Where to put a textfile I want to use in eclipse

Question

I need to read a text file when I start my program  I m using eclipse and started a new java project  In my project folder I got the  src  folder and the standard  JRE System Library    staedteliste txt    I just don t know where to put the text file  I literally tried every folder I could think off    I cannot use a  hard coded  path because the text file needs to be included with my app     I use the following code to read the file  but I get this error   Error java io FileNotFoundException staedteliste txt No such file or directory      public class Test    ArrayList lt String   gt  values   public static void main String   args           TODO Auto-generated method stub      URL url   Test class getClassLoader   getResource  src mjb staedteliste txt        System out println url getPath        I get a nullpointerexception here      loadList       public static void loadList         BufferedReader reader      String zeile   null       try           reader   new BufferedReader new FileReader  src mjb staedteliste txt             zeile   reader readLine                       ArrayList lt String   gt  values   new ArrayList lt String   gt              while  zeile    null                             values add zeile split                    zeile   reader readLine                      System out println values size             System out println zeile          catch  IOException e            System err println  Error    e

User · Answer

If this is a simple project  you should be able to drag the txt file right into the project folder   Specifically  the  project folder  would be the highest level folder   I tried to do this  for a homework project that I m doing  by putting the txt file in the src folder  but that didn t work   But finally I figured out to put it in the project file   A good tutorial for this is http   www vogella com articles JavaIO article html   I used this as an intro to i o and it helped

User · Answer

Suppose you have a project called  TestProject  on Eclipse and your workspace folder is located at E  eclipse workspace  When you build an Eclipse project  your classpath is then e  eclipse workspace TestProject  When you try to read  staedteliste txt   you re trying to access the file at e  eclipse workspace TestProject staedteliste txt   If you want to have a separate folder for your project  then create the Files folder under TestProject and then access the file with  the relative path   Files staedteliste txt  If you put the file under the src folder  then you have to access it using  src staedteliste txt  A Files folder inside the src folder would be  src Files staedteliste txt  Instead of using the the relative path you can use the absolute one by adding e  eclipse workspace  at the beginning  but using the relative path is better because you can move the project without worrying about refactoring as long as the project folder structure is the same

User · Answer

Just create a folder Files under src and put your file there  This will look like src Files myFile txt  Note   In your code you need to specify like this Files myFile txt e g   getResource  Files myFile txt      So when you build your project and run the  jar file this should be able to work

User · Answer

Ask first yourself  Is your file an internal component of your application    That usually implies that it s packed inside your JAR  or WAR if it is a web-app  typically  it s some configuration file or static resource  read-only     If the answer is yes  you don t want to specify an absolute path for the file  But you neither want to access it with a relative path  as your example   because Java assumes that path is relative to the  current directory   Usually the preferred way for this scenario is to load it relatively from the classpath   Java provides you the classLoader getResource   method for doing this  And Eclipse  in the normal setup  assumes src  is to be in the root of your classpath  so that  after compiling  it copies everything to your  output directory   bin     the java files in compiled form    class    the rest as is   So  for example  if you place your file in src Files myfile txt  it will be copied at compile time to bin Files myfile txt    and  at runtime  bin  will be in  the root of  your classpath  So  by calling getResource   Files myfile txt    in some of its variants  you will be able to read it   Edited  Further  if your file is conceptually tied to a java class  eg  some com example MyClass has a MyClass cfg associated configuration file   you can use the getResource   method from the class and use a  resource  relative path  MyClass getResource  MyClass cfg    The file then will be searched in the classpath  but with the class package pre-appended  So that  in this scenario  you ll typically place your MyClass cfg and MyClass java files in the same directory

User · Answer

You should probably take a look at the various flavours of getResource in the ClassLoader class  https   docs oracle com javase 1 5 0 docs api java lang ClassLoader html

User · Answer

Take a look at this video  All what you have to do is to select your file  assuming it s same simple form of txt file   then drag it to the project in Eclipse and then drop it there  Choose Copy instead of Link as it s more flexible  That s it - I just tried that

User · Answer

MJB  Please try this    In eclipse  Right click  on the text file u wanna use   see and copy the complete path stored in HDD like  if in UNIX   home sjaisawal Space-11 4-template provisioning devenv Test src testpath testfile txt   put this complete path and try  if it works then class-path issue else GOK

User · Answer

Depending on your Java class package name  you re probably 4 or 5 levels down the directory structure   If your Java class package is  for example  com stackoverflow project  then your class is located at src com stackoverflow project   You can either move up the directory structure with multiple      or you can move the text file to the same package as your class   It would be easier to move the text file

User · Answer

One path to take is to   Add the file you re working with to the classpath Use the resource loader to locate the file       URL url   Test class getClassLoader   getResource  myfile txt        System out println url getPath              Open it

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