Syntax error The size() method of Java AbstractCollection class

The size() method of Java AbstractCollection class

The size() method of the AbstractCollection class returns the numbers of elements in the collection. The method returns Integer.MAX_VALUE if the total number of elemnts in the collection exceeds the Interger.MAX_VALUE.

The syntax is as follows:

public abstract int size()

To work with AbstractCollection class in Java, import the following package:

import java.util.AbstractCollection;

The following is an example to implement AbstractCollection size() method in Java:

Example

 Live Demo

import java.util.ArrayList;
import java.util.AbstractCollection;
public class Demo {
   public static void main(String[] args) {
      AbstractCollection<Object> absCollection = new ArrayList<Object>();
      absCollection.add("Laptop");
      absCollection.add("Tablet");
      absCollection.add("Mobile");
      absCollection.add("E-Book Reader");
      absCollection.add("SSD");
      absCollection.add("HDD");
      System.out.println("AbstractCollection = " + absCollection);
      System.out.println("Count of Elements in the AbstractCollection = " + absCollection.size());
      absCollection.remove("Tablet");
      absCollection.remove("SSD");
      System.out.println("Collection after removing some 2 elements = " + absCollection);
      System.out.println("Count of Elements in the updated AbstractCollection = " + absCollection.size());
   }
}

Output

AbstractCollection = [Laptop, Tablet, Mobile, E-Book Reader, SSD, HDD]
Count of Elements in the AbstractCollection = 6
Collection after removing some 2 elements = [Laptop, Mobile, E-Book Reader, HDD]
Count of Elements in the updated AbstractCollection = 4
Updated on: 2019-07-30T22:30:25+05:30

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