Java ArrayList removeRange() method with Examples

by Online Tutorials Library July 22, 2022

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:

[A, B, C, D]

Next TopicJava ArrayList

add()addAll()arraylist clear()clone()contains()ensureCapacity()get indexOf()isempty()iterator java lastIndexOf()ListIterator remove removeall subList()toArray()trimToSize()