Shallow Copy Test : Clone « Class « Java

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Java » Class » CloneScreenshots 
Shallow Copy Test
Shallow Copy Test
    
/*
Software Architecture Design Patterns in Java
by Partha Kuchana 

Auerbach Publications

*/



class Person implements Cloneable {
  //Lower-level object
  private Car car;

  private String name;

  public Car getCar() {
    return car;
  }

  public String getName() {
    return name;
  }

  public void setName(String s) {
    name = s;
  }

  public Person(String s, String t) {
    name = s;
    car = new Car(t);
  }

  public Object clone() {
    //shallow copy
    try {
      return super.clone();
    catch (CloneNotSupportedException e) {
      return null;
    }
  }
}

class Car {

  private String name;

  public String getName() {
    return name;
  }

  public void setName(String s) {
    name = s;
  }

  public Car(String s) {
    name = s;
  }
}

public class ShallowCopyTest {

  public static void main(String[] args) {
    //Original Object
    Person p = new Person("Person-A""Civic");
    System.out.println("Original (orginal values): " + p.getName() " - "
        + p.getCar().getName());

    //Clone as a shallow copy
    Person q = (Personp.clone();

    System.out.println("Clone (before change): " + q.getName() " - "
        + q.getCar().getName());

    //change the primitive member
    q.setName("Person-B");

    //change the lower-level object
    q.getCar().setName("Accord");

    System.out.println("Clone (after change): " + q.getName() " - "
        + q.getCar().getName());

    System.out.println("Original (after clone is modified): " + p.getName()
        " - " + p.getCar().getName());

  }
}

           
         
    
    
    
  
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. Creating a Deep Copy
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
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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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