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hello.....
i have problem with getting file list from directory.
normally, if i gave path string, i can get.
"]File main_dir = new File ("C:");"
but i want to get file list with using string variable....
"File temp_dir = new File (string_variable);"
string_variable comes from a jtree.
when i did, it returned empty, there was no array.
soneone know how can i do?
regards
Your approach should work. print our your string_variable and make sure it's a good path.
Please put the code in a short program to demo your problem.
The source of a string for the File() parameter should have no bearing on the results.
Do a println() of the string_variable that you are using to see what the problem is.
What is returned by File.list() when there is nothing in the directory? or the File is not a directory?
String temp_string = null;
String temp_path=jTree1.getSelectionPath().toString();
for (int counnt=0;counnt<temp_path.length();counnt++ ){
char control;
control=temp_path.charAt(counnt);
if (control==(char)(44)){
temp_string = temp_string +(char)(92)+(char)(92);
}
else{
if (control!= (char)(91)) {
if (control!= (char)(93)) {
if (counnt==1) {
temp_string = Character.toString(control);
}
else{
temp_string = temp_string + Character.toString(control);
}
}
}
}
}
temp_path = temp_string;
JOptionPane.showMessageDialog(jComboBox1,temp_path , "selection chanced", WIDTH);
DefaultMutableTreeNode temp_node = (DefaultMutableTreeNode)jTree1.getLastSelectedPath Component();
DefaultTreeModel temp_model = (DefaultTreeModel)jTree1.getModel();
int plc = temp_model.getIndexOfChild(temp_model.getRoot(), temp_node);
JOptionPane.showMessageDialog(jComboBox1,Integer.t oString(plc), " get selection", WIDTH);
File temp_dir=new File(temp_string);
File[] temp_dir_list = temp_dir.listFiles();
JOptionPane.showMessageDialog(jComboBox1,Integer.t oString(temp_dir_list.length), "control", WIDTH);
String [] temp_dir_files = temp_dir.list();
int xcount= temp_dizin_list.length;
code is that....
jtree model is non hidden folders list
i wanna create child model under model selection.
with non hidden folders..
files at selected directory will list at list box.
Print the value of temp_path or temp_string before doing the File part.
What are you doing to the string at the top there?
what can i do?.....Quote:
Originally Posted by Tolls
i see string with messagedialogbox.....
there is no problem at there normally...
the string comes from jtee include ";" between every subfolder....
i checked them and change then with "\\" in a loop....
i use temp_string for create new "formal path string"
string formally corect...
if i write same string at code as manually....
there is no problem...
it works well...
but i can not transfer this string as variable to "new File ()"
And the value is?
I haven't used JTree before, so wasn't sure what you got back...but I would bet that there's something up with that formatting process you're doing. So print out the value of the string.
C:\\ uif2iso -> println result of string after my loop
i do not understand......
there is space....
i do not see when i dispaly same string with showmessagedialog....
There you go.
Figure out why that speace is appearing and you might have your answer.
Find out what it looks like when it comes out of the JTree...something like println("#" + string + "#"). The '#'s are to show up spaces.
If it's not there out of the JTree then you've added it somehow.
i added an extra case for spaces to my loop...
string look like ex one but works this time...
thanks a lot for everyone....
who care me.....
who read my messages...
who write answer...
with my best regards
Rule 1 for sorting out problems, make sure the code is working with the data you think it's working with.
:)
you are right....Quote:
Originally Posted by Tolls
i learned it so hard way....
firm gave me 200 000 records for development and testing....
i wrote code with them....
everything worked correctly for them....
i gave the program to frim...
when program begun to work with real data (over then 100 million);
it was broken as glass :D
next three days, i could not sleep....
i wrote code again :D
thanks for everything...