He resumed the study, financially supported by his maternal uncle Bishop Juraj Dobrila, at the University of Vienna until graduation in 1900.
During the World War I, Červar was detained by the Austro-Hungarian authorities, first in Ljubljana and then near Graz.
After the war and the dissolution of Austria-Hungary, he returned to Opatija controlled by the Kingdom of Italy, but the Italian authorities expelled him to the newly established Kingdom of Serbs, Croats and Slovenes (later renamed Yugoslavia).
He ran unsuccessfully for the National Assembly in the 1923 Kingdom of Serbs, Croats and Slovenes parliamentary election.
Following the Axis powers invasion of Yugoslavia, Červar was arrested and detained in Isernia until 1943.