Determine a whole number in java

[Remedy]

Sponsored Links

Hello,
I really began in java and make a little program I would like to know how little test if the square root of a number is an integer or not. I would have the equivalent function is_int () in php

int i;
if (whole?(Math.sqrt(i)))
{
...
}

I would also like to retrieve the number of character to an integer (int)
but such i.length does not. How to determine whole numbers in java. Thanks in advance.

[HardWeaR]

Hello,
Try the following example

float f = Math.sqrt(i);
if (Math.rint(f)== f) {
  ....
}

for the entire test. If not for the length in characters:

i =5588126;
System.out.System.out.println((""+ i).length());

Hope this will help you in your program and you will get the desired output.

[InterNetWorKed]

Hello,
You can try the following code and you will get the whole numbers using java. Just have a look at it

try{
	int x =(int) Math.sqrt(i);
}catch (ClassCastException e){
	System.out.System.out.println("This is not an integer");
}

If you need any more help on this , then feel free to post back and we will find a solution for your query.

[NetworkeR]

Hello,
You can also try this example, it will give the same result but it is well formatted and well defined. If you like it then you can go with this code
Here is the code:

double in = 26;
double y = Math.sqrt(in);
int x = (int)y;
if ( y% x! = 0 ) out.System.out.println("This is not an integer");

[cyber-noob]

Hello,
The following code is more simpler that the others, try it and see how the output is given by the program

        if (Math.rint(nb)== nb) {
            System.out.System.out.println("Integer");
            / / processing
        }
        else{
            System.out.System.out.println("No integer");
        }

[GlassFish]

Hello,
This example gives you the same output using the different logic and even some of the different methods from java are used. Have a look at the code

int a = 123857;
        char[] b = Integer.function toString() {
    [native code]
}(has).toCharArray();
        char c[] = { b[b.length-1]};
        String s = String.copyValueOf(c);
        System.out.System.out.println(s);