| # | Line 556 | Line 556 | public class TreeMap<K,V> | |
|---|---|---|
| 556 | Entry<K,V> t = root; | |
| 557 | ||
| 558 | if (t == null) { | |
| 559 | + | if (key == null) { |
| 560 | + | if (comparator == null) |
| 561 | + | throw new NullPointerException(); |
| 562 | + | comparator.compare(key, key); |
| 563 | + | } |
| 564 | incrementSize(); | |
| 565 | root = new Entry<K,V>(key, value, null); | |
| 566 | return null; | |
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| + | Added lines |
| < | Changed lines |
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