Re: Unable to Overload toString for Object

Eric Sosman <esosman@comcast-dot-net.invalid>
Wed, 12 Feb 2014 13:57:59 -0500
On 2/12/2014 1:37 PM, markspace wrote:

On 2/12/2014 12:38 AM, Ojesh Dugar wrote:

Basically, I am able to access Bugzilla Webservice API through java
code(xmlrpc) and in return i get a object of <<class
java.util.HashMap>>. According to Bugzilla documentation two items
are returned, bugs and faults, both are array of hashes and I want to
access these. Thanks.

Cast to a HashMap and iterate over all of its keys.

(not tested):

// create bug
    Object createResult = rpcClient.execute("", new

   HashMap bugs = (HashMap)createResult;
   for( Object key : bugs.keySet() ) {
     System.out.println( "Key "+key.getClass().getName()
                       + "= "+key
                       + ", value "+ bugs.get( key ).getClass().getName()
                       + "= "+ bugs.get( key )

More info here:

     This probably won't work as written. The original post said
createResult.toString() produced "[Ljava.lang.Object;@2ee5e48a",
indicating that rpcClient.execute() returns an Object[], that
is, an array of Object references. (To those surprised that an
array of Objects is itself an Object: Someday it will all make
sense, I promise.) So what he needs to do is cast the returned
value to an Object[]:

    Object[] array = (Object[]) createResult;

.... then iterate over the contents of the array:

    for (Object obj : array) {

.... and then (assuming the Objects in the array are HashMaps as
advertised, or in any case *some* kind of Maps):

        Map bugs = (Map) obj;

.... and *then* he can iterate over the entries, either in the
manner markspace shows or by using the key/value pairs directly:

    for (Map.Entry ent : bugs.entrySet()) {
        Object key = ent.getKey();
        Object val = ent.getValue();

Eric Sosman

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