３つの数の足し算

class test
{
 public static void main(String[] args) throws IOException
 {
  System.out.println("整数を３つ入れて") ;
  
  BufferedReader br =
   new BufferedReader(new InputStreamReader(System.in)) ;
  
  String str1 = br.readLine() ;
  String str2 = br.readLine() ;
  String str3 = br.readLine() ;
  
  int sum = 0 ;
  sum += Integer.parseInt(str1) ;
  sum += Integer.parseInt(str2) ;
  sum += Integer.parseInt(str3) ;

  System.out.println("3つの数の合計は" + sum + "ですよぉー") ;
 }
}