Program Nilai Rata-rata Sederhana dengan Input dengan Java

import java.io.*;

class Penilaian {
public static void main(String[] args) throws IOException {
BufferedReader bfr= new BufferedReader
(new InputStreamReader(System.in));
String x;
double absen,quis,tugas,UTS,UAS,x1,x2,x3,x4,x5,x6,x7,x8,a,b,c,d,e,f,g,h;
a=100/10;
b=90/10;
c=80/10;
d=50/10;
f=0.15;
g=0.25;
h=0.35;

System.out.print("Masukkan Nama Mahasiswa :");
x=bfr.readLine();


System.out.print("Masukkan Jumlah Absen :");
absen=Double.parseDouble(bfr.readLine());



System.out.print("Masukkan Jumlah Quis :");
quis=Double.parseDouble(bfr.readLine());

x1=quis*f;
System.out.print("Masukkan Jumlah Tugas :");
tugas=Double.parseDouble(bfr.readLine());

x2=tugas*f;
System.out.print("Masukkan Jumlah UTS :");
UTS=Double.parseDouble(bfr.readLine());


x3=UTS*g;
System.out.print("Masukkan Jumlah UAS :");
UAS=Double.parseDouble(bfr.readLine());
x4=UAS*h;



System.out.println("Nilai quis :"+x1);


System.out.println("Nilai Tugas :"+x2);

System.out.println("Nilai UTS :"+x3);


System.out.println("Nilai UAS :"+x4);
x5= a +x1 + x2 + x3 + x4;
x6= b +x1 + x2 + x3 + x4;
x7= c +x1 + x2 + x3 + x4;
x8= d +x1 + x2 + x3 + x4;

if (absen==0)
System.out.print("Nilai Keseluruhan :"+x5);


else if (absen==1)
System.out.print("Nilai Keseluruhan :"+x6);
else if (absen==2)
System.out.print("Nilai Keseluruhan :"+x7);
else
System.out.print("Nilai Keseluruhan :"+x8);

}

}

Belajar Membuat tampilan GUI sederhana pada Pemrograman Java

Membuat tampilan GUI sederhana dengan Java

import javax.swing.JOptionPane;
class tingkat1
{
public static void main(String[] args)
{
//memasukkan angka
String angka_string;
angka_string = JOptionPane.showInputDialog(null,"Masukkan sebuah angka dari 100-0 :","ANGKA 0 - 100",
JOptionPane.QUESTION_MESSAGE);

//konversi angka ke integer
int angka;
angka = Integer.parseInt(angka_string);

String pesan;
//pemberian nilai huruf pada angka yg dimasukkan
if(angka>100)
{
pesan = "Anda pasti tidak membaca perintah !";
}
else if(angka>=90)
{
pesan = "Nilai anda A";
}
else if(angka>=70)
{
pesan = "Nilai anda B";
}
else if(angka>=60)
{
pesan = "Nilai anda C";
}
else if(angka>=50)
{
pesan = "Nilai anda D";
}
else
{
pesan = "anda tidak lulus";
}

//menampilkan hasil
JOptionPane.showMessageDialog(null, pesan, "NILAI ANDA",
JOptionPane.INFORMATION_MESSAGE);
}
}

Membuat Program Data Mahasiswa Dengan Menggunakan Array pada Java

contoh program data Mahasiswa menggunakan Array pada Java Programing.
dengan cara menginputkan beberapa data mahasiswa yang di inputkan lebih dari 1


import java.io.*;
class Mahasiswa{
Mahasiswa(){
}
public void tampilMahasiswa() throws IOException{
int b,nim1,nim2,nim3,nim4,nim5,umur1,umur2,umur3,umur4,umur5;
String nama1,nama2,nama3,nama4,nama5,alamat1,alamat2,alamat3,alamat4,alamat5;

BufferedReader br = new BufferedReader
(new InputStreamReader(System.in));


System.out.println("========================================================");
System.out.print("Masukkan Nim :");
nim1=Integer.parseInt(br.readLine());
System.out.print("Masukkan Nama:");
nama1=br.readLine();
System.out.print("Masukkan Umur:");
umur1=Integer.parseInt(br.readLine());
System.out.print("Masukkan Alamat :");
alamat1=br.readLine();
System.out.println("========================================================");
System.out.print("Masukkan Nim :");
nim2=Integer.parseInt(br.readLine());
System.out.print("Masukkan Nama:");
nama2=br.readLine();
System.out.print("Masukkan Umur:");
umur2=Integer.parseInt(br.readLine());
System.out.print("Masukkan Alamat :");
alamat2=br.readLine();
System.out.println("========================================================");
System.out.print("Masukkan Nim :");
nim3=Integer.parseInt(br.readLine());
System.out.print("Masukkan Nama:");
nama3=br.readLine();
System.out.print("Masukkan Umur:");
umur3=Integer.parseInt(br.readLine());
System.out.print("Masukkan Alamat :");
alamat3=br.readLine();
System.out.println("========================================================");
System.out.print("Masukkan Nim :");
nim4=Integer.parseInt(br.readLine());
System.out.print("Masukkan Nama:");
nama4=br.readLine();
System.out.print("Masukkan Umur:");
umur4=Integer.parseInt(br.readLine());
System.out.print("Masukkan Alamat :");
alamat4=br.readLine();
System.out.println("========================================================");
System.out.print("Masukkan Nim :");
nim5=Integer.parseInt(br.readLine());
System.out.print("Masukkan Nama:");
nama5=br.readLine();
System.out.print("Masukkan Umur:");
umur5=Integer.parseInt(br.readLine());
System.out.print("Masukkan Alamat :");
alamat5=br.readLine();
System.out.println("========================================================");

String[]nama={nama1,nama2,nama3,nama4,nama5};

String[]alamat={alamat1,alamat2,alamat3,alamat4,alamat5};

int[]nim={nim1,nim2,nim3,nim4,nim5};

int[]umur={umur1,umur2,umur3,umur4,umur5};

System.out.print("Masukkan Nim yang ingin di cari =");
b=Integer.parseInt(br.readLine());
if (b==nim[0]){
System.out.print("Nim Nomor ");
System.out.println(nim[0]);
System.out.print("Dimiliki oleh ");
System.out.println(nama[0]);
System.out.print("Umur :");
System.out.println(umur[0]);
System.out.print("Alamat :");
System.out.println(alamat[0]);
}else if(b==nim[1]){
System.out.print("Nim Nomor ");
System.out.println(nim[1]);
System.out.print("Dimiliki oleh ");
System.out.println(nama[1]);
System.out.print("Umur :");
System.out.println(umur[1]);
System.out.print("Alamat :");
System.out.println(alamat[1]);
}else if(b==nim[2]){
System.out.print("Nim Nomor ");
System.out.println(nim[2]);
System.out.print("Dimiliki oleh ");
System.out.println(nama[2]);
System.out.print("Umur :");
System.out.println(umur[2]);
System.out.print("Alamat :");
System.out.println(alamat[2]);
}else if(b==nim[3]){
System.out.print("Nim Nomor ");
System.out.println(nim[3]);
System.out.print("Dimiliki oleh ");
System.out.println(nama[3]);
System.out.print("Umur :");
System.out.println(umur[3]);
System.out.print("Alamat :");
System.out.println(alamat[3]);
}else if(b==nim[4]){
System.out.print("Nim Nomor ");
System.out.println(nim[4]);
System.out.print("Dimiliki oleh ");
System.out.println(nama[4]);
System.out.print("Umur :");
System.out.println(umur[4]);
System.out.print("Alamat :");
System.out.println(alamat[4]);
}else
System.out.print("Nim Yang Anda Masukkan Tidak Terdaftar");



}

}
class DataMahasiswa{
public static void main(String args[])throws IOException{

BufferedReader br = new BufferedReader
(new InputStreamReader(System.in));

Mahasiswa stikom = new Mahasiswa();
stikom.tampilMahasiswa();


}
}
Dengan cara menginputkan nim = nomor induk mahasiswa untuk mencari data mahasiswa yang sudah di registrasi.