stuck at isInfinite and isNan....please help

[Cosmos]

public class InfNaN {
public static void main(String[] args) {
Double d1=new Double(1/0.);
Double d2=new Double(0/0.);
System.out.println("Infinite:"+d1.isInfinite()+"\n Not a number:"+d1.isNaN());
System.out.println("Infinite:"+d2.isInfinite()+"\n Not a number:"+d2.isNaN());
}
}

this is my program...i want to ask what is the use of .(dot) in Double class constructor(i.e.what it means by 1/0.???)
i wrote the program without using .(dot) and i got the exception of divide by zero.....

[Fubarable]

Without the dot you're working with ints, not doubles and doing int division, not double division, and as you're finding out, they behave differently.

[Cosmos]

that means by double division we can divide a number by zero and we wont get divide by zero exception????

[Cosmos]

thanks bro....i got my answer....

[Fubarable]

that means by double division we can divide a number by zero and we wont get divide by zero exception????

No need for us to tell you anything as you can see the results for yourself in your code's output. But if you want to learn more about this, check out what the Java Language Specification (JLS) has to say about this: JLS §15.17.2 Division Operator /

[Cosmos]

just one more question bro.....

so the dot is something like a convertor that converts int to double or float?????