Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.util.*;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class Main {
    /**
     * Recursively iterate the given {@link Collection} and all {@link Collection}s within it. When an element is encountered that equals
     * the given {@link Object}, the method returns {@code true}.
     *
     * @param collection The collection to iterate recursively.
     * @param o          The object to look for in the collection.
     *
     * @return {@code true} if the object was found anywhere within the collection or any of its sub-collections.
     */
    public static boolean recurseContains(@Nonnull final Iterable<?> collection, @Nullable final Object o) {

        for (final Object co : collection)
            if (co.equals(o) || co instanceof Collection<?> && recurseContains((Iterable<?>) co, o))
                return true;

        return false;
    }
}