For this reason, the concept of codification is the end or goal of the civil law system. The civil law system, when compared to the common law system in terms of written sources, is certainly clearer and easier. For this reason, it is not surprising that judges in countries that adhere to the civil law system, in deciding a case, look more at written law or laws and regulations.

Judges are not bound by a case that has been decided as adopted in the common law system. Judges are given the freedom to decide a case without being bound by previous judges' decisions. Judges are only bound by written rules, namely laws and regulations.

Common Law System

Basically, the common law system is adopted by Anglo-Saxon countries. This system has a very large difference from the civil law system. According to Satjipto Rahardjo (1996: 245), the striking difference between the two civil law and common law systems is that the common law system emphasizes the traditional characteristics of the law. Meanwhile, the civil law system emphasizes its logical and rational characteristics.

In some existing literature, the main features of the common law system are: First, recognition of the supremacy of law. Second, recognition of equality before the law. Third, protection of individual or personal rights.

Apart from what has been described above, a prominent feature of the common law system is that it is more based on procedures in resolving each dispute. This condition creates the absence of terms between private law and public law.

In the judicial process, judges who adhere to the common law system are more likely to follow decisions that have been decided in the same case. According to Peter Mahmud Mardzuki (2009: 194), the common law system basically has three characteristics, namely: First, jurisprudence is seen as the main source of law. Second, judges are bound by what is called stare decisis which means that judges are bound to apply decisions decided by previous courts in similar cases. Third, the existence of an adversary system in the judicial process.

The interesting thing about the common law system is that the judge who examines the case acts as if he were a referee. This is because the parties in the case are allowed to collect as much evidence as possible in court, and the judge only assesses what evidence is submitted. Furthermore, the judge hands over the decision to the jury. G. Socialist Legal System Basically, the socialist legal system initially developed from a country formerly called the Union of Soviet Socialist Republics, which we now know as Russia, namely a country that adheres to communist ideology.