The Japan colonial government in Indonesia commence in 8 March 1942 and Japanese colonial government issue the Japanese Army Laws in 8 March Number 1 which states that all laws and regulation from the government of Netherlands Indie shall be continuously applicable as long as not inconsistent with the regulation from the Japanese Army. For the court structure, Japanese Government enact Act Year 1942 Number 14 on the Court Regulation Under the Government of Dai Nippon Army, whereas under this Law, several courts were established, which is actually, continuance from the existing courts.
Sub-District Court, which is continuance from districtsgerecht.
Appellate Court which is continuance from Raad van Justisie.
The Supreme Court, which is continuance from Hooggerechtshof.
The Japanese government era abolish dualism within the Indonesian court system which is by Osamu Seirei 1944 No.2 it was established that Tihoo Hooin is the court for all group of citizen, by using the HIR as procedural code.