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SCJP 1.6版考題 196 - 修訂歷史
2026-04-13T13:40:20Z
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Ikk：新頁面: Given: 34. HashMap props = new HashMap(); 35. props.put("key45", "some value"); 36. props.put("keyl2", "some other value"); 37. props.put("key39", "yet another value"); 38. Set s...
2013-03-30T00:17:53Z
<p>新頁面: Given: 34. HashMap props = new HashMap(); 35. props.put("key45", "some value"); 36. props.put("keyl2", "some other value"); 37. props.put("key39", "yet another value"); 38. Set s...</p>
<p><b>新頁面</b></p><div> Given:<br />
34. HashMap props = new HashMap();<br />
35. props.put("key45", "some value");<br />
36. props.put("keyl2", "some other value");<br />
37. props.put("key39", "yet another value");<br />
38. Set s = props.keySet();<br />
39. //insert code here<br />
<br />
What inserted at line 39, will sort the keys in the props HashMap?<br />
<br />
A. Arrays.sort(s);<br />
B. s = new TreeSet(s);<br />
C. Collections.sort(s);<br />
D. s = new SortedSet(s);<br />
<br />
<div class="toccolours mw-collapsible mw-collapsed"><br />
<span style="font-size:medium;">解答</span><br />
<br />
----<br />
<div class="mw-collapsible-content"><br />
<span style="font-size: medium;">Ans: B </span><br />
<br />
<span style="font-size:medium;"> 解說:<br />
TreeSet是一個排序樹<br />
<br />
</span> <br />
</div></div><br />
{{SCJP 1.6版考題講解}}</div>
Ikk