Java Spliterator getExactSizeIfKnown() Method

The getExactSizeIfKnown() method of Java Interface Spliterator is used to get an estimateSize() of the SIZED spliterator, otherwise returns -1.

Syntax

Following is the declaration of getExactSizeIfKnown() method-

Parameter

This method does not accept any parameter.

Return

The getExactSizeIfKnown() method returns the estimateSize() of the spliterator, if known, otherwise returns -1.

Exceptions

Compatibility Version

Java 1.8 and above

Example 1

import java.util.*;
public class InterfaceSpliteratorGetExactSizeIfKnownExample1 {  
     public static void main(String args[]){
    	   //Create an array list
         ArrayList<Integer> list = new ArrayList<>();             
         //Add values in the list.
         list.add(1001);
         list.add(-2001);
         list.add(3001);
         list.add(-4001);                                                     
         //Getting Spliterator object
         Spliterator<Integer> splitr = list.spliterator(); 
         //Print Estimate Size 
         System.out.println("Estimate size: " + splitr.estimateSize());
         //Print getExactSizeIfKnown 
         System.out.println("Exact size: " + splitr.getExactSizeIfKnown());
         //Printelements of arraylist.              
         System.out.println("Elements of arraylist-- ");     
         while(splitr.tryAdvance((n) -> System.out.println(n)));
         }
}

Output:

Estimate size: 4
Exact size: 4
Elements of arraylist-- 
1001
-2001
3001
-4001

Example 2

import java.util.*;
public class InterfaceSpliteratorGetExactSizeIfKnownExample2 {  
    public static void main(String args[]){
   	    List<String> nameList = Arrays.asList("Rahul", "Nikki", "Prem");
   	    Spliterator<String> splitr = nameList.spliterator();
   	    //splitr.tryAdvance(System.out::println);
   	    System.out.println("Exact size before getting List elements: " +splitr.getExactSizeIfKnown());
   	    splitr.forEachRemaining(System.out::println);
   	    //Print getExactSizeIfKnown 
          System.out.println("Exact size after getting List elements: " + splitr.getExactSizeIfKnown());   	
          }
}

Output:

Exact size before getting List elements: 3
Rahul
Nikki
Prem
Exact size after getting List elements: 0

Next TopicJava-spliterator-hascharacteristics-method

← prev next →

We provides tutorials and interview questions of all technology like java tutorial, android, java frameworks

Contact info

G-13, 2nd Floor, Sec-3, Noida, UP, 201301, India

[email protected].

Java Spliterator getExactSizeIfKnown() Method

Syntax

Parameter

Return

Exceptions

Compatibility Version

Example 1

Example 2

Learn Important Tutorial

B.Tech / MCA

Preparation

Contact info

Follow us

Tutorials

Interview Questions

Online Compiler

Python

AI, ML and Data Science

Java

B.Tech and MCA

Web Technology

Software Testing

Technical Interview

Java Interview

Web Interview

Database Interview

Company Interviews

Java Tutorial

Control Statements

Java Object Class

Java Inheritance

Java Polymorphism

Java Abstraction

Java Encapsulation

Java Array

Java OOPs Misc

Java String

Java String Methods

Java Regex

Exception Handling

Java Inner Class

Java Multithreading

Java Synchronization

Java Networking

Java Applet

Java Reflection

Java Conversion

Java JDBC

RMI

Internationalization

Java Array Class

Java AtomicInteger Class

Java AtomicLong Methods

Java Authenticator

Java BigDecimal class

Big Integer Class

Java Boolean class

Java Byte Class

Java Class

Java Collections class

Java Compiler Class

CopyOnWriteArrayList

Java Math Methods

LinkedBlockingDeque

Java Long class

LinkedTransferQueue

Java List

Java MulticastSocket

Java Number Class

Java Phaser Class

ArrayList Methods

Java Thread Methods

Java Projects

Java Programs

Java Misc

Java Date Class

Java ListIterator Class

Java NIO Tutorial

HttpURLConnection

Java Deque

Java HttpCookie Class

Java URL class

Java List Methods

Java Vector class

Java Collection Methods

Java Socket Class

Java Executors

Java Integer Class

Java IdentityHashMap

Java ArrayBlockingQueue

Java Timestamp

Java Spliterator

Java Bitset

Java Instant

Java Spliterator getExactSizeIfKnown() Method

Syntax