Did all the justices agree with the final ruling about korematsu vs united state?

No, not all justices agreed with the final ruling in Korematsu v. United States. The Supreme Court's decision in 1944 was a 6-3 ruling, with the majority supporting the government's internment of Japanese Americans during World War II as a wartime necessity. The dissenting justices argued that the decision violated fundamental civil liberties and set a dangerous precedent for racial discrimination.