Java Vector subList() Method with Example

Vector Class subList() method: Here, we are going to learn about the subList() method of Vector Class with its syntax and example.
Submitted by Preeti Jain, on March 20, 2020

Vector Class subList() method

subList() method is available in java.util package.
subList() method is used to return a set of sublist [it returns all those elements exists in a given range starting index (st_index) and ending index (en_index) and here st_index is inclusive whereas en_index is exclusive].
subList() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
subList() method may throw an exception at the time of returning sublist.
- IndexOutOfBoundsException: This exception may throw when the second parameter is not in a range.
- IllegalArgumentException: This exception may throw when the second argument is not valid.

Syntax:

    public List subList(int st_index, int en_index);

Parameter(s):

int st_index – represents the starting position of the returned sublist.
int en_index – represents the ending position of the returned sublist.

Return value:

The return type of the method is List, it returns all the element in a given range and elements are viewed in a List.

Example:

// Java program to demonstrate the example 
// of List subList(int st_index, int en_index)
// method of Vector 

import java.util.*;

public class SubListOfVector {
 public static void main(String[] args) {
  // Instantiates a Vector object  with
  // initial capacity of "10"
  Vector < String > v = new Vector < String > (10);
  List arr_l = new ArrayList();

  // By using add() method is to add the
  // elements in this v
  v.add("C");
  v.add("C++");
  v.add("JAVA");

  // By using add() method is to add the
  // elements in this arr_l
  arr_l.add("SFDC");

  // Display Vector and ArrayList
  System.out.println("v: " + v);
  System.out.println("arr_l: " + arr_l);

  // By using subList() method is to
  // return the sublist, starting at one
  // endpoint and ending at other endpoint
  arr_l = v.subList(0, 2);

  // Display updated arr_l
  System.out.println("v.subList(0,2): " + arr_l);
 }
}

Output

v: [C, C++, JAVA]
arr_l: [SFDC]
v.subList(0,2): [C, C++]

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