In Judo, improvement and understanding of the art is denoted by a system of ranks split into kyū and dan grades. These are indicated with various systems of coloured belts, with the black belt indicating a practitioner who has attained a certain level of competence. (Wikipedia)

Kodokan divides Judo in 68 techniques: Click here to view the list of Kodokan techniques

The Malta Judo Federation acknowledges the following grading system with the minimum age limits:
MJF Badge_yellow Yellow / Orange / Green / Blue / Brown Badge: 4 – 6 years

White Belt Black Badge Belt / White Belt – 6 years
White Yellow Belt White Yellow Belt – 7 years
Yellow Belt Yellow Belt – 8 years
Yellow Orange Yellow Orange Belt – 9 years
Orange Belt Orange Belt – 10 years
Orange Green Belt Orange Green Belt – 11 years
Green Belt Green Belt – 12 years
Blue Belt Blue Belt – 13 years
Brown Belt.pngBrown Belt – 14 years
Black Belt Black Belt – 16 years

Downloads available:
MJF Grading Syllabus
Grading Application Form
Black Belt Application Form