To prove that Computer programing is not Mathamatics!

Just try to run,compile and get the output.But there is an error.Find it and give me the answer!!!


 class Q4{

public static void main(String args[]){

int x=10;
int y=20;

if((x<y)&&(2x==y)&&(3x>y)){

System.out.println("x is less to y");
System.out.println("2x is equal to y");
System.out.println("3x is greater to y");

}
}
}