Java.util.ArrayList.remove() Method

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Description

The java.util.ArrayList.remove(int index) method removes the element at the specified position in this list. Shifts any subsequent elements to the left (subtracts one from their indices).

Declaration

Following is the declaration for java.util.ArrayList.remove() method

public E remove(int index)

Parameters

  • index -- The index of the element to be removed .

Return Value

This method returns the element that was removed from the list .

Exception

  • IndexOutOfBoundsException -- if the index is out of range.

Example

The following example shows the usage of java.util.ArrayList.remove(index) method.

package com.tutorialspoint;

import java.util.ArrayList;

public class ArrayListDemo {
   public static void main(String[] args) {
      
    // create an empty array list with an initial capacity
    ArrayList<Integer> arrlist = new ArrayList<Integer>(5);

    // use add() method to add elements in the deque
    arrlist.add(20);
    arrlist.add(15);
    arrlist.add(30);
    arrlist.add(45);

    System.out.println("Size of list: " + arrlist.size());
	
    // let us print all the elements available in list
    for (Integer number : arrlist) {
      System.out.println("Number = " + number);
    }  
	
    // Removes element at 3rd position
    arrlist.remove(2);

    System.out.println("Now, Size of list: " + arrlist.size());
	
    // let us print all the elements available in list
    for (Integer number : arrlist) {
      System.out.println("Number = " + number);
    }
  }
}   

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

Size of list: 4
Number = 20
Number = 15
Number = 30
Number = 45
Now, Size of list: 3
Number = 20
Number = 15
Number = 45



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