Convert Collection to List - Java java.util

Java examples for java.util:Collection to List

Description

Convert Collection to List

Demo Code


//package com.java2s;
import java.util.ArrayList;

import java.util.Collection;
import java.util.List;

public class Main {
    public static <T> List<T> toList(T[] array) {
        if (array == null) {
            return new ArrayList<T>();
        }//from w  ww  . j a  v a  2  s  .c o m

        ArrayList<T> result = new ArrayList<T>();
        for (T item : array) {
            result.add(item);
        }

        return result;
    }

    public static <T> List<T> toList(Collection<T> collection) {
        if (collection == null) {
            return new ArrayList<T>();
        }

        ArrayList<T> result = new ArrayList<T>();
        for (T item : collection) {
            result.add(item);
        }

        return result;
    }
}

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