Program Java Menghitung Nilai Rata-rata

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class Nilai{
public static void main(String [] args) throws IOException
{
BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in));


int nilaiUAS;
int nilaiUTS;
int ratarata;


System.out.println(" ----NILAI AKHIR SEMESTER----");
System.out.println();
{




//Memasukan nilai akhir semester
System.out.print("Masukan Nilai UAS :");
nilaiUAS = Integer.parseInt(dataIn.readLine());

System.out.print("Masukan Nilai UTS :");
nilaiUTS = Integer.parseInt(dataIn.readLine());

//Nilai Rata-rata
ratarata = ((nilaiUAS + nilaiUTS)/2);


System.out.println("------------------------------");
System.out.println();


//Menmpilkan hasilnya sebagai berikut
System.out.println("------------- Nilai ----------");
System.out.println("       Hasil UAS : "+ nilaiUAS);
System.out.println("       Hasil UTS : "+ nilaiUTS);
System.out.println();
System.out.println("------- Di rata-ratakan -------");
System.out.println("       Rata-rata : "+ ratarata);
System.out.println();


//Kondisi
if (ratarata>=80)
{
System.out.println("Anda mendapat Grade : A");
}
else if (ratarata>=60)
{
System.out.println("Anda mendapat Grade : B");
}
else if (ratarata>=40)
{
System.out.println("Anda mendapat Grade : C");
}
else if (ratarata>=20)
{
System.out.println("Anda mendapat Grade : D");
}
else
{
System.out.println("Anda mendapat Grade : E");
}
}
}
}