Tugas Java Nomor 1 a

package tugas;
import java.io.*;
/**
 *
 * @author kalvin jr
 */
public class Tugas {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        DataInputStream x = new DataInputStream(System.in);
        String nama,stb,almt;
        int nt,nm,nf;
        double na;
     try{
            System.out.print("Masukkan Stambuk Anda : ");
            stb = x.readLine();
            System.out.print("Masukkan Nama Anda : ");
            nama = x.readLine();
            System.out.print("Masukkan Alamat Anda : ");
            almt = x.readLine();
            System.out.print("Masukkan Nilai Tugas Anda : ");
            nt = Integer.parseInt(x.readLine());
            System.out.print("Masukkan Nilai Mid Anda : ");
            nm = Integer.parseInt(x.readLine());
            System.out.print("Masukkan Nilai Final Anda : ");
            nf = Integer.parseInt(x.readLine());

            na = ((0.3*nt)+(0.3*nm)+(0.4*nf));
            System.out.println("\n\n");
            System.out.println("============NILAI MAHASISWA===============");
            System.out.println("\n");
            System.out.println("STAMBUK\t\t: "+stb);
            System.out.println("NAMA\t\t: "+nama);
            System.out.println("ALAMAT\t\t: "+almt);
            System.out.println("NILAI TUGAS\t: "+nt);
            System.out.println("NILAI MID\t: "+nm);
            System.out.println("NILAI FINAL\t: "+nf);
            System.out.println("NILAI AKHIR\t: "+na);

     }catch(IOException io)
     { System.out.print("Eror"+io.getMessage());
     }




     }
        // TODO code application logic here

}