon (Ground) High Oil (1X),682,19

these continue for about 40-50 entries, they are not separated by a blank line though i had to add those so it would display correctly, each entry is on its own line with name separated with spaces, then price after a comma, then quanity after the second comma.....

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Creating A System That Will Ask User To Create A File That Will Store To Text File

Mar 9, 2015

I am new to java and I am creating a system that will ask the user to create a file that will store to a text file, Once the user created the file I have a class that will let the user input the subject name that has been created, However, I keep on getting this java.util.nosuchelementexception.Here's my code:

public void display_by_name()
{
String id, name,total;
String key[]=new String[30];
String value[]=new String[30];
int i=0;

[code]....

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Creating Inventory File As Random Access File

Oct 26, 2014

I need to write a program that will create an inventory file as a random access file. The problem that I am having is that among the things I need to add to the random access file is a "car name". Since random access files are byte based I don't know how I could possibly write and then read a string value.

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Created New Project At Eclipse With Code Pasted Inside DomApli Container In Java File

Aug 11, 2014

I created a new project at eclipse with this code pasted inside a domApli container in a java file, I tried to run it but it wont work,

package domApli;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Prg2 extends JFrame implements ActionListener{
JLabel lblNom;
JLabel lblEdad;
JTextField txtNom;

[code]...

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Creating A Package File

Aug 14, 2014

Though have been playing around with my ebook but finding it difficult to get along with the topic PACKAGE&INTERFACES, I find it challenging to write a package file despite the book I currently studying and online tutorial.. so I want a more explanatory format to comprehend the piece cos without knowing it.

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OpenCSV When Creating JAR File

Mar 1, 2014

I'm having a problem with using the openCSV library when I create a JAR file. I'm currently using BlueJ to run my code. When I compile my program in there, I have no problems whatsoever and it runs great, yet when I create my program into a JAR file, my application doesn't work.

I would think that my problem is either stemming from faulty exception handling, although I don't understand why an input would work in the BlueJ environment, but not when using the JAR file. Or, perhaps the openCSV library isn't in a correct class path(I don't know if this is correct terminology).

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Possible To Delay Creating A File

Sep 26, 2014

It is possible to delay the creation of a file until I know I am writing to it.

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Creating File Directory

May 12, 2014

I am working on a java logic game and I want it to be able to work on other people's Mac's, so I tried to figure out how to make it create a folder in which it can create files. The file creating is going fine however the folder never seems to create.Here is the code I attempted to use:

File logicFile = new File("/Library/Application Support/LogicGameSupport");
if(!logicFile.exists()){
if(logicFile.mkdir()){
System.out.println("Directory success");
}else{
System.out.println("Directory failed");

}

}

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Creating XML File In Java

Jul 30, 2014

I'm getting a DOMException, "HIERARCHY_REQUEST_ERR". I know that the problem is from the following code towards the bottom in my function, but I don't know how to deal with it. When I get rid of doc.appendChild(staff);, I get rid of the problem, but it obviously doesn't add the new entry to my root element.

Element staff = doc.createElement("Staff");
doc.appendChild(staff);

import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;

[Code] .....

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Creating A Jar File Using Command Prompt

Mar 5, 2014

I currently finding a way how can i package a required/dependency JAR with my runnable JAR only using a command prompt like :

how the ECLIPSE IDE export RUNNABLE JAR

I am running on a linux environment, is there a way to do this.

I can only make Runnable Jar without the required JAR by using this command

jar cvfm Test.jar manifest.txt package/*.class

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I/O / Streams :: Creating Hidden File

Jul 30, 2006

I want to create hidden files, some sample code for doing this.

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Creating / Editing And Checking A File

Apr 7, 2015

I need to check an existence of a file if it is already created or not but the problem is on my code I obviously making the file first before I am able to check if it exist or not.

File createFile = new File ("//path/name.txt");

I've read somewhere that that line should not make a file without the createFile.createNewFile(); but when I tested it and on my program, my program was creating the file even without the .createNewFile() method with that said. I'm confused on how would I be able to check an existence of a file without of course having it pre-created. here is the partial code:

File newFile = new File ("C:/Documents and Settings/Admin/Desktop/Keys.txt");
BufferedWriter write = new BufferedWriter (new FileWriter (newFile));
BufferedReader read = new BufferedReader (new FileReader (newFile));
 
if (newFile.exist())
{
System.out.print("File is existing");
}

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Creating A Text File And Writing To It

Jul 19, 2014

There are several ways in Java to create a text file and write to it. But which is the most effective way among them? Any example with code?

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Creating A Text File With Program Output

Sep 21, 2014

I'm trying to copy my program output to a text file and still have it be displayed in the console.

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Creating File Or Folder But Using User Input For Name

Nov 14, 2014

File dir = new File("file"); //creates folder named file
File dir1 = new File("file.txt"); //creates file

But I want to take in a file name from user e.g.

BufferedReader br = new BufferedReader(is);
String filename = br.readLine( );
File dir = new File(filename + ".txt");

its expecting a string literal is there a way round it to take a string???

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Creating New Properties File Appending If It Exists

Feb 4, 2015

I'm currently working on a java project simply to learn java. So far, it creates a window and makes a properties file, or appends data to it if it already exists. The problem is that I'm not quite sure how to check if the file already exists to append data to it. I'm currently using a boolean (configCreated) that appends data when true, and creates a file when false. The problem is that this boolean is always false since it's at the beginning.

Java Code:

package Setup;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Properties;

[code]...

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Creating TXT File - Program Keeps Printing Exception Error

Apr 10, 2014

I'm trying to have the program create a .txt file for me but it is not working properly. It just keeps printing the exception error "The file could not be found" and exits the program.

// This program asks the user for input for a name, phone number and notes up to 200 entries.
// It stores every contact in a file. Type 'h' for help while running this program.

import java.util.Scanner;
import java.io.*;
public class Phonebook {
static Entry[] entryList = new Entry[200];
static int numEntries;
public static void main(String[] args) {

[Code] ....

After running the code, I go into my workspace folder and I see that the file was created. What to do because running the program will always print "could not find the file".

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Creating WordCounter Class With A Constructor That Takes File Name As Parameter

Mar 4, 2014

Instructions

Create a WordCounter class with a constructor that takes a file name as a parameter

The class should have two fields: one for the file name and one for a HashMap to store word count information

The constructor should call a private method, countWords, that reads in the file and counts the word frequencies

The class should contain a get method for each field, as well as a print method that prints out the map in the following format:word:frequency

When printing, the map should be sorted by either the word order or frequency (Hint: see Collections.sort)

You should include the sample text file on Blackboard. This is what i got so far

Java Code:

import java.io.File;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Scanner;
public class WordCounter

[Code] ....

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JSF :: Null Pointer Exception While Creating File From Resources In Managed Bean Class

Feb 7, 2014

i want to list files from resources folder like this:

@ManagedBean
public class galley implements Serializable {
private List<String> list;
@PostConstruct
public void init() {
list = new ArrayList<String>();

[Code] ....

but it give me a null pointer exception on fList .... The directory of resources is :

How is this caused and how can I solve it?

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Difference Between Eclipse And JDK?

Feb 27, 2014

I'm not sure if that's the right place to ask

But I am a bit confused:

I know that JDK means "Java Development Kit" , but isn't Eclipse the same thing? (so why it's called "IDE"?)

Or maybe Eclipse is a type of JDK?

Or actually JDK and Eclipse are 2 different things

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