Name: sdC67446 Date: 06/30/99


The method
    public String toString()
does not return the String specified in documentation:
  getClass().getName() + '@' + Integer.toHexString(hashCode())

Also method toString() throws unspecified NullPointerException if
instance has been created with DataFlavor();

The doc says:
--------------------------------------------------
public String toString()

      Description copied from class: Object
      Returns a string representation of the object. In general, the
      toString method returns a string that "textually represents"
      this object. The result should be a concise but informative
      representation that is easy for a person to read. It is
      recommendedthat all subclasses override this method.

      The toString method for class Object returns a string consisting
      of the name of the class of which the object is an instance, the
      at-sign character `@', and the unsigned hexadecimal
      representation of the hash code of the object. In other words,
      this method returns a string equal to the value of:

      getClass().getName() + '@' + Integer.toHexString(hashCode())
             

      Overrides:
            toString in class Object
      Tags copied from class: Object
      Returns:
            a string representation of the object.
---------Test.java--------------------------------
import java.awt.datatransfer.*;

public class Test {
    public static void main(String[] args) {
        try {
            DataFlavor df = new DataFlavor("text/plain");
            String expected = df.getClass().getName()+"@"+
                              Integer.toHexString(df.hashCode());
            System.out.println(df.toString());
            System.out.println(expected);
            System.out.println(expected.equals(df.toString()));
            df = new DataFlavor();
        } catch (ClassNotFoundException e) {
            System.out.println(e);
        }
        try {
            DataFlavor df = new DataFlavor();
            System.out.println(df.toString());
        } catch (NullPointerException e) {
            System.out.println("-- "+e);
        }
    }
}
---------Output-----------------------------------
java.awt.datatransfer.DataFlavor[mimetype=[text/plain; class=java.io.InputStream]]
java.awt.datatransfer.DataFlavor@ff23f224
false
-- java.lang.NullPointerException
--------------------------------------------------
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