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Java ArrayList removeRange() Method with Example

ArrayList Class removeRange() method: Here, we are going to learn about the removeRange() method of ArrayList Class with its syntax and example.
Submitted by Preeti Jain, on January 19, 2020

ArrayList Class removeRange() method

• removeRange() method is available in java.util package.
• removeRange() method is used to remove the elements whose range is between st_in(start index) and en_in(end index) of this Arraylist. Here, st_in(inclusive) & en_in(exclusive).
• removeRange() method is a non-static method so it is accessible with the class object and if we try to access the method with the class name then we will get an error.
• removeRange() method may throw an exception at the time of removing elements within the given range.
  IndexOutOfBoundsException: This exception may throw when the given range does not exist.

Syntax:

    public void removeRange(int st_in, int end_in);

Parameter(s):

• int st_in – represent the index of starting element to remove.
• int en_in – represents the index of ending element to remove.

Return value:

The return type of this method is void, it returns nothing.

Example:

// Java program to demonstrate the example 
// of void removeRange() method of ArrayList

import java.util.*;

public class RemoveRangeOfArrayList extends ArrayList {
    public static void main(String[] args) {
        // Create an ArrayList with initial 
        // capacity of storing elements

        RemoveRangeOfArrayList arr_l = new RemoveRangeOfArrayList();

        // By using add() method is to add 
        // elements in this ArrayList
        arr_l.add("C");
        arr_l.add("C++");
        arr_l.add("JAVA");
        arr_l.add("DOTNET");
        arr_l.add("PHP");

        // Display ArrayList
        System.out.println("ArrayList Elements :" + arr_l);

        // By using removeRange() method is to remove the 
        // element at index 2 and 3 like JAVA , DOTNET
        arr_l.removeRange(2, 4);

        // Display ArrayList 
        System.out.println("arr_l.removeRange(2,4) : " + arr_l);
    }
}

Output

ArrayList Elements :[C, C++, JAVA, DOTNET, PHP]
arr_l.removeRange(2,4) : [C, C++, PHP]