Why does the nullprintstream() function in Java / Lang / system compare currenttimemillis() to zero?

• Java

When loading the system class, the < clinit > method instantiates the in, out and err printstream variables with the nullprintstream() method, and the printstream variables are null:

private static PrintStream nullPrintStream() throws NullPointerException {
    if (currentTimeMillis() > 0) {
        return null;
    }
    throw new NullPointerException();
}

Solution

The Javadoc of the nullprintstream() method provides a clue:

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