vowels and consonants

    import java.lang.String;
    import java.io.*;
    import java.util.*;

    public class Vowels{

    public static void main(String args[])throws IOException{

      File aa = new File("C:\\Temp1\\1.txt");
      File bb = new File("C:\\Temp1\\2.txt");
      File cc = new File("C:\\Temp1\\3.txt");
      String text=Vowels.getContents(aa);
     System.out.println(text);
      for (int i = 0; i < text.length(); i++) {
      char c = text.charAt(i);
      if (c=='a' || c=='e' || c=='i' || c=='o' || c=='u') {

          Vowels.setContents(bb, c);
      }
      else
          if(c != 'a' || c != 'e' || c != 'i' || c != 'o' || c != 'u' || c != ' ')
          {
              Vowels.setContents(cc, c);  
          }

      }



    }

    static public String getContents(File aFile) {
        StringBuilder contents = new StringBuilder();

        try {
           BufferedReader input =  new BufferedReader(new FileReader(aFile));
          try {
            String line = null; 

            while (( line = input.readLine()) != null){
              contents.append(line);
              contents.append(System.getProperty("line.separator"));
            }
          }
          finally {
            input.close();
          }
        }
        catch (IOException ex){
          ex.printStackTrace();
        }

        return contents.toString();
      }

    static public void setContents(File aFile, char c)
    throws FileNotFoundException, IOException {
    if (aFile == null) {
    throw new IllegalArgumentException("File should not be null.");
    }
    if (!aFile.exists()) {
    throw new FileNotFoundException ("File does not exist: " + aFile);
    }
    if (!aFile.isFile()) {
    throw new IllegalArgumentException("Should not be a directory: " + aFile);
    }
    if (!aFile.canWrite()) {
    throw new IllegalArgumentException("File cannot be written: " + aFile);
    }


    Writer output = new BufferedWriter(new FileWriter(aFile));
    try {

    output.append(c);
    }
    finally {
    output.close();
    }
    }

    }