Java Luas Segitiga

import java.io.*;
public class tuga1
{
public static void main(String[] args) throws IOException {
int alas;
int tinggi;
int luas;
BufferedReader m0811504565= new BufferedReader(new InputStreamReader(System.in));
try {
System.out.print("Masukan Alas : ");
alas= Integer.parseInt(m0811504565.readLine());
System.out.print("Masukan Tinggi : ");
tinggi= Integer.parseInt(m0811504565.readLine());
luas=alas*tinggi/2;
System.out.println("Luas Segi Tiga :"+luas);
}
catch(Exception e) {
System.out.println("Error : " + e);
}
}
}