array of iles

hello
can somebody tell me how to write data to array of files ?
thanks

Quote:

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Originally Posted by sara12345

hello
can somebody tell me how to write data to array of files ?
thanks

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You can do this with a for loop.

yes I know but let me give you, because I have an error I don't know why

Code:

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static void Reodering_sub( ){

        reodering_output= new File [vector_SA.size()-1];
        try {
 if (vect_min.size()>1){
                  vect_ordered_sub.setSize(test_after_filling_ordering.size());
                  Collections.copy(vect_ordered_sub, test_after_filling_ordering);
                    Reodering_sub();
                    test_after_filling_ordering.add(vect_min.get(0).toString());
                  _2nd_min_element=vect_min.get(0).toString();
              vect_ordered_temp.removeElement(next_point);
              next_point=_2nd_min_element;       
              vect_min.remove(vect_min.get(0).toString());
                   
                        FileWriter writer_rodering_out = new FileWriter(reodering_output[y]);

                        for (int g = 0; g < vect_ordered_sub.size(); g++) {
                                writer_rodering_out.write(vect_ordered_sub.get(g).toString());
                                //writer_rodering_out.write("\r\n\r\n");
                        }// end for (g) loop 
                        // close wrting into file
                        writer_rodering_out.close();
                       
          }
          }
                       
              } catch (FileNotFoundException ex) {
                      ex.printStackTrace();
                  } catch (IOException ex) {
                    ex.printStackTrace();
                  }                                 
}

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Quote:

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Originally Posted by Fubarable

You can do this with a for loop.

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Yes, and why not go all the way and build another wrapper that delegates its own output to all the wrapped outputs; that way you can have a nice reusable component; have a look:

Code:

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// note the plural -s
public class OutputsStream extends OutputStream {
       
        private OutputStream[] outs;
       
        public OutputsStream(OutputStream ... outs) {
                this.outs= outs;
        }
       
        public void flush() throws IOException {
               
                for (OutputStream out : outs)
                        out.flush();
        }

        public void close() throws IOException {
               
                for (OutputStream out : outs)
                        out.close();
        }

        public void write(byte[] b) throws IOException {
               
                for (OutputStream out : outs)
                        out.write(b);
        }

        public void write(byte[] b,int ofs, int len) throws IOException {
               
                for (OutputStream out : outs)
                        out.write(b, ofs, len);
        }

        public void write(int b) throws IOException {
               
                for (OutputStream out : outs)
                        out.write(b);
        }
}

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Easy and it fits the IO wrapper framework.

kind regards,

Jos

no but my problem is that I will find vector at each iteration of for loop and then I have to vector into file
this is my code

Code:

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 File[]reodering_output ;
              reodering_output= new File [vector_v1.size()-1];

              for (int y=0; y< vector_v1.size()-1; y++){               

                v2.setSize(v3.size());
                Collections.copy(v2,v3);
                                 
                v3.add(v5.get(0).toString());
                _2nd_min_element=v5.get(0).toString();
                v2.removeElement(next_point);
                next_point=_2nd_min_element;       
                v5.remove(v5.get(0).toString());
                             
                                     
                FileWriter writer_rodering_out = new FileWriter(reodering_output[y]);

                for (int g = 0; g < v2.size(); g++) {
                  writer_rodering_out.write(v2.get(g).toString());
                //writer_rodering_out.write("\r\n\r\n");
                }// end for (g) loop 
                // close wrting into file
                writer_rodering_out.close();
                                       
                            }}

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but there is an error when I run program can you tell me why