sublist « ArrayList « Java Collection Q&A

1. How to take a valid sublist in Java?    stackoverflow.com

I have this weird (I think) problem in Java. I have an ArrayList and I want to take a sublist. But I get the follow exception.

package javatest;

import java.util.ArrayList;

public class JavaTest {

   ...

2. Does sublist(from,to).clear() allow garbage collection of the cleared part of an ArrayList?    stackoverflow.com

In Java, when having some non-empty ArrayList, does

list.sublist(from,to).clear()

3. sublist of arraylist???    coderanch.com

import java.util.List; import java.util.ArrayList; public class SLTest { public static void main(String[] args) { List list = new ArrayList(); list.add("a"); list.add("b"); list.add("c"); list.add("d"); list.add("e"); printList(list); List sub = list.subList(1, 4); printList(sub); } public static void printList(List aList) { for (int i = 0; i < aList.size() - 1; i++) { System.out.print(aList.get(i) + ", "); } System.out.print(aList.get(aList.size() - 1) + "\n"); } ...

4. ArrayList subList    forums.oracle.com

snguyen wrote: Why do I get a ClassCastException here? Because the return value of subList() is not ArrayList and ArrayList.subList() does indeed not return an ArrayList at all (it couldn't easily do this and still conform to the contract of subList()). subList() returns a List and that should be sufficient. There isn't anything terribly important that you can do with an ...

5. ArrayList.subList() problem    forums.oracle.com

okay. what the code should do is create a temporary TreeSet() with only 5 items from the call to subList(). when i output what is stored in the TreeSet() i am getting from 4 to 5 items. for example: 0 // j = 0; [Hearts 5, Hearts 6, Spades 8, Diamonds Jack] Hearts 5 Hearts 6 Spades 8 Diamonds Jack 5 ...