parallelism package sec12_parallelism; public class Student { public enum Sex{MALE,FEMALE} public enum City{Seoul,Pusan} private String name; private int score; private Sex sex; private City city; public Student(String name, int score, Sex sex) { this.name = name; this.score = score; this.sex = sex; } public Student(String name, int score, Sex sex, City city) { this.name = name; this.score = sco..