guava Splitterとjava内蔵stringのsplit方法の違いは何ですか.

JAvaに内蔵されているものは空の内容を無視し、guava Splitterは無視しません.あるいは自由に選択する無視することができる.

/**
 * {@code Splitter} {@code Joiner}      map      ， web    spring mvc    ．
 * 
 *   get　url      pos　form                  ．             ．
 * 
 * @author doctor
 *
 * @since 2015 3 14    9:00:17
 */
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　　@Test
    public void test_string_split() {
        String[] split = "a,b,,".split(","); // java         
        assertThat(split, equalTo(Lists.newArrayList("a", "b").toArray()));
    }

    @Test
    public void test_guava_Splitter() {
        List<String> splitToList = Splitter.on(",").splitToList("a,b,,");//guava    

        assertThat(splitToList, equalTo(Lists.newArrayList("a", "b", "", "")));
    }

　@Test
    public void test_guava_Splitter_omitEmptyStrings() {
        //            　， java  ，      
        List<String> splitToList = Splitter.on(",").omitEmptyStrings().trimResults().splitToList("a,b,,");

        assertThat(splitToList, equalTo(Lists.newArrayList("a", "b")));
    }