檢視 SCJP 1.6版考題 213 的原始碼

Given a class whose instances, when found in a collection of objects, are sorted by using the compareTo() method,<br> 

which two statements are true? (choose two.) 
<br>&nbsp; A. The class implements java.lang.Comparable. 
<br>&nbsp; B. The class implements java.util.Comparator. 
<br>&nbsp; C. The interface used to implement sorting allows this class to define only one sort sequence. 
<br>&nbsp; D. The interface used to implement sorting allows this class to define many different sort sequences. 


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<span style="font-size:medium;">解答</span>

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<span style="font-size: medium;">Ans: AC   </span>

<span style="font-size:medium;"> 解說:
Comparable是在java.lang套件下 
<br>&nbsp; &nbsp; &nbsp; &nbsp; C是說實作排序時，僅能定義一種排序的順序 (sure) 
<br>&nbsp; &nbsp; &nbsp; &nbsp; D…，能定義許多不同的排序順序 
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{{SCJP 1.6版考題講解}}