  This paper considers the spherically symmetric gravitational collapse in the
background of Chaplygin gas as dark energy component. The dark energy is
assumed to be generalized and modified Chaplygin gas. The exterior of the star
is considered to be Schwarzschild de-sitter/anti-de sitter metric and discusses
the junction conditions. We have discussed the singularity formation in both
forms of chaplygin gas case and it is obtained that such collapsing fluids
favor the formation of black-hole.
