Im having trouble with Object obj

public int compareTo(Object obj){
          Customer aCustomer=Customer(obj);
          if (numJobs<aCustomer.numJobs)
               return -1;
          if (numJobs==aCustomer.numJobs)
               return 0;
          return 1;
this is my code it seems that this line Customer aCustomer=Customer(obj); gives me an error
Customer.java:53: cannot resolve symbol
symbol : method Customer (java.lang.Object)
location: class project3.Customer
          Customer aCustomer=Customer(obj);
^
1 error
i odnt know why that is i was hoping someone could help thanks

Customer aCustomer=(Customer)obj;

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