jun lee@treeralphFollow BadgesProblem SolvingJava CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillWork Experiencetreeralph has not updated employment details yet.EducationAjou UniversityMathematics, BSLinkstreeralph has not updated links details yet. Skillstreeralph has not updated skills details yet.