Contoh-contoh program menggunakan JoptionPane
Pertama
import javax.swing.*;
public class tugas_bintang1 {
public static void main(String[] args){
int x;
x=Integer.valueOf(JOptionPane.showInputDialog("Masukan banyak bintang :"));
for(int i=1;i<=x;i++){
for(int j=1;j<=x;j++){
if(j<=i)
System.out.print("*");
else
System.out.print(" ");
}
System.out.println();
}
}
}
Output keluarnya…
run:
*
**
***
****
Sintaks menggunakan switch (pilih)
import java.util.Scanner;
public class SwitchPilihan {
public static void main(String[] args){
Scanner input=new Scanner(System.in);
garis();
System.out.println(" MENU PILIHAN ");
garis();
System.out.println("1. Menghitung nilai rata-rata ");
System.out.println("");
System.out.println("2. Menghitung bilangan kelipatan 4 ");
System.out.println("");
System.out.println("3. Keluar");
garis();
System.out.print("Anda pilih nomer :");
int pilih=input.nextInt();
switch (pilih){
case 1: {
System.out.println("Menghitung nilai rata-rata");
System.out.println("");
System.out.print("Masukan jumlah data =");
int n=input.nextInt(); int[] data=new int[10];
for(int i=1;i<=n;i++){
System.out.print("Data ke"+i +"=");
data[i]=input.nextInt();
}
int jum=0;
for(int i=1;i<=n;i++){
jum=jum +data[i];
}
System.out.println("Jumlah ="+jum);
int rata=jum/n;
System.out.println("Rata-rata ="+rata);
break;
}
case 2: {
System.out.println("Menghitung kelipatan 4");
System.out.println("");
System.out.print("Dari =");
int nilai_awal=input.nextInt();
System.out.print("Sampai =");
int nilai_akhir=input.nextInt();
for(int i=nilai_awal;i<=nilai_akhir;i++){
if(i%4==0){
System.out.println(i);
}
}
break;
}
default:System.exit(0);
}
}
static void garis(){
System.out.println("------------------------------------");
}
}
Output yang keluar akan seperti dibawah ini !!
run:
------------------------------------
MENU PILIHAN
------------------------------------
1. Menghitung nilai rata-rata
2. Menghitung bilangan kelipatan 4
3. Keluar
------------------------------------
Anda pilih nomer :2
Menghitung kelipatan 4
Dari =10
Sampai =20
12
16
20
ulangan
public class Pemrogaman {
public static void main(String[] args){
String kal1="STMIK BANI SHALEH";
String kal2="Pemrogaman 2";
int i,j;
for(i=1;i<=3;i++){
System.out.println("");
System.out.println(kal1);
for(j=1;j<=3;j++){
System.out.println(kal2);
}
}
}
}
Outputnya seperti dibawah ini
run:
STMIK BANI SHALEH
Pemrogaman 2
Pemrogaman 2
Pemrogaman 2
STMIK BANI SHALEH
Pemrogaman 2
Pemrogaman 2
Pemrogaman 2
STMIK BANI SHALEH
Pemrogaman 2
Pemrogaman 2
Pemrogaman 2
htng
public class Hitung {
public static void main(String[] args){
int[] data1={0,1,2,3,4,5};
int[] data2={0,1,2,3,4,5};
int i,j,jum;
System.out.println("+ 0 1 2 3 4 5");
System.out.println("-----------------");
for (i=0;i<=5;i++){
System.out.print(i);
for(j=0;j<=5;j++){
jum=data1[i]+data2[j];
System.out.print(" "+jum);
}
System.out.println("");
}
}
}
Outputnya adalah
run:
+ 0 1 2 3 4 5
-----------------
0 0 1 2 3 4 5
1 1 2 3 4 5 6
2 2 3 4 5 6 7
3 3 4 5 6 7 8
4 4 5 6 7 8 9
5 5 6 7 8 9 10
menhitung nilai maha siswa
menghitung nilai mhs
import java.util.Scanner;
public class Baru {
public static void main(String[] args){
Scanner input=new Scanner(System.in);
garis();
System.out.println(" MENU PILIHAN ");
garis();
System.out.println("1. Menhitung Nilai Mahasiswa");
System.out.println("");
System.out.println("2. Exit");
garis();
System.out.println("");
System.out.print("Anda pilih no :");
int pilih=input.nextInt();
switch(pilih){
case 1:{
int[] npm=new int[20];
String[] nama=new String[20];
String[] jur=new String[20];
String[] mk=new String[20];
int[] n_tgas=new int[20];
int[] n_uts=new int[20];
int[] n_uas=new int[20];
garis();
System.out.println(" MENGHITUNG NILAI MAHASISWA");
garis();
System.out.println("");
System.out.print("Masukan jumlah data ="); int n=input.nextInt();
for(int i=1;i<=n;i++){
System.out.println("Data ke"+i +":");
System.out.print("NPM :"); npm[i]=input.nextInt();
System.out.print("Nama :"); nama[i]=input.next();
System.out.print("Jurusan :"); jur[i]=input.next();
System.out.print("Mata Kuliah :"); mk[i]=input.next();
System.out.print("Nilai tugas :"); n_tgas[i]=input.nextInt();
System.out.print("Nilai UTS :"); n_uts[i]=input.nextInt();
System.out.print("Nilai UAS :"); n_uas[i]=input.nextInt();
double rata=(n_tgas[i]+n_uts[i]+n_uas[i])/3;
System.out.println("Nilai rata-rata ="+rata);
}
break;
}
default:System.exit(0);
}
}
static void garis(){
System.out.println("==========================================");
}
}
Outputnya
run:
==========================================
MENU PILIHAN
==========================================
1. Menhitung Nilai Mahasiswa
2. Exit
==========================================
Anda pilih no :1
==========================================
MENGHITUNG NILAI MAHASISWA
==========================================
Masukan jumlah data =2
Data ke1:
NPM :432
Nama :aku
Jurusan :ti
Mata Kuliah :pm2
Nilai tugas :80
Nilai UTS :70
Nilai UAS :87
Nilai rata-rata =79.0
Data ke2:
NPM :434
Nama :ina
Jurusan :ti
Mata Kuliah :pm1
Nilai tugas :70
Nilai UTS :80
Nilai UAS :70
Nilai rata-rata =73.0
Langganan:
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