Java Collections - Collections.indexOfSubList() Examples

[Last Updated: Nov 8, 2025]

Class:

java.util.Collections

Method:

public static int indexOfSubList(List<?> source,
                                 List<?> target)

Returns the starting position of the first occurrence of the specified target list within the specified source list, or -1 if there is no such occurrence.

Examples

package com.logicbig.example.collections;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class IndexOfSubListExample {

    public static void main(String... args) {
        List<Integer> list = Arrays.asList(30, 40);
        List<Integer> list2 = Arrays.asList(10, 20, 30, 40, 50);
        int i = Collections.indexOfSubList(list2, list);
        System.out.println(i);
    }
}

Java Collections - Collections.indexOfSubList() Examples

Class:

Method:

Examples

Output

See Also