Could SecureRandom produces predictable random sequence

I hava a SecureRandom generator using SHA1PRNG:

SecureRandom rnd = SecureRandom.getInstance("SHA1PRNG");

Lets assume this rnd generates a sequence of randoms:

R1 , R2, R3, R4...

So my question is: if R1 is known by someone, can he infer the following R2, R3, R4..?? Since PRNG is deterministic algorithm.