Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.Collection;

import java.util.Iterator;

import java.util.Map;

public class Main {
    /**
     * Removes all the given keys from the given map.
     *
     * @param <TKey> The type of the keys of the map.
     * @param <TValue> The types of the values of the map.
     * @param target The map to remove the specified keys from.
     * @param keys An iterable providing the keys to be removed.
     * @note In case the target or the keys are not effective, nothing happens.
     */
    public static <TKey, TValue> void removeAll(final Map<TKey, TValue> target,
            final Iterable<? extends TKey> keys) {
        if (keys != null) {
            removeAll(target, keys.iterator());
        }
    }

    /**
     * Removes all the given keys from the given map.
     *
     * @param <TKey> The type of the keys of the map.
     * @param <TValue> The types of the values of the map.
     * @param target The map to remove the specified keys from.
     * @param keys An iterator providing the keys to be removed.
     * @note In case the target or the keys are not effective, nothing happens.
     */
    public static <TKey, TValue> void removeAll(final Map<TKey, TValue> target,
            final Iterator<? extends TKey> keys) {
        if (target != null && keys != null) {
            while (keys.hasNext()) {
                target.remove(keys.next());
            }
        }
    }

    /**
     * Removes all the given keys from the given map and adds their
     * corresponding values to the given collection.
     *
     * @param <TKey> The type of the keys of the map.
     * @param <TValue> The types of the values of the map.
     * @param target The map to remove the specified keys from.
     * @param keys An iterable providing the keys to be removed.
     * @param values A collection where the values corresponding to the given
     * keys are added.
     * @note In case the target or the keys are not effective, nothing happens.
     * @note In case values is not effective, the keys are removed without
     * adding them.
     */
    public static <TKey, TValue> void removeAll(final Map<TKey, TValue> target, final Iterable<? extends TKey> keys,
            Collection<? super TValue> values) {
        if (keys != null) {
            removeAll(target, keys.iterator(), values);
        }
    }

    /**
     * Removes all the given keys from the given map and adds their
     * corresponding values to the given collection.
     *
     * @param <TKey> The type of the keys of the map.
     * @param <TValue> The types of the values of the map.
     * @param target The map to remove the specified keys from.
     * @param keys An iterator providing the keys to be removed.
     * @param values A collection where the values corresponding to the given
     * keys are added.
     * @note In case the target or the keys are not effective, nothing happens.
     * @note In case values is not effective, the keys are removed without
     * adding them.
     */
    public static <TKey, TValue> void removeAll(final Map<TKey, TValue> target, final Iterator<? extends TKey> keys,
            Collection<? super TValue> values) {
        if (values != null) {
            if (target != null && keys != null) {
                while (keys.hasNext()) {
                    values.add(target.remove(keys.next()));
                }
            }
        } else {
            removeAll(target, keys);
        }
    }
}