Contoh kodingan java
(Nilai rata-rata)
mport java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class nilaibuffered{
public static void main(String [] args){
BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in));
int hasil;
int nilai1;
int nilai2;
int nilai3;
System.out.println(“*PROGRAM RATA-RATA NILAI*”);
try
{
System.out.println(“”);
System.out.print(“PBO : “);
nilai1 = Integer.parseInt(dataIn.readLine());
System.out.print(“SBD : “);
nilai2 = Integer.parseInt(dataIn.readLine());
System.out.print(“IMK : “);
nilai3 = Integer.parseInt(dataIn.readLine());
hasil = ((nilai1 + nilai2 + nilai3)/3);
System.out.print(“Nilai Rata-Rata : ” + hasil);
if (hasil >= 60)
System.out.print(”
“);else if (hasil <60)
System.out.print(”
“);}
catch(IOException e)
{
System.out.println(“Isi dengan BENAR”);
}
}
}
Nilai Joption:
import javax.swing.JOptionPane;
public class nilaijoption{
public static void main(String[] args){
int i = 1;
int hasil = 1;
String st1 = “”;
String st2 = “”;
String st3 = “”;
String st4 = “”;
st1 = JOptionPane.showInputDialog(“Nilai Ujian Pertama : “);
int nilai1 = Integer.valueOf(st1).intValue();
st2 = JOptionPane.showInputDialog(“Nilai Ujian Kedua : “);
int nilai2 = Integer.valueOf(st2).intValue();
st3 = JOptionPane.showInputDialog(“Nilai Ujian Ketiga : “);
int nilai3 = Integer.valueOf(st3).intValue();
hasil = (nilai1 + nilai2 + nilai3)/3;
if (hasil >= 60)
st4 = ”
“;else if (hasil < 60)
st4 = ”
“;String st5 = “Rata-rata nilai anda adalah ” + hasil + st4;
JOptionPane.showMessageDialog(null, st5);
}
}
Baca Bilangan if-else:
import javax.swing.JOptionPane;
public class bacabilanganifelse{
public static void main(String[] args){
String h = JOptionPane.showInputDialog(“Masukkan sebuah angka antara 1-10 : “);
int nil = Integer.parseInt(h);
String huruf = “”;
if (nil == 1)
huruf = “Satu”;
else if (nil == 2)
huruf = “Dua”;
else if (nil == 3)
huruf = “Tiga”;
else if (nil == 4)
huruf = “Empat”;
else if (nil == 5)
huruf = “Lima”;
else if (nil == 6)
huruf = “Enam”;
else if (nil == 7)
huruf = “Tujuh”;
else if (nil == 8 )
huruf = “Delapan”;
else if (nil == 9)
huruf= “Sembilan”;
else if (nil == 10)
huruf = “Sepuluh”;
else
huruf = “Invalid Number!”;
JOptionPane.showMessageDialog(null,huruf);
}
}
Baca bilangan switch:
import javax.swing.JOptionPane;
public class bacabilanganswitch{
public static void main(String[] args){
String h = JOptionPane.showInputDialog(“Masukkan sebuah angka antara 1-10 : “);
int i = Integer.parseInt(h);
String huruf = “”;
switch (i)
{
case 1:
huruf = “Satu”;
break;
case 2:
huruf = “Dua”;
break;
case 3:
huruf =”Tiga”;
break;
case 4:
huruf =”Empat”;
break;
case 5:
huruf =”Lima”;
break;
case 6:
huruf =”Enam”;
break;
case 7:
huruf =”Tujuh”;
break;
case 8:
huruf =”Delapan”;
break;
case 9:
huruf =”Sembilan”;
break;
case 10:
huruf =”Sepuluh”;
break;
default:
huruf = “Invalid Number!”;
}
JOptionPane.showMessageDialog(null,huruf);}
}
Cetakfor:
public class cetakfor{
public static void main(String[]args){
int a;
a=1;
for(a=1;a<100;a++)
{
System.out.println(“Bobby A.M Norman”);
}
}
}
Cetak while:
public class cetakwhile{
public static void main(String[]args){
int a;
a=1;
while(a<100)
{
System.out.println(“Bobby A.M Norman”);
a=a+1;
a++;
}
}
}
Cetak dowhile:
public class cetakdowhile{
public static void main(String[]args){
int a;
a=1;
do
{
System.out.println(“Bobby A.M Norman”);
a++;
}
while(a<100);
}
}
Pangkat dowhile:
import javax.swing.JOptionPane;
public class pangkatdowhile{
public static void main(String[]args){
int hasil = 1;
String x = “”;
String y = “”;
x = JOptionPane.showInputDialog(“Masukin Angka dong”);
int angka = Integer.valueOf(x).intValue();
y = JOptionPane.showInputDialog(“Masukin Pangkat dong”);
int pangkat = Integer.valueOf(y).intValue();
int i=1;
do
{
i++;
hasil=hasil*angka;
}
while(i<=pangkat);
String st3 = angka + ” Pangkat ” + pangkat + ” = “+hasil;
JOptionPane.showMessageDialog(null, st3);
}
}
Pangkat for:
import javax.swing.JOptionPane;
public class pangkatfor{
public static void main(String[]args){
int hasil = 1;
String x = “”;
String y = “”;
x = JOptionPane.showInputDialog(“Masukin Angka dong”);
int angka = Integer.valueOf(x).intValue();
y = JOptionPane.showInputDialog(“Masukin Pangkat dong”);
int pangkat = Integer.valueOf(y).intValue();
for(int i=1;i<=pangkat;i++)
{
hasil=hasil*angka;
}
String st3 = angka + ” Pangkat ” + pangkat + ” = “+hasil;
JOptionPane.showMessageDialog(null,st3);
}
}
Pangkat while:
import javax.swing.JOptionPane;
public class pangkatwhile{
public static void main(String[]args){
int hasil = 1;
String x = “”;
String y = “”;
x = JOptionPane.showInputDialog(“Masukin Angka dong”);
int angka = Integer.valueOf(x).intValue();
y = JOptionPane.showInputDialog(“Masukin Pangkat dong”);
int pangkat = Integer.valueOf(y).intValue();
int i=1;
while(i<=pangkat)
{
i++;
hasil=hasil*angka;
}
String st3 = angka + ” Pangkat ” + pangkat + ” = “+hasil;
JOptionPane.showMessageDialog(null, st3);
}
}
