About IO operation , the file path problem.

 This post last edited by the roypayne0305 on 2013-10-06 08:56:16

txt files and java files in the same directory ,

File f2 = new File ("bb.txt");

write this , the path is wrong? Seemingly not found. Why ?


------ Solution ------------------------------------ --------

 File f2 = new File("bb.txt");

This is in eclipse, the project's root directory, run the cmd current path .
------ Solution ---------------------------------------- ----
the src directory bb.txt drag on the line
------ Solution ---------------------- ----------------------
this relative path is relative System.getProperty ("user.dir") for the purposes of your output click user.dir content to know.
------ Solution ---------------------------------------- ----
If you do not provide specific disk path ( for example : d: \ \) this line , then the program will default in the course of the current project directory ( that is, more than on a src directory ) as a file directory ! create a file when you run the program code is correct, right- click the project will be able to find the refresh project files !
------ Solution ---------------------------------------- ----
should be placed TESTIO below , System.getProperty ("user.dir")
------ Solution -------------- ------------------------------

  
     
  
for the hair is it so ? Who knows ? Be able to analyze it a little more bottom ?  
First java relative path is System.getProperty ("user.dir") as a reference , is your class compiled bin ( relative to the IDE) path , but in the bin directory of your bb.txt under the test / io / TestTxt , of course, can not find it , you first need to understand that your src path is not your last class path and the class path and text files in a directory are not able to find, understand ?
------ Solution ---------------------------------------- ----
try this bar

InputStream is = this.getClass().getClassLoader()
  				.getResourceAsStream("bb.txt");

------ For reference only ----------------------------------- ----
if not in the same directory
------ For reference only -------------------------- -------------


txt file is not and java file in the same directory you ?

why this will not work ? Who explain ?

Is compiled class files in the same directory you ? Who knows ?
------ For reference only -------------------------------------- -





for the hair is it so ? Who knows ? Be able to analyze it a little more bottom ?
------ For reference only -------------------------------------- -

  
     
  
for the hair is it so ? Who knows ? Be able to analyze it a little more bottom ?  
because the eclipse is project unit drops . TestIo this project which has bb.txt files?
------ For reference only -------------------------------------- -
should be placed under the project , and not with the same level of SRC .