How to Remove ArrayList Element in Java

This example will explain how to remove an element from ArrayList using Iterator’s remove method in Java.

Source Code

package com.beginner.examples;

import java.util.ArrayList;
import java.util.Iterator;

public class RemoveElementThroughIterator {

	public static void main(String[] args) {
		
		//create ArrayList.
		ArrayList arrayList = new ArrayList();
		
		arrayList.add("A");
		arrayList.add("B");
		arrayList.add("C");
		arrayList.add("D");
		
		System.out.println("Before removal, ArrayList contains : ");
		for(int i=0; i< arrayList.size(); i++) {
			System.out.println(arrayList.get(i));
		}
		
		/*
		 * remove 2 from ArrayList using Iterator's remove method.
		 */
		Iterator iterator = arrayList.iterator();
		String stringTmp = null;
		while(iterator.hasNext()) {
			stringTmp = (String)iterator.next();
			if(stringTmp.equals("C")) {
				iterator.remove();
				break;
			 }
		}
		
		System.out.println("After removal, ArrayList contains : ");
		for(int i=0; i< arrayList.size(); i++) {
			System.out.println(arrayList.get(i));
		}
	}

}

Output:

Before removal, ArrayList contains : 
A
B
C
D
After removal, ArrayList contains : 
A
B
D

References

Imported packages in Java documentation:

• ArrayList
• Iterator