subtract one Collection from another Collection - Android java.util

Android examples for java.util:Collection

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Description

subtract one Collection from another Collection

Demo Code


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

public class Main {
    public static void main(String[] argv) {
        Collection l1 = java.util.Arrays.asList("asdf", "book2s.com");
        Collection l2 = java.util.Arrays.asList("asdf", "book2s.com");
        System.out.println(subtract(l1, l2));
    }// w  w w .  ja v a 2  s .  com

    public static <T> ArrayList<T> subtract(Collection<T> l1,
            Collection<T> l2) {
        ArrayList<T> al = new ArrayList<T>();
        al.addAll(l1);
        for (T item : l2) {
            al.remove(item);
        }
        return al;
    }
}

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