Using an array in an object's constructor.

Question

i get a null pointer exception when i use this code:
public instrument(int newID, String newType, String newRenters [], int newPrice, String newKey, boolean newNeedsRepairs)
          super(newID);
          type = newType;
          for ( int x = 0; x < newRenters.length; x++)
               renters[x] = newRenters[x];
          price = newPrice;
          key = newKey;
          needsRepairs = newNeedsRepairs;
     }i'm getting all the variables from a file using this:
public void populate() throws IOException
          int x = 0;
          String line = new String();
          String temp [] = new String [1];
          String temp2 [] = new String [6];
          while ( stdfile.ready())
               line = stdfile.readLine();
               temp [x++] = line;
          for ( int y = 0; y < temp.length;y++)
               temp2 = temp[y].split(",");
               instrument temp1 = new instrument(Integer.parseInt(temp2[0]),temp2[1],temp2[2].split(" "),Integer.parseInt(temp2[3]),temp2[4],Boolean.parseBoolean(temp2[5]));
               add(temp1);
          }

Answer 1

heres the exact error message im getting
Exception in thread "main" java.lang.NullPointerException
at instrument.<init>(instrument.java:15)
at iContainer.populate(iContainer.java:34)
at main.main(main.java:7)
the bolded line is the erroneous one
public instrument(int newID, String newType, String newRenters [], int newPrice, String newKey, boolean newNeedsRepairs)
          super(newID);
          type = newType;
          for ( int x = 0; x < newRenters.length; x++)
               *renters[x] = newRenters[x];*
          price = newPrice;
          key = newKey;
          needsRepairs = newNeedsRepairs;
     }