Railway reservation program in Java using inheritance

Railway reservation program in Java using inheritance

import java.io.*;
import java.util.*;
class railwaydisplay extends date
{int row,col;
public void display()throws IOException
{
Calendar c=Calendar.getInstance();
BufferedReader r=new BufferedReader(new InputStreamReader(System.in));
railway ob=new railway();
for(;;)
{
displ();
ob.input();

railrev ob1=new railrev();
System.out.println("SEE THE VACANT POSITION AND THEN BOOK THE BERTH");
ob1.disp();
System.out.println("\nEnter ROW NO.OF BERTH:- ");
row=Integer.parseInt(r.readLine());
System.out.println("AND COLUMN NO. OF BERTH.:-");
col=Integer.parseInt(r.readLine());

ob1.check(row,col);
System.out.println("\f");
System.out.println("_________________________________________________________________");
System.out.println("NAME "+" "+" AGE "+" "+" GENDER");
for(int i=0;i<6;i++)
{
System.out.println(ob.name[i]+" "+ob.age[i]+" "+ob.gen[i]+" ");
}

System.out.println("_________________________________________________________________");
System.out.println("Train name: "+ ob.train);

System.out.println("date of journey :"+ dd+"/"+mm+"/"+yy);
System.out.println("Departure from:"+ob.ss);
System.out.println("Destination :"+ob.ds);
System.out.println("coach no."+ob.code);
System.out.println("=================================================================");
System.out.println("Today is:-"+c.get(Calendar.DATE)+"/"+(c.get(Calendar.MONTH)+1)+"/"+c.get(Calendar.YEAR));

System.out.println(" HAVE A HAPPY JOURNEY ");
System.out.println("_________________________________________________________________");
System.out.println("Do you want to continue(y/n)?");
String ch=(r.readLine());
if(ch.equalsIgnoreCase("n"))
break;
else
ob1.disp();
}
}

}

write in another class

class railrev
{
int b[][]=new int[10][5];
public railrev()
{
for(int r=0;r<10;r++)
{
for(int c=0;c<5;c++)
{
b[r][c]=0;
}
}
}

public void disp()
{
System.out.println("*********************Seats vacant=0: Seats reserved=1**************");
System.out.println("*********************~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~**************");
for(int r=0;r<10;r++)
{
for(int c=0;c<5;c++)
{
System.out.print(" "+b[r][c]+" ");
}
System.out.println();
}
}
//enter row and column no. of seat
//you want to reserve.
public void check(int r,int c)

{
boolean flag=false;
r=r-1;
c=c-1;
if(r<0||r>=10||c<0||c>=5)
{
System.out.println("Sorry........................There are only 10 rows and 5 columns");

}
else if(b[r][c]==0)
{

b[r][c]=1;
System.out.println(" Requested Confirmed......Wish you a Well Journey ");
disp();


}
else if(b[r][c]==1)
{
for(int j=0;j<5;j++)
{
if(b[r][j]==0)
{
b[r][j]=1;
System.out.println("You have been given an alternative seat.Your seat number is at row= "+(r+1)+" and column= "+(j+1));
flag=true;
break;
}
}
if(flag==false) System.out.println("Sorry no seat is vacant in this row please select another row");




disp();
}


}
}

write in another class

import java.io.*;
class railway
{
String name[]=new String[6];
String age[]=new String[6];
String gen[]=new String[6];

String train;
String dj,ds,ss,code;
public void input()throws IOException
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Enter train name :-");
train=br.readLine();
System.out.println("Enter coach no.:-");
code=br.readLine();

System.out.println("Enter max. Six persons name:-");
for(int i=0;i<6;i++)
{
System.out.print("person name: "+(i+1)+")");
name[i]=br.readLine();
}
System.out.println("Enter Age:-");
for(int i=0;i<6;i++)
{
System.out.print("age: "+(i+1)+")");
age[i]=br.readLine();
}
System.out.println("Enter Gender:-");
for(int i=0;i<6;i++)
{
System.out.print("person: "+(i+1)+")");
gen[i]=br.readLine();

}
System.out.println("Enter start station:-");
ss=br.readLine();

System.out.println("Enter destination station:-");
ds=br.readLine();
//System.out.println("Enter date of journey:-");
//dj=br.readLine();

}
}

write in another class

import java.util.Calendar;
import java.util.Date;
import java.io.*;
public class date
{
int yy,mm,dd;

boolean f;
public void displ()throws IOException
{
Calendar c=Calendar.getInstance();
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
for(;;)
{
System.out.println("Enter year:-");
yy=Integer.parseInt(br.readLine());
System.out.println("Enter month:-");
mm=Integer.parseInt(br.readLine());
System.out.println("Enter day:-");
dd=Integer.parseInt(br.readLine());
System.out.println("Today is:-"+c.get(Calendar.DATE)+"/"+(c.get(Calendar.MONTH)+1)+"/"+c.get(Calendar.YEAR));


int mmst=c.get(Calendar.MONTH)+1;
int md=mm-mmst;
int ddst=c.get(Calendar.DATE);

int ddd=(dd-ddst)+md*30;

System.out.println("differ date="+ddd);
System.out.println("requested date is:-"+dd+"/"+mm+"/"+yy);

if(ddd>=60||ddd<1)
{
System.out.println("Not possible before 60 days or before current date:RenEnter new date");

}
else{
System.out.println("VALID DATE...NOW CHECK THE VACANT BERTH");
break;
}
}
}
}

/*OUTPUT
*

________________________________________________________________
NAME AGE GENDER

Raj 38 M
Monu 19 M
Sonu 40 M



_________________________________________________________________
Train name: RAJDHANI
date of journey :16/04/2011
Departure from:HOWRAH
Destination: DLH
coach no.S1
=================================================================
Today is:-10/10/2021
HAVE A HAPPY JOURNEY
_________________________________________________________________
Do you want to continue(y/n)?