Q:

Java program to remove all elements from an ArrayList

belongs to collection: Java ArrayList Programs

mahmoud2506
Save to bookmark
|
2022-05-07
|
  367 
0

Given an ArrayList, and we have to remove/clear all elements using Java program.

ArrayList.clear()

This method is used to clear/remove all elements from an ArrayList.

In this program, we have 5 elements which have been added in the ArrayList, the elements are 100, 200, 300, 400 and 500. So, total numbers of elements are 5 and after removing all the elements ArrayList, total number of elements will be 0.

 

Java programming, exam questions, Java programming exam-questions,
login and add your own answer to this question

All Answers

mahmoud2506
2022-05-07
need an explanation for this answer? contact us directly to get an explanation for this answer

Consider the program

import java.util.ArrayList;

public class RemoveAllElements{
	public static void main(String []args){
		//ArrayList object
		ArrayList arrList = new ArrayList();

		//Add elements to Arraylist
		arrList.add("100");
		arrList.add("200");
		arrList.add("300");
		arrList.add("400");
		arrList.add("500");

		System.out.println("Total number of elements in ArrayList: "
			+ arrList.size());
		//remove all elements using clear() method
		arrList.clear();
		System.out.println("Total number of elements in ArrayList: "
			+ arrList.size());
	}
}

Output

Total number of elements in ArrayList: 5
Total number of elements in ArrayList: 0

 

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

Java ArrayList Programs
This question belongs to these collections

Similar questions

need a help?

find thousands of online teachers now
Java program to create a sub list from an ArrayLis... >>
<< Java program to remove elements from specific inde...