StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
20748867
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
3
CommunityOwnedDate
CreationDate
2013-12-23T18:07:48.620
FavoriteCount
0
LastActivityDate
2017-11-21T14:47:28.980
LastEditDate
2017-11-21T14:47:28.980
LastEditorUserId
974186
OwnerUserId
974186
ParentId
20748848
PostTypeId
2
Score
7
ViewCount
0
LastEditorDisplayName
text
Body
The short answer is: Use <pre><code>al.subList(1, 3).clear(); </code></pre> <hr> The <code>removeRange(int, int)</code> method is <code>protected</code>. You can only invoke it from a subclass of <code>ArrayList</code> or from a class within the same package as <code>ArrayList</code>. See <a href="https://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html" rel="nofollow noreferrer">Controlling Access to Members of a Class</a>. The only way to access the <code>removeRange</code> method is to subclass <code>ArrayList</code> and make the method public. E.g. <pre><code>public class RangeRemoveSupport<E> extends ArrayList<E> { public void removeRange(int fromIndex, int toIndex) { super.removeRange(fromIndex, toIndex); } } </code></pre> But then your code must use the subclass. Thus your code depends on this subclass and not just depends on <code>List</code> or <code>ArrayList</code>. A utility class within the same package to access it is not possible. E.g. <pre><code>package java.util; // <- SecurityException public class RemoveRangeSupport { public static void removeRange(ArrayList<?> list, int from, int to){ list.removeRange(from, to); } } </code></pre> This will cause a <code>SecurityException</code> <blockquote> <code>java.lang.SecurityException: Prohibited package name: java.util</code>. </blockquote> because you are not allowed to define classes in <code>java.util</code> for security reasons. Nevertheless for other packages it might be a way. I often use this strategy for tests. Then I put such a utility class in the same package as the production code to access some internals from tests that should normally not be accessible. This is an easy way without using a framework. EDIT <blockquote> Is there perhaps a function to replace items from range X..Y, to new items of a possible different size? for example: this list "0,1,2,3,4", I replace from 1..3 with "a,b,c,d,e", will result with : "0,a,b,c,d,e,4". </blockquote> <pre><code>List<String> list = new ArrayList<>(Arrays.asList("0", "1", "2", "3", "4")); List<String> subList = list.subList(1, 4); subList.clear(); subList.addAll(Arrays.asList("a", "b", "c", "d", "e")); System.out.println(list); </code></pre> will output <pre><code>[0, a, b, c, d, e, 4] </code></pre>
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POWhy removeRange method of ArrayList class is not working?
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USRené Link
UserOwnerUserId
1. USRené Link
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTApproveEditSuggestion
3. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.