Top "Concurrentmodification" questions

Why am I not getting a java.util.ConcurrentModificationException in this example?

Note: I am aware of the Iterator#remove() method. In the following code sample, I don't understand why the List.…

java list concurrentmodification foreach

Why is a ConcurrentModificationException thrown and how to debug it

I am using a Collection (a HashMap used indirectly by the JPA, it so happens), but apparently randomly the code …

java exception collections concurrentmodification

Concurrent Modification exception

I have this little piece of code and it gives me the concurrent modification exception. I cannot understand why I …

java concurrentmodification

Getting a ConcurrentModificationException thrown when removing an element from a java.util.List during list iteration?

@Test public void testListCur(){ List<String> li=new ArrayList<String>(); for(int i=0;i<10;i++){ …

java list concurrentmodification

How to modify a Collection while iterating using for-each loop without ConcurrentModificationException?

If I modify a Collection while iterating over it using for-each loop, it gives ConcurrentModificationException. Is there any workaround?

java collections concurrentmodification

Using iterator on a TreeSet

SITUATION: I have a TreeSet of custom Objects and I have also used a custom Comparator. I have created an …

java collections iterator concurrentmodification treeset

java.util.ConcurrentModificationException with iterator

I know if would be trying to remove from collection looping through it with the simple loop I will be …

java iterator removechild concurrentmodification

java.util.ConcurrentModificationException in Android animation

There is something I miss with the notion of Synchronizing code in Android. Scenario There are always 3 items drawn on …

android animation concurrentmodification

How to avoid HashMap "ConcurrentModificationException" while manipulating `values()` and `put()` in concurrent threads?

Code: I have a HashMap private Map<K, V> map = new HashMap<>(); One method will put …

java multithreading concurrency hashmap concurrentmodification

Java HashMap add new entry while iterating

In a HashMap map = new HashMap<String,String>(); it = map.entrySet().iterator(); while (it.hasNext()) { entry = it.next(); …

java iterator concurrentmodification