Explain how Emperor Justinian adapted Roman law for use by the Byzantines.

The way Emperor Justinian adapted Roman law for use by the Byzantines:

The Corpus Juris Civilis, also known as Justinian Code in Renaissance, was commissioned by Justinian.

The Corpus Juris Civilis had four parts:

The Codex collected a selection of colonial statutes dating back to those days of Hadrian. The Digesta had been an anthology of 50 novels of fragments and journals by the most influential scholars of Roman history. These writings have been private thoughts. The institutions consisted of four pupil textbooks which, compared to the other two parts, introduced lawful conceptual aspects in a less developed way. The Novellae was a series of laws enacted by Justinian from the printing of the Corpus to his demise.

The research aimed at reorganizing the judicial system of the Empire that has become dysfunctional over time, at opposing obsolete laws and those that have been abolished, and at changing the ambiguous passages.

At its release in 529, the first was redundant because it covered acts already redundant and it didn't contain acts published in the meanwhile. This version has already been destroyed. The second book was published in 534.