「　」: Remove a range from java.util.Vector

2009年7月28日星期二

Remove a range from java.util.Vector

There is a method removeRange in AbstractList class, somehow it is protected. So, if you want to remove a range from a Vector, use subList(which is come from List) instead:

v.subList( 0, 12 ).clear();

The subList method returns a view(or a snapshot) instead of a copy to manipulates original container. So if you want to do any operation in specific range, use subList.

2 則留言:

Unknown2009年7月31日凌晨3:38
v.removeAll(v.subList(0,12));
這樣呢?

by overing
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Unknown2009年8月1日下午2:52
應該也是可以吧,我對 Java 不熟 orz

我猜它 return 一個 reference 的好處是可以做其他 vector 沒提供的操作
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