A Class with Cloning Capability - Java Object Oriented Design

Java examples for Object Oriented Design:Clone

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Description

A Class with Cloning Capability

Demo Code

public class Main {
  public static void main(String[] args) {
    MyClass dh = new MyClass(100.00);
    // Clone dh//from   w ww .j  a v a 2 s  .  c o  m
    MyClass dhClone = (MyClass) dh.clone();

    // Print the values in original and clone
    System.out.println("Original:" + dh.getValue());
    System.out.println("Clone :" + dhClone.getValue());

    // Change the value in original and clone
    dh.setValue(2.00);
    dhClone.setValue(4.00);

    // Print the values in original and clone again
    System.out.println("Original:" + dh.getValue());
    System.out.println("Clone :" + dhClone.getValue());
  }
}

class MyClass implements Cloneable {
  private double value;

  public MyClass(double value) {
    this.value = value;
  }

  public void setValue(double value) {
    this.value = value;
  }

  public double getValue() {
    return this.value;
  }

  public Object clone() {
    MyClass copy = null;
    try {
      // Call the clone() method of the Object class
      copy = (MyClass) super.clone();
    } catch (CloneNotSupportedException e) {
      // If anything goes wrong during cloning, print the error details
      e.printStackTrace();
    }
    return copy;
  }
}

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