Comments on: Java Final Keyword

By: Satish

Satish — Mon, 27 Dec 2010 08:57:30 +0000

Thanks very much Joe for such easy and nice explanation. I have a query though.

Could you explain how to make an object reference constant as well as the object assigned to it immutable? I suppose this is possible but still is a puzzel to me.

Thanks in advance,
Satish

By: Saurabh

Saurabh — Fri, 17 Dec 2010 10:18:21 +0000

class jlc{
public static void main(String as[]){
final int x=10;
byte b=x; System.out.println(b);
}
}
can any one explain how typecasting is possible and memory representation of final keyword.

By: preeti

preeti — Mon, 13 Dec 2010 17:15:18 +0000

Java classes declared as final cannot be extended. Restricting inheritance!

here
what’s mean of “Restrictinginheritance!”

By: kapS

kapS — Wed, 08 Dec 2010 02:47:29 +0000

great!!!!!!!!it’s the very useful note for comparison to any other reference books…

By: sonu

sonu — Thu, 11 Nov 2010 06:49:36 +0000

very use full for programmer

By: Md. Murad Hussain

Md. Murad Hussain — Mon, 08 Nov 2010 12:40:24 +0000

/* Check this is the FINAL one….. */

class Circle
{
protected float radius;
public static final float PI=3.14f;
public Circle()
{
radius=0f;
}
public Circle( float radius)
{
this.radius=radius;
}
public void setData(float radius)
{
this.radius=radius;
}
public void showData()
{
System.out.println(“radius is:”+radius);
}
public final float getArea()
{
return PI*(float)Math.pow(radius,2);
}
public static void main(String args[])
{
Circle c1=new Circle();
c1.setData(5f);
c1.showData();
}
System.out.println(“Area is:”+c1.getArea());
}