class Math {
public static void main(String args[]){

 
MyMath a = new MyMath();


long Result = a.add(5L, 6L);
long Result2 = a.sub(5L, 6L);
long Result3 = a.mul(5L, 6L);
double Result4 = a.div(5L, 6L);

 

System.out.println("Result, Add : "+Result);
System.out.println("Result, Subtract : "+Result2);
System.out.println("Result, Multiply : "+Result3);
System.out.println("Result, Divede : " +Result4); 
}
}

public class MyMath{
 long add(long a, long b){
  return a+b;
 }
 
 long mul(long a, long b){
  return a*b;
 }
 
 long sub(long a, long b){
  return a-b;
 }
 
 double div(double a, double b){
  return a / b;
 }
}


java.lang.NoSuchMethodError: main
Exception in thread "main"
출력 완료 (0초 경과) - 정상 종료