Verbs are used to describe actions. The future tense is used to describe actions that are going to happen sometime in the future, although modern German (especially spoken German) tends to use the present tense to express future actions (use the present tense + an adverb expressing the future e.g. morgen, nächsteWoche, in einem Jahr, später, nächstes Wochenende, …)
Future:
Present + “future adverb”
Der Student wird nächstes Jahr seinen Abschlußmachen.
Der Student macht nächstes Jahr seinen Abschluß.
The Student will graduate next year.