Java TreeSet spliterator() Method

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Description

The Java TreeSet spliterator() method is used to get a late-binding and fail-fast Spliterator over the elements in this set.

Declaration

Following is the declaration for java.util.TreeSet.spliterator() method.

 public Splspliterator<E> splspliterator() 

Parameters

NA

Return Value

The method call returns an Spliterator over the elements in this set.

Exception

NA

Getting Spliterator of a TreeSet of Integer Example

The following example shows the usage of Java TreeSet spliterator() method to get a spliterator of elements of the treeset. We've created a TreeSet object of Integer. Few entries are added using add() method and spliterator is retrieved using spliterator() method and then spliterator is iterated to print the elements.

 package com.tutorialspoint; import java.util.Spliterator; import java.util.TreeSet; public class TreeSetDemo { public static void main(String[] args) { // creating a TreeSet TreeSet<Integer> treeset = new TreeSet<>(); // adding in the tree set treeset.add(1); treeset.add(13); treeset.add(17); treeset.add(2); // create ascending spliterator Spliterator<Integer> spliterator = treeset.spliterator(); // displaying the Tree set data System.out.println("Tree set data: "); spliterator.forEachRemaining( i -> System.out.println(i)); } } 

Output

Let us compile and run the above program, this will produce the following result.

 Tree set data: 1 2 13 17 

Getting Spliterator of a TreeSet of String Example

The following example shows the usage of Java TreeSet spliterator() method to get a spliterator of elements of the treeset. We've created a TreeSet object of String. Few entries are added using add() method and spliterator is retrieved using spliterator() method and then spliterator is iterated to print the elements.

 package com.tutorialspoint; import java.util.Spliterator; import java.util.TreeSet; public class TreeSetDemo { public static void main(String[] args) { // creating a TreeSet TreeSet<String> treeset = new TreeSet<>(); // adding in the tree set treeset.add("D"); treeset.add("B"); treeset.add("C"); treeset.add("A"); // create ascending spliterator Spliterator<String> spliterator = treeset.spliterator(); // displaying the Tree set data System.out.println("Tree set data: "); spliterator.forEachRemaining( i -> System.out.println(i)); } } 

Output

Let us compile and run the above program, this will produce the following result.

 Tree set data in ascending order: A B C D 

Getting Spliterator of a TreeSet of Object Example

The following example shows the usage of Java TreeSet spliterator() method to get a spliterator of elements of the treeset. We've created a TreeSet object of Student. Few entries are added using add() method and spliterator is retrieved using spliterator() method and then spliterator is iterated to print the elements.

 package com.tutorialspoint; import java.util.Spliterator; import java.util.TreeSet; public class TreeSetDemo { public static void main(String[] args) { // creating a TreeSet TreeSet<Student>treeset = new TreeSet<>(); // adding in the tree set treeset.add(new Student(2, "Julie")); treeset.add(new Student(1, "Robert")); treeset.add(new Student(3, "Adam")); treeset.add(new Student(4, "Julia")); // create ascending spliterator Spliterator<Student> spliterator = treeset.spliterator(); // displaying the Tree set data System.out.println("Tree set data: "); spliterator.forEachRemaining( i -> System.out.println(i)); } } class Student implements Comparable<Student> { int rollNo; String name; Student(int rollNo, String name){ this.rollNo = rollNo; this.name = name; } @Override public String toString() { return "[ " + this.rollNo + ", " + this.name + " ]"; } @Override public boolean equals(Object obj) { Student s = (Student)obj; return this.rollNo == s.rollNo && this.name.equalsIgnoreCase(s.name); } @Override public int compareTo(Student student) { return this.rollNo - student.rollNo; } } 

Output

Let us compile and run the above program, this will produce the following result.

 Tree set data: [ 1, Robert ] [ 2, Julie ] [ 3, Adam ] [ 4, Julia ]