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Vector subList() Method in Java

  • Difficulty Level : Basic
  • Last Updated : 14 Aug, 2018

The java.util.Vector.subList() is used to return a sublist of the existing Vector within a range mentioned in the parameter. The method takes in an upper limit and a lower limit and returns all the elements mentioned in the range. The lower limit is included if the element is present in the list and the upper limit is excluded. Basically, it takes the sublist greater than equal to the lower limit and strictly less than the upper element.

Syntax:

Vector.subList(int low_index, int up_index)

Parameters: The method accepts 2 mandatory parameters:

  • low_index: This is of the integer type and defines the lower limit or the index of the starting element from which the subList is evaluated. This element is included in the sublist.
  • up_index: This is of the integer type and defines the upper limit or the index of the end element till which the subList is evaluated. This element is excluded from the sublist.

Return Value: The method returns a sublist of the Vector type mentioned within the given range of the parameters.

Below programs illustrate the subList() method in Java:
Example 1:






// Java code to illustrate subList() method
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Creating an empty Vector
        Vector<Integer> vec_tor = new Vector<Integer>();
  
        // Adding the elements using add()
        vec_tor.add(5);
        vec_tor.add(1);
        vec_tor.add(50);
        vec_tor.add(10);
        vec_tor.add(20);
        vec_tor.add(6);
        vec_tor.add(20);
        vec_tor.add(18);
        vec_tor.add(9);
        vec_tor.add(30);
  
        System.out.println("The Vector is: " + vec_tor);
  
        // Creating the sublist vector
        List<Integer> sub_list = new ArrayList<Integer>();
  
        // Limiting the values till 5
        sub_list = vec_tor.subList(2, 5);
  
        // Displaying the list data
        System.out.println("The resultant values "
                           + "within the sub list: " + sub_list);
    }
}
Output:
The Vector is: [5, 1, 50, 10, 20, 6, 20, 18, 9, 30]
The resultant values within the sub list: [50, 10, 20]

Example 2:




// Java code to illustrate subList() method
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Creating an empty Vector
        Vector<String> vec_tor = new Vector<String>();
  
        // Adding the elements using add()
        vec_tor.add("Welcome");
        vec_tor.add("To");
        vec_tor.add("Geek");
        vec_tor.add("4");
        vec_tor.add("Geeks");
  
        System.out.println("The Vector is: " + vec_tor);
  
        // Creating the sublist vector
        List<String> sub_list = new ArrayList<String>();
  
        // Limiting the values till 5
        sub_list = vec_tor.subList(1, 5);
  
        // Displaying the list data
        System.out.println("The resultant values "
                           + "within the sub list: " + sub_list);
    }
}
Output:
The Vector is: [Welcome, To, Geek, 4, Geeks]
The resultant values within the sub list: [To, Geek, 4, Geeks]

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