Java Collections lastIndexOfSubList() Method with Examples

by Online Tutorials Library July 22, 2022

Java Collections lastIndexOfSubList() Method

The lastIndexOfSubList() method of Java Collections class is used to get the starting position of the last occurrence of the specified target list within the specified source list. It returns -1 if there is no such occurrence in the specified list.

Syntax

Following is the declaration of lastIndexOfSubList() method:

Parameter

Parameter	Description	Required/Optional
source	It is the list in which we search for the last occurrence of target.	Required
target	It is the list to search for as a subList of source.	Required

Returns

The lastIndexOfSubList() method returns the starting position of the last occurrence of the specified target list within the specified source list, or -1 if there is no such occurrence.

Exceptions

Compatibility Version

Java 1.4 and above

Example 1

  import java.util.*;  public class CollectionsLastIndexOfSubListExample1 {  public static void main(String[] args) {  //Create Source array list objects               List srclist = new ArrayList<>();        //Add elements in the list        srclist.add(“A”);        srclist.add(“B”);        srclist.add(“C”);        srclist.add(“D”);        srclist.add(“E”);         //Create Target array list objects         List targetlist = new ArrayList<>();        //Add elements in the list        targetlist.add(“C”);        targetlist.add(“D”);        targetlist.add(“E”);        //Check target list in source list        int index = Collections.lastIndexOfSubList(srclist, targetlist);        System.out.println(“Target Output: “+index);         }    }  

Test it Now

Output:

Target Output: 2

Example 2

  import java.util.*;  public class CollectionsLastIndexOfSubListExample2 {  public static void main(String[] args) {        //Create lists for source and destination            List source = Arrays.asList(1,2,3);        List target = Arrays.asList(4,5,6,7,8);        //Check target list in source list        int index = Collections.lastIndexOfSubList(target, source);  System.out.println(“Target Output: “+index);            }    }  

Test it Now

Output:

Target Output: -1

Example 3

  import java.util.*;  public class CollectionsLastIndexOfSubListExample3 {  public static void main(String[] args) {     //Creating array list with values     List l1 = Arrays.asList(“kitu mani raj karthi rahul gagan”.split(” “));     //Printing array list          System.out.println(“List :” + l1);          //Sublist which we need IndexOf          List sublist = Arrays.asList(“karthi rahul”.split(” “));                                                                 Integer Index = Collections.lastIndexOfSubList(l1, sublist);                                                                            //Printing Last IndexOfSublist          System.out.println(“Last IndexOfSubList: ” +Index);                                                               }    }  

Test it Now

Output:

List :[kitu, mani, raj, karthi, rahul, gagan]  Last IndexOfSubList: 3

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Java Collections lastIndexOfSubList() Method with Examples

Java Collections lastIndexOfSubList() Method

Syntax

Parameter

Returns

Exceptions

Compatibility Version

Example 1

Example 2

Example 3

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