Java Vector subList() Method

The subList() method of Java Vector class is used to get a view of the portion of the list between fromIndex, inclusive, and toIndex, exclusive. If fromIndex and toIndex are equal, the returned List is empty.

Syntax

Following is the declaration of subList() method:

Parameter

Parameter	Description	Required/Optional
fromIndex	It is the low endpoint (inclusive) of the subList.	Required
toIndex	It is the high endpoint (inclusive) of the subList.	Required

Return

The subList() method returns a view of the specified range within the list.

Exceptions

ArrayIndexOutOfBoundsException- This method has thrown an exception if an endpoint index value is out of range i.e. (fromIndex < 0 || toIndex > size()).

IllegalArgumentException- This method has thrown an exception if the endpoint indices are out of order, i.e. (fromIndex > toIndex).

Compatibility Version

Java 1.2 and above

Example 1

import java.util.*;
public class VectorSubListExample1 {  
	public static void main(String arg[]) {	
	    //Create an empty vector 
	    Vector<Integer> vec = new Vector<>();
	    //Add elements in the vector
	    vec.add(1);
	    vec.add(2);
	    vec.add(3);
	    vec.add(4);
	    vec.add(5);
	    vec.add(6);
	    vec.add(7);
	    vec.add(8);	    
	    //Display the vector elements 
	    System.out.println("The vector elements are: "+vec);
	    //Use subList() method to get subList of the vector
          List<Integer> subList = vec.subList(2,6);  
          //Display sublist vector elements
          System.out.println("Sublist elements: ");
          for(int i=0; i < subList.size() ; i++){
             System.out.println(subList.get(i));
          }               
       }
}

Test it Now

Output:

The vector elements are: [1, 2, 3, 4, 5, 6, 7, 8]
Sublist elements: 
3
4
5
6

Example 2

import java.util.*;
public class VectorSubListExample2 {  
	public static void main(String arg[]) {	
	    //Create an empty vector
	    Vector < String > vec = new Vector < String > ();
	    //Add elements in the vector
	    vec.add("White");
	    vec.add("Green");
	    vec.add("Black");
	    vec.add("Orange");
	    vec.add("Yellow");
	    vec.add("Pink");
	    //Display the vector elements 
	    System.out.println("The vector elements are: "+vec);
	    //Use subList() method to get subList of the vector
          List<String> subList = vec.subList(1,5);  
          //Display sublist vector list
          System.out.println("Sublist elements :"+subList);                      
          }
}

Test it Now

Output:

The vector elements are: [White, Green, Black, Orange, Yellow, Pink]
Sublist elements :[Green, Black, Orange, Yellow]

Example 3

import java.util.*;
public class VectorSubListExample3 {  
	public static void main(String arg[]) {	
	    //Create an empty vector 
	    Vector<Integer> vec = new Vector<>();
	    //Add elements in the vector
	    vec.add(10);
	    vec.add(20);
	    vec.add(30);	  
	    //Use subList() method to get subList of the vector
          List<Integer> subList = vec.subList(6,2);  
          //Display sublist vector list
          System.out.println("Sublist elements :"+subList);                     
          }
}

Test it Now

Output:

Exception in thread "main" java.lang.IllegalArgumentException: fromIndex(6) > toIndex(2)
	at java.base/java.util.AbstractList.subListRangeCheck(AbstractList.java:509)
	at java.base/java.util.AbstractList.subList(AbstractList.java:497)
	at java.base/java.util.Vector.subList(Vector.java:1152)
	at myPackage.VectorSubListExample3.main(VectorSubListExample3.java:12)

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