```
String address = "192.168.1.1";

```

I want to split the address and the delimiter is the point.
So I used this code:

```
String [] split = address.split(".");

```

But it didn't work, when I used this code it works:

```
String [] split = address.split("\\.");

```

so why splitting the dot in IPv4 address is done like this : `("\\.")` ?