Look at following Java code ----------------------------------------------------

Question

Look at following Java code

-----------------------------------------------------------------------------------------------
class point implements Cloneable {

int x;
int y;

public point(int x, int y) {
this.x = x;
this.y = y;
}

@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();

}
}

class Circle implements Cloneable {

point center;
int radius;

public Circle(point center, int radius) {
this.center = center;
this.radius = radius;
}

@Override
protected Object clone() throws CloneNotSupportedException {
Circle clone = (Circle) super.clone();
return clone;

}
}

public class JavaApplication6 {

public static void main(String[] args) {
Circle c1 = new Circle(new point(10, 20), 10), c2 = null;
try {
c2 = (Circle) c1.clone();
} catch (CloneNotSupportedException ex) {
System.out.println("Clone failed");
}
System.out.println(c1 == c2);
System.out.println(c1.center == c2.center);
}

}

-----------------------------------------------------------------------------------------------------

If you think that this code does not give you a clone, change the code to get a clone

Explanation / Answer

Note: What ever the code you written to clone the Object sis right.But to Compare the two objects We have to use equals() method instead of using double equals( == ) to Operator.We Use this operator to compare primitive type values.But not objects.So I written equals() method to compare Circle objects.If u have any doubt further .Just message in comment section.So that I will clear.Thank You

______________

JavaApplication6.java

class point implements Cloneable {
int x;
int y;

public point(int x, int y) {
this.x = x;
this.y = y;
}

@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}

@Override
public String toString() {
return "[" + x + "," + y + "]";
}

}

class Circle implements Cloneable {
point center;
int radius;

public Circle(point center, int radius) {
this.center = center;
this.radius = radius;
}

@Override
protected Object clone() throws CloneNotSupportedException {
Circle clone = (Circle) super.clone();
return clone;
}

public boolean equals(Circle other) {

if (center == null) {
if (other.center != null)
return false;
} else if (!center.equals(other.center))
return false;
if (radius != other.radius)
return false;
return true;
}

@Override
public String toString() {
return "Circle [center=" + center + ", radius=" + radius + "]";
}

}

public class JavaApplication6 {
public static void main(String[] args) {
Circle c1 = new Circle(new point(10, 20), 10), c2 = null;
try {
c2 = (Circle) c1.clone();
} catch (CloneNotSupportedException ex) {
System.out.println("Clone failed");
}

System.out.println("Displaying The Circle#1 Obj Info :");
System.out.println(c1.toString());
System.out.println(" Displaying The Circle#2 Obj Info :");
System.out.println(c2.toString());

if (c1.equals(c2)) {
System.out.println(" Circle#1 object is equal to Circle#2 Object");
} else {
System.out.println("Circle#1 object is not equal to Circle#2 Object");
}

}
}

__________________

Output:

Displaying The Circle#1 Obj Info :
Circle [center=[10,20], radius=10]

Displaying The Circle#2 Obj Info :
Circle [center=[10,20], radius=10]

Circle#1 object is equal to Circle#2 Object

_____________Could you rate me well.Plz .Thank You

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