get Index Of Element from Collection - Android java.util

Android examples for java.util:Collection Find

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Description

get Index Of Element from Collection

Demo Code


//package com.book2s;
import java.util.Collection;

public class Main {
    public static void main(String[] argv) {
        Collection set = java.util.Arrays.asList("asdf", "book2s.com");
        Object child = "book2s.com";
        System.out.println(getIndexOfElement(set, child));
    }//from w  w w .jav a  2  s .  c o  m

    public static <E> int getIndexOfElement(Collection<E> set, Object child) {
        int i = 0;
        for (E e : set) {
            if (e.equals(child)) {
                return i;
            }
            ++i;
        }
        return -1;
    }
}

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