Package make;

import java.util.Scanner;

The class MyException extends Exception {
Public MyException () {
super();
}
Public MyException (String message) {
Super (message);
}
}
The class My {
Public void play (int a, b int, int) c throws MyException {
If (a + bThrow new MyException (" cannot constitute a triangle ");
}
System. The out. Println (" can constitute a triangle ");
}
}
Public class Trangle {
The static double a, b, c;
Private static Scanner scan;
Public Trangle ()
{

}
Public double getCircle ()
{
The return of a + b + c;
}
Public double getArea ()
{
Double p=(a + b + c)/2.0;
Double s=math.h SQRT (p * (p - a) * (p - b) * (p - c));
return s;
}
Public static void main (String [] args) throws MyException {
Try {
Trangle S=new Trangle ();
for(int i=0; i<1) {
System. The out. Println (" input triangle three side: ");
Scan=new Scanner (System. In);
A=scan. NextDouble ();
B=scan. NextDouble ();
C=scan. NextDouble ();
}
} the catch ( MyException e) {
System. The out. Println (" exception: "+ e. oString ());
System. The out. Println (um participant etMessage ());
}

}

}