  The quasiparticles energy spectrum in clean ferromagnetic weak links between
conventional superconductors is calculated. Large peaks in DOS, due to a
special case of Andreev reflection at the ferromagnetic barrier, correspond to
spin-splitt bound states. Their energies are obtained as a function of the
barrier thickness, exchange field strength, and of the macroscopic phase
difference $\phi$ at the link, related to the Josephson current. In the ground
state, $\phi$ can be 0 or $\pi$, depending on the ferromagnetic barrier
influence. Conditions for the appearence of the zero-energy bound states (ZES)
and for the spin polarized ground state (SPGS) are obtained analytically. It is
shown that ZES appear only outside the weak link ground state.
