Global object that will hold data acroos different Class

Question

Dear all,
I have a funciton like generateRecord(userid,date,seqno). Now I want java to check whether the userid,date,and seqno had been used before. So I dicided to write the following code
public Class UserRecord {
private List userArray = new ArrayList();
public addUserDetail ( UserDetail ud)
{   this.userArray.add(ud);}
Then I want to create a global variable object for the class UserRecord, because I want the object holds the user detail globally, I do that in another class
public Class TestAbc {
static public UserRecord ur;
UserDetail ud;
ur.userArray.add(ud);
Is the above code exist any problem?

Answer 1

Is the above code exist any problem?Did you tried running the program, it has many bugs?