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//Create a Person object and set the desired values. 
Person person = new Person();
person.setFirstName("John");
person.setLastName("Doe");
person.setBirthYear(1975);
person.setCitizen(true);

//Insert the person. ID is automatically generated. You can also set your 
//own ID if auto generation is not needed. 
person = em.insert(person);
System.out.printf("person with ID %d created successfully", person.getId());