import java.util.LinkedHashMap;
import java.util.Map;
/*
Deep clone example
*/
public class Solution implements Cloneable {
public static void main(String[] args) {
Solution solution = new Solution();
solution.users.put("Hubert", new User(172, "Hubert"));
solution.users.put("Zapp", new User(41, "Zapp"));
try {
Solution clone = (Solution) solution.clone();
System.out.println(solution);
System.out.println(clone);
System.out.println(solution.users);
System.out.println(clone.users);
} catch (CloneNotSupportedException e) {
e.printStackTrace(System.err);
}
}
@Override
public Object clone() throws CloneNotSupportedException {
Solution o = (Solution) super.clone();
//clone users
Map<String, User> newUsers = new LinkedHashMap<>();
for (String key : o.users.keySet()) {
User user = o.users.get(key);
newUsers.put(key, (User) user.clone());
}
o.users = newUsers;
return o;
}
protected Map<String, User> users = new LinkedHashMap<>();
public static class User implements Cloneable {
int age;
String name;
public User(int age, String name) {
this.age = age;
this.name = name;
}
@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
User user = (User) o;
if (age != user.age) {
return false;
}
return name != null ? name.equals(user.name) : user.name == null;
}
@Override
public int hashCode() {
int result = age;
result = 31 * result + (name != null ? name.hashCode() : 0);
return result;
}
}
}
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