The purpose of this study is to evaluate the safety and tolerability and pharmacokinetics of JNJ61803534 in healthy participants after administration of single ascending oral doses of JNJ-61803534 (Part 1) and multiple ascending oral doses of JNJ-61803534, administered for 14 consecutive days (Part 2) as well as the potential of JNJ-61803534 to interact with other drugs (Part 3).