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https://www.youtube.com/watch?v=dUpRpkF1Cm8&list=UUhwKlOVR041tngjerWxVccw
TreeSetExample.java
Output
https://www.youtube.com/watch?v=dUpRpkF1Cm8&list=UUhwKlOVR041tngjerWxVccw
TreeSetExample.java
import java.util.TreeSet; /* * Example of TreeSet() Constructor. */ public class TreeSetExample { public static void main( String[] args ) { /* * Constructs a new, empty tree set, sorted according to the natural * ordering of its elements. All elements inserted into the set must * implement the Comparable interface. * * Furthermore, all such elements must be mutually comparable: * e1.compareTo(e2) must not throw a ClassCastException for any elements * e1 and e2 in the set. * * If the user attempts to add an element to the set that violates this * constraint (for example, the user attempts to add a string element to * a set whose elements are integers), the add call will throw a * ClassCastException. */ TreeSet<String> treeSet = new TreeSet<String>(); treeSet.add("B"); treeSet.add("C"); treeSet.add("A"); treeSet.add("D"); treeSet.add("E"); System.out.println("treeSet : " + treeSet + "\n"); } }
treeSet : [A, B, C, D, E]
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoSortAlphabetsAsc.zip?attredirects=0&d=1
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