MalformedURLException

Each of the four URL constructors throws a MalformedURLException if the arguments to the constructor refer to a null or unknown protocol. Typically, you want to catch and handle this exception by embedding your URL constructor statements in a try/catch pair, like this:

try {
    URL myURL = new URL(. . .)
} catch (MalformedURLException e) {
    . . .
    // exception handler code here
    . . .
}