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`String.split(String)` and `Pattern.split(CharSequence)` have surprising
behaviour. For example, consider the following puzzler from
http://konigsberg.blogspot.com/2009/11/final-thoughts-java-puzzler-splitting.html:
```java
String[] nothing = "".split(":");
String[] bunchOfNothing = ":".split(":");
```
The result is `[""]` and `[]`!
More examples:
input | `input.split(":")` | `Pattern.compile(":").split(input)` | `Splitter.on(':').split(input)`
-------- | ------------------- | ----------------------------------- | -------------------------------
`""` | `[""]` | `[""]` | `[""]`
`":"` | `[]` | `[]` | `["", ""]`
`":::"` | `[]` | `[]` | `["", "", "", ""]`
`"a:::"` | `["a"]` | `["a"]` | `["a", "", "", ""]`
`":::b"` | `["", "", "", "b"]` | `["", "", "", "b"]` | `["", "", "", "b"]`
Prefer either:
* Guava's
[`Splitter`](https://guava.dev/releases/23.0/api/docs/com/google/common/base/Splitter.html),
which has less surprising behaviour and provides explicit control over the
handling of empty strings and the trimming of whitespace with `trimResults`
and `omitEmptyStrings`.
* [`String.split(String, int)`](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html#split\(java.lang.String,int\))
or
[`Pattern.split(CharSequence, int)`](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html#split\(java.lang.String,int\))
and setting an explicit 'limit' to `-1` to match the behaviour of
`Splitter`.
TIP: if you use `Splitter`, consider extracting the instance to a `static`
`final` field.
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