Delete Range of Values from Collection

[Jason Cavett]

I've searched, but there doesn't seem to be any way to easily remove a
range of values from a Collection (specifically a Vector). I did see
that the Vector class has the method removeRange(int fromIndex, int
toIndex) but this is a protected method.

If I am looking in the wrong spot, could someone point me in the right
direction (or, if I have to write my own method, it would be good to
know that too).


Thank you

 

[Patricia Shanahan]

I've searched, but there doesn't seem to be any way to easily remove a
range of values from a Collection (specifically a Vector). I did see
that the Vector class has the method removeRange(int fromIndex, int
toIndex) but this is a protected method.

If I am looking in the wrong spot, could someone point me in the right
direction (or, if I have to write my own method, it would be good to
know that too).

See the subList method.

Patricia

 

[Tom Hawtin]

I've searched, but there doesn't seem to be any way to easily remove a
range of values from a Collection (specifically a Vector). I did see
that the Vector class has the method removeRange(int fromIndex, int
toIndex) but this is a protected method.

You can probably search through the source and see where removeRange is
called from.

From the documentation for List.subList:

"This method eliminates the need for explicit range operations (of the
sort that commonly exist for arrays). Any operation that expects a list
can be used as a range operation by passing a subList view instead of a
whole list. For example, the following idiom removes a range of elements
from a list:

"list.subList(from, to).clear();"

Note that it is a half-open range. The higher index is exclusive.

Tom Hawtin