Detect special character from a String

Question

Hello guys,
Some of the files in unix box contain special characters . I need to strip these special character in the filename to underscore. however, I do not want to strip off special character like _ - ^ . @
Pattern escaper = Pattern.compile("([^a-zA-z0-9_-^.@])");
I couldn't strip off the caret. Appreciate any advice please. Thanks in advance!
Cheers,
Mark

Answer 1

Hi Alice,
I tried your suggestion:
     public static void main(String[] args) throws IOException {
          rename(args[0], args[0].replaceAll("[^a-zA-Z0-9\\\\/:@._^-]","_"));
     public static void rename(String from, String to) throws IOException{
          // File (or directory) with old name
          File file1 = new File(from);
          // File (or directory) with new name
          File file2 = new File(to);
          // Rename file (or directory)
          boolean success = file1.renameTo(file2);
          if (!success) { // File was not successfully renamed
               System.out.println("failed to rename : " + file1);
C:\workspace\TestOnly\bin>java -cp . com.test.TestClass C:\Apps\mud\1~2.txt
C:\workspace\TestOnly\bin>java -cp . com.test.TestClass C:\Apps\mud\1^2.txt
failed to rename : C:\Apps\mud\12.txt
C:\workspace\TestOnly\bin>java -cp . com.test.TestClass C:\Apps\mud\[email protected]
C:\workspace\TestOnly\bin>java -cp . com.test.TestClass C:\Apps\mud\1@2$-_3mn.txt
C:\workspace\TestOnly\bin>java -cp . com.test.TestClass C:\Apps\mud\1@2$-_3mn.txt
failed to rename : C:\Apps\mud\1@2$-_3mn.txt
C:\workspace\TestOnly\bin>java -cp . com.test.TestClass C:\Apps\mud\1@2$-_3m'n.txt
C:\workspace\TestOnly\bin>java -cp . com.test.TestClass C:\Apps\mud\1@2$-_3m'^n.txt
failed to rename : C:\Apps\mud\1@2$-_3m'n.txt
C:\workspace\TestOnly\bin>java -cp . com.test.TestClass C:\Apps\mud\1@2$-_3m'^n.txtbut however, whenever I put in a caret in the filename, it always failed to rename. Appreciate your further advice please. thanks in advance!
Cheers,
Mark