Java ArrayList removeRange() method

The removeRange() method of Java ArrayList class removes all elements whose index lies between fromIndex -inclusive- and toIndex -exclusive, shifts an elements to the left and reduce their index.

If (fromIndex == toIndex) nothing will happen.

Syntax:

Parameter:

fromIndex: is the index of element to be removed.

toIndex: is the index after last the element to be removed.

Return:

Nothing.

Exception:

java.lang.IndexOutOfBoundsException: If fromIndex or toIndex is out of range.

Example 1

import java.util.ArrayList;
public class ArrayListRemoveRangeExample1
{
ArrayList<String> letters = new ArrayList<>();
letters.add("A");
letters.add("B");
letters.add("C");
letters.add("D");	        // indexes: 0,  1,  2, 3 
System.out.println(letters);	// [A, B, C, D]
letters.removeRange(1, 3);
System.out.println(letters);	// [A, D]
letters.add("X");
letters.add("Y");
letters.add("Z");	        // indexes: 0,  1,  2,  3, 4 
System.out.println(letters);	// [A, D, X, Y, Z]
letters.removeRange(0, 2);
System.out.println(letters);	// [X, Y, Z]
}

Test it Now

Output:

[A, B, C, D]
[A, D]
[A, D, X, Y, Z]
[X, Y, Z]

Example 2

import java.util.ArrayList;
public class ArrayListRemoveRangeExample2
{
ArrayList<String> letters = new ArrayList<>();
letters.add("A");
letters.add("B");
letters.add("C");
letters.add("D");	        // indexes: 0,  1,  2, 3 
System.out.println(letters);	// [A, B, C, D]
letters.removeRange(0, 5);	// throw  IndexOutOfBoundsException
}

Test it Now

Output: