How to copy a java.util.List into another java.util.List

by

Just use this:

List<SomeBean> newList = new ArrayList<SomeBean>(otherList);

Note: still not thread safe, if you modify otherList from another thread, then you may want to make that otherList (and even newList) a CopyOnWriteArrayList, for instance — or use a lock primitive, such as ReentrantReadWriteLock to serialize read/write access to whatever lists are concurrently accessed.

More Related Contents:

  1. How to copy Java Collections list
  2. What are the differences between a HashMap and a Hashtable in Java?
  3. Initialization of an ArrayList in one line
  4. Why is there no SortedList in Java?
  5. How to convert comma-separated String to List?
  6. Copying files from one directory to another in Java
  7. Getting an element from a Set
  8. Why there is no ConcurrentHashSet against ConcurrentHashMap
  9. Assert equals between 2 Lists in Junit
  10. Android-java- How to sort a list of objects by a certain value within the object
  11. Java Immutable Collections
  12. Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array))
  13. Performance considerations for keySet() and entrySet() of Map
  14. Java’s Collections.shuffle is doing what?
  15. Iterating over Java collections in Scala
  16. Is it faster to add to a collection then sort it, or add to a sorted collection?
  17. Why does LinkedHashSet extend HashSet and implement Set
  18. Flattening a collection
  19. Intersection of java.util.Map
  20. Java: how to convert HashMap to array
  21. The easiest way to transform collection to array?
  22. How to use Collections.sort() in Java?
  23. What is the Simplest Way to Reverse an ArrayList?
  24. Finding all objects that have a given property inside a collection [duplicate]
  25. Comparing two hashmaps for equal values and same key sets?
  26. When should I return the Interface and when the concrete class?
  27. Storing different types of elements in a List in Java
  28. Are they any decent on-disk implementations of Java’s Map?
  29. Hashmap implementation to count the occurrences of each character
  30. Perform operation on n random distinct elements from Collection using Streams API

Leave a Comment