Top "Treeset" questions

Why does TreeSet throw a ClassCastException?

I am trying to add two 'Employee' objects to a TreeSet: Set<Employee> s = new TreeSet<Employee&…

java exception collections set treeset

Difference between NavigableSet, SortedSet and TreeSet in Java

A TreeSet puts an element in natural ordering or by the provided comparator. A SortedSet is also keeps the element …

java set treeset sortedset

A TreeSet or TreeMap that allow duplicates

I need a Collection that sorts the element, but does not removes the duplicates. I have gone for a TreeSet, …

java collections treemap treeset

Java's TreeSet equivalent in Python?

I recently came across some Java code that simply put some strings into a Java TreeSet, implemented a distance based …

java python data-structures treeset

maintaining TreeSet sort as object changes value

I've got a object that defines a 'natural sort order' using Comparable<>. These are being stored in TreeSets. …

java collections refresh treeset sortedset

Comparator and equals()

Suppose I need TreeSet with elements sorted with some domain logic. By this logic it doesn't matter order of some …

java equals comparator treeset

Computational complexity of TreeSet operations in Java?

I am trying to clear up some things regarding complexity in some of the operations of TreeSet. On the javadoc …

java complexity-theory red-black-tree treeset

Java - Most efficient way to convert a TreeSet<String> into a String[]?

I was doing this: (String[]) myTreeSet.toArray(); but that gives me a ClassCastException at runtime. The only thing I can …

java arrays string treeset

What are the pros and cons of a TreeSet

Just wondering what the pros and cons of a TreeSet is, if anyone could tell me please? Thanks!

java data-structures treeset

TreeSet internally uses TreeMap, so is it required to implement Hashcode method when using Treeset?

I would like to know what it means when javadocs for TreeSet says This class implements the Set interface, backed …

java collections hashcode treemap treeset