Creating a Deep Copy : Clone « Class « Java

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Java » Class » CloneScreenshots 
Creating a Deep Copy
     

public class MainClass {
  public static void main(String[] args) {
    Employee emp1 = new Employee("M""A");
    emp1.setSalary(40000.0);
    emp1.address = new Address("First Street""San F""CA""93702");
    Employee emp2 = (Employeeemp1.clone();
    printEmployee(emp1);
    printEmployee(emp2);

    emp2.setLastName("Smith");
    emp2.address = new Address("Street""B""CA""93722");

    printEmployee(emp1);
    printEmployee(emp2);

  }

  private static void printEmployee(Employee e) {
    System.out.println(e.getFirstName() " " + e.getLastName());
    System.out.println(e.address.getAddress());
    System.out.println("Salary: " + e.getSalary());
  }
}

class Employee implements Cloneable {
  private String lastName;

  private String firstName;

  private Double salary;

  public Address address;

  public Employee(String lastName, String firstName) {
    this.lastName = lastName;
    this.firstName = firstName;
    this.address = new Address();
  }

  public String getLastName() {
    return this.lastName;
  }

  public void setLastName(String lastName) {
    this.lastName = lastName;
  }

  public String getFirstName() {
    return this.firstName;
  }

  public void setFirstName(String firstName) {
    this.firstName = firstName;
  }

  public Double getSalary() {
    return this.salary;
  }

  public void setSalary(Double salary) {
    this.salary = salary;

  }

  public Object clone() {
    Employee emp;
    try {
      emp = (Employeesuper.clone();
      emp.address = (Addressaddress.clone();
    catch (CloneNotSupportedException e) {
      return null// will never happen
    }
    return emp;
  }

  public String toString() {
    return this.getClass().getName() "[" this.firstName + " " this.lastName + ", "
        this.salary + "]";
  }
}

class Address implements Cloneable {
  private String street;

  private String city;

  private String state;

  private String zipCode;

  public Address() {
    this.street = "";
    this.city = "";
    this.state = "";
    this.zipCode = "";
  }

  public Address(String street, String city, String state, String zipCode) {
    this.street = street;
    this.city = city;
    this.state = state;
    this.zipCode = zipCode;
  }

  public Object clone(){
    try {
      return super.clone();
    catch (CloneNotSupportedException e) {
      return null// will never happen
    }
  }

  public String getAddress() {
    return this.street + "\n" this.city + ", " this.state + " " this.zipCode;
  }
}

   
    
    
    
  
Related examples in the same category
1. A Cloning Example
2. Class is declared to be cloneable.
3. Arrays are automatically cloneable
4. Clone objects
5. Shallow Copy TestShallow Copy Test
6. Deep Copy TestDeep Copy Test
7. Uses serialization to perform deep copy cloning.
8. Tests cloning to see if destination of references are also clonedTests cloning to see if destination of references are also cloned
9. Creating local copies with cloneCreating local copies with clone
10. You can insert Cloneability at any level of inheritance
11. Cloning a composed objectCloning a composed object
12. Serializable and cloneSerializable and clone
13. Go through a few gyrations to add cloning to your own classGo through a few gyrations to add cloning to your own class
14. Checking to see if a reference can be clonedChecking to see if a reference can be cloned
15. The clone operation works for only a few items in the standard Java libraryThe clone operation works for only a few items in the standard Java library
16. Demonstration of cloning
17. Simple demo of avoiding side-effects by using Object.cloneSimple demo of avoiding side-effects by using Object.clone
18. Clone an object with clone method from parent
19. Manipulate properties after clone operation
20. Deep clone ObjectDeep clone Object
21. Serializable Clone
22. Utility for object cloning
23. Clone Via Serialization
24. Clone demo
25. Deep clone serializing/de-serializng Clone
26. Implements a pool of internalized objects
27. A collection of utilities to workaround limitations of Java clone framework
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