java - null pointer exception while resizing arrays -

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i have nullpointerexception in line "newindexer[i].index = (int)double.positive_infinity;" , cannot figure out why. appreciated.

    public void resizeindexer(int newkey)     {            if (maxheap >= newkey)             return;         if (newkey > maxheap){             handle[] newindexer = new handle[newkey + 1];             (int = 0; < newkey; i++){                 if (i < maxheap)                 newindexer[i] = this.indexer[i];                 else{                     system.out.println(i);                     newindexer[i].index = (int)double.positive_infinity;                     newindexer[i].status = false;                 }             }                    maxheap = newkey;             indexer = newindexer;         }     }

you have create new handle instance each new index of new array before modifying index , status members :

        (int = 0; < newkey; i++){             if (i < maxheap)                 newindexer[i] = this.indexer[i];             else{                 system.out.println(i);                 newindexer[i] = new handle ();                 newindexer[i].index = (int)double.positive_infinity;                 newindexer[i].status = false;             }         }

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