Buat Kalender Sederhana pake Java

Tulisan ini sebenarnya sudah lama tapi karena banyak script yang aneh akhirnya saya berinisiatif untuk meng-updatenya. Disini saya akan menulis tentang bagaimana membuat sebuah Kalender Sederhana berbasis Java, semoga bermanfaat..

Konsepnya disini anda akan diminta terlebih dahulu menginputkan tahun dan hari pertama di tahun tersebut, selanjutnya akan ditampilkan kalender dalam satu tahun terseebut, ini sederhana mungkin anda bisa mengembangkan lebih lanjut.

Membuat Kalender dengan Java biasanya menggunakan paket java.util.calendar, paket ini sudah langsung ada pada JDK saat diinstall, jadi gak perlu repot-repot untuk menambahkan paket ini. Untuk menggunakan paket java.util.calendar ini anda hanya perlu menginclude-kan ke program anda. Dengan cara menambahkan Kode
import java.util.calendar ke kepala dari class yang anda buat.

Berikut kode program secara lengkap :

Let’s Coding….!!!

import java.util.Calendar;
import java.util.Scanner;

public class JavaSimpleCalendar
{
public static void main(String[]args)
{
Scanner s=new Scanner(System.in);

System.out.print("YEAR : ");
int year=s.nextInt();

System.out.println();

System.out.println("FIRST DAY OF THE YEAR");
System.out.println("1 for MONDAY");
System.out.println("2 for TUESDAY");
System.out.println("3 for WEDNESDAY");
System.out.println("4 for THURSDAY");
System.out.println("5 for FRIDAY");
System.out.println("6 for SATURDAY");
System.out.println("7 for SUNDAY");
System.out.print("FIRST DAY : ");
int firstDay=s.nextInt();

System.out.println();

boolean leapYear=false;
if(year%4==0)
{
leapYear=true;
}

for(int i=1;i<=12;i++)
{
System.out.println("***********************");
System.out.println("MONTH : "+i);
System.out.println("***********************");

if(i==1||i==3||i==5||i==7||i==8||i==10||i==12)
{
System.out.println("M T W TH F S SU");
boolean firstRound=true;
for(int j=1;j<=31;j++)
{
String temp=Integer.toString(j);
if(temp.length()==1)
{
System.out.print(" ");
}
if(firstDay==1)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=1;k++)
{
System.out.print("");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==2)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=3;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}

}
else if(firstDay==3)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=6;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==4)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=9;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==5)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=12;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==6)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=15;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==7)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=18;k++)
{
System.out.print("-");
}
System.out.println(j+" ");
}
else
{
System.out.println(j+" ");
}
firstDay=0;
firstRound=false;
}
firstDay++;
}
System.out.println("\n");
}
else if(i==2)
{
if(leapYear==true)
{
System.out.println("M T W TH F S SU");
boolean firstRound=true;
for(int j=1;j<=29;j++)
{
String temp=Integer.toString(j);
if(temp.length()==1)
{
System.out.print(" ");
}
if(firstDay==1)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=1;k++)
{
System.out.print("");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==2)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=3;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}

}
else if(firstDay==3)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=6;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==4)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=9;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==5)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=12;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==6)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=15;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==7)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=18;k++)
{
System.out.print("-");
}
System.out.println(j+" ");
}
else
{
System.out.println(j+" ");
}
firstDay=0;
firstRound=false;
}
firstDay++;
}
System.out.println("\n");
}
else
{
System.out.println("M T W TH F S SU");
boolean firstRound=true;
for(int j=1;j<=28;j++)
{
String temp=Integer.toString(j);
if(temp.length()==1)
{
System.out.print(" ");
}
if(firstDay==1)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=1;k++)
{
System.out.print("");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==2)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=3;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}

}
else if(firstDay==3)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=6;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==4)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=9;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==5)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=12;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==6)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=15;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==7)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=18;k++)
{
System.out.print("-");
}
System.out.println(j+" ");
}
else
{
System.out.println(j+" ");
}
firstDay=0;
firstRound=false;
}
firstDay++;
}
System.out.println("\n");
}
}
else
{
System.out.println("M T W TH F S SU");
boolean firstRound=true;
for(int j=1;j<=30;j++)
{
String temp=Integer.toString(j);
if(temp.length()==1)
{
System.out.print(" ");
}
if(firstDay==1)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=1;k++)
{
System.out.print("");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==2)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=3;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}

}
else if(firstDay==3)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=6;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==4)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=9;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==5)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=12;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==6)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=15;k++)
{
System.out.print("-");
}
System.out.print(j+" ");
}
else
{
System.out.print(j+" ");
}
}
else if(firstDay==7)
{
if(firstRound==true&&j==1)
{
for(int k=1;k<=18;k++)
{
System.out.print("-");
}
System.out.println(j+" ");
}
else
{
System.out.println(j+" ");
}
firstDay=0;
firstRound=false;
}
firstDay++;
}
System.out.println("\n");
}
}
}
}

Scriptnya lumayan panjang ya…
Selanjutnya anda dapat lakukan proses compile. kalau memang tidak ada kesalahan dalam proses coding anda, maka program akan berjalan sesuai dengan uraian saya diatas. Namun apabila ada error silahkan anda cek kembali coding anda.. Bila kesalahan tetap terjadi, anda bisa download script disini.