Hostel Management System

Hostel Management/Hostel-Management-main/Admin.java

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+package definition;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.LinkedHashSet;
+public class Admin {
+	LinkedHashSet<Student> hs ;
+	Room r= new Room() ;
+	SubmitAttendance sa=new SubmitAttendance();
+	public Admin(LinkedHashSet<Student> hs,Room r, SubmitAttendance sa)
+	{
+		this.hs=hs;
+		this.r=r ;
+		this.sa=sa;
+	}
+	public boolean login() throws IOException
+	{
+		String name="a";
+		String pass="a";
+		String u_name;
+		String u_pass;
+		InputStreamReader isr=new InputStreamReader(System.in);
+		BufferedReader br=new BufferedReader(isr);
+		System.out.println("Enter username");
+		u_name=br.readLine();
+		System.out.println("Enter password");
+		u_pass=br.readLine();
+		if(u_name.compareTo(name)==0 && u_pass.compareTo(pass)==0)
+		{
+			return true;
+		}
+		else
+		{
+			return false;
+		}
+	}
+	public int menu() throws IOException
+	{
+		int choice=0;
+		do
+		{
+			InputStreamReader isr=new InputStreamReader(System.in);
+			BufferedReader br=new BufferedReader(isr);
+			System.out.println("Enter your choice");
+			System.out.println("1.Display all records");
+			System.out.println("2.Display vacancy");
+			System.out.println("3.Display attendance");
+			System.out.println("4.Search record");
+			System.out.println("5.Fee paid status");
+			System.out.println("0. Exit");
+			try 
+			{
+				choice=Integer.parseInt(br.readLine());
+			}
+			catch(NumberFormatException e)
+			{
+				System.out.println("Please enter a valid number");
+				choice=-1;
+			}
+		}while(choice < 0 || choice > 5 );
+		return choice;
+	}
+	public void call_menu() throws IOException
+	{
+		InputStreamReader isr=new InputStreamReader(System.in);
+		BufferedReader br=new BufferedReader(isr);
+		int choice =0 ;
+		int flag=0;
+		int id=0;
+		do
+		{
+			choice = menu();
+			switch(choice)
+			{
+				case 1:
+					if (hs.isEmpty())
+					{
+						System.out.println("No records found");
+						break ;
+					}
+					for(Student b:hs)
+				    {  
+				    	System.out.println(b.id+" "+b.name+" "+b.roomno+" "+b.fees+" "+b.mobile_no);  
+				    } 
+				    break ;
+				case 2:
+					r.displayAllRoomDetails();
+					break ;
+				case 3 :
+					if (hs.isEmpty())
+					{
+						System.out.println("No records found");
+						break ;
+					}
+					System.out.println("Enter id: ");
+					flag=0;
+					do
+					{
+						try
+						{
+							id=Integer.parseInt(br.readLine());
+							flag=1;
+						}
+						catch(NumberFormatException e)
+						{
+							System.out.println("Invalid id");
+							System.out.println("Please enter correct id again");
+						}
+					}while(flag!=1);
+
+					sa.bdisplayAttendance(id);
+					break ;
+				case 4:
+					if (hs.isEmpty())
+					{
+						System.out.println("No records found");
+						break ;
+					}
+					System.out.println("Enter id: ");
+					flag=0;
+					do
+					{
+						try
+						{
+							id=Integer.parseInt(br.readLine());
+							flag=1;
+						}
+						catch(NumberFormatException e)
+						{
+							System.out.println("Invalid id");
+							System.out.println("Please enter correct id again");
+						}
+					}while(flag!=1);
+					displayById(id);
+					break;
+				case 5:
+					if (hs.isEmpty())
+					{
+						System.out.println("No records found");
+						break ;
+					}
+					int fchoice=0;
+					do
+					{
+						System.out.println("Enter choice:\n1: Students who have paid the fees");
+						System.out.println("2: Students who have not paid the fees");
+						try 
+						{
+							fchoice=Integer.parseInt(br.readLine());
+						}
+						catch(NumberFormatException e)
+						{
+							System.out.println("Please enter a valid number");
+							fchoice=-1;
+						}
+					}while(fchoice < 1 || fchoice > 2 );
+					displayFeeStatus(fchoice);
+					break;
+				case 0:
+					break ;
+			}
+		}while(choice!=0);
+	}
+
+	public void displayById(int id_check)
+	{
+		int flag=0;
+		for(Student b:hs)
+	    {  
+			if(id_check==b.id)
+			{
+				System.out.println(b.id+" "+b.name+" "+b.roomno);
+				System.out.println("Total fees 1,00,000\nFees paid : "+b.fees+" Fees remaining :"+(100000-b.fees));
+				flag=1;
+				break ;
+			}
+	    }
+		if(flag!=1)
+		{
+			System.out.println("Record not found");
+		}
+	}
+
+	public void displayFeeStatus(int fchoice)
+	{
+		if(fchoice==1)
+		{
+			System.out.println("Name\tStatus");
+			for(Student b:hs)
+			{
+				if(b.fees==100000f)
+				{
+					System.out.println(b.name+"\tPaid");
+				}
+			}
+		}
+		else if(fchoice==2)
+		{
+			System.out.println("Name\tTotal Fees\tFees Paid\tFees Remaining");
+			for(Student b:hs)
+			{
+				if(b.fees!=100000f)
+				{
+					System.out.println(b.name+"\t1,00,000\t"+b.fees+"\t\t"+(100000-b.fees));
+				}
+			}
+		}
+	}
+}

Hostel Management/Hostel-Management-main/Attendance.java

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+package definition;
+import java.util.ArrayList;
+
+public class Attendance {
+	ArrayList<Integer> att1= new ArrayList<Integer>();
+
+	public void giveAttendance(int date)
+	{
+		att1.add(date);
+	}
+
+	public void display()
+	{
+		int i=0;
+		for(i=1;i<=31;i++)
+		{
+			if(att1.contains(i))
+			{
+				System.out.println("Day: "+(i)+" Record: Present");
+			}
+			else
+			{
+				System.out.println("Day: "+(i)+" Record: Absent");
+			}
+		}
+	}
+}

Hostel Management/Hostel-Management-main/README.md

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+# Hostel-Management
+For the past few years, the number of educational institutions is increasing rapidly. Thereby the number of hostels is also increasing for the accommodation of the students 
+studying in this institution. And hence there is a lot of strain on the person who is running the hostel and software is not usually used in this context.
+This particular project deals with the problems of managing a hostel and avoids the problems which occur when carried manually. Hence reduces the load on the person 
+handling this. It deals with the following problems:
+
+• Time consuming
+
+• Human error
+
+• Slow process
+
+• Poor quality
+
+• Data inconsistency
+
+• The process of maintaining records of students is manual and time-consuming
+
+• Maintaining attendance and fee status is difficult
+
+• Checking vacancy in a hostel is a bit tedious if all the process is handwritten
+
+• Getting a summary of all records is also not possible in a traditional record-keeping system
+
+• The chances of occurring errors are more. So the records must be accurate, informative, and dynamically updated.
+
+We have designed a Hostel Management System which can be used by Hostels for keeping a track of all the students present in the hostel. 
+Nowadays, all the records in hostels are handwritten and maintained in registers which is not feasible in the long run. If you want to look for a record of a specific student 
+you would have to spend hours looking through papers. 
+
+We have made work tremendously easier, all you have to do is to enter the id of the student and all the details will be displayed to you within a second. 
+We have accomplished this by using data structures, algorithms, and numerous input validations.
+
+Data Structures Used:
+LinkedHashSet: 
+
+We wanted Fast searching and Insertion, also we had a large amount of data and we wished to maintain insertion order. 
+So we went for LinkedHashSet which has a O(1) time complexity.
+
+
+ArrayList:  
+Java ArrayList class uses a dynamic array for storing the elements. It is like an array, but there is no size limit. 
+We can add or remove elements anytime . Methods of arraylist are non-synchronized which implies at a time multiple threads are allowed and hence provides high performance 
+
+Sites/Books used for reference:
+
+GeeksForGeeks
+StackOverflow
+Big JAVA
+W3Schools
+Tutorialspoint
+Javatpoint
+JAVA Documentation

Hostel Management/Hostel-Management-main/Room.java

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+package definition;
+public class Room
+{
+	int arr[] =new int[10] ;
+	public Room()
+	{
+
+	}
+	public boolean allot(int roomno)
+	{
+		if(arr[roomno-1]<3)
+		{
+			arr[roomno-1]++;
+			return true;
+		}
+		else if(arr[roomno-1]>=3)
+		{
+			System.out.println("Sorry, this room is full. Please enter another room no");
+		}
+		return false;
+	}
+	public void displayAllRoomDetails()
+	{
+		System.out.println("Room No   No of occupants   Vacancy");
+		for(int i=0 ;i<10 ;i++)
+		{
+			System.out.println((i+1)+"\t        "+arr[i]+"\t      "+(3-arr[i]));
+		}
+	}
+
+}