406 lines
24 KiB
Java
406 lines
24 KiB
Java
School Management System
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import java.awt.*;
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import java.io.*;
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import java.util.*;
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import javax.swing.*;
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import javax.swing.event.*;
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import java.awt.event.*;
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public class ProjectX extends JFrame implements ChangeListener,
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ActionListener
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{
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static int choice = 0;
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static String line = "--------------------------------
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";
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DataInputStream inputData = new DataInputStream(System.in);
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private Registration studentDetails = new Registration();
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int topScore = studentDetails.getTopScore();
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int passMarks = studentDetails.getPassMarks();
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int firstClass = studentDetails.getFirstClass();
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int secondClass = studentDetails.getSecondClass();
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JTabbedPane tabbedPane = new JTabbedPane();
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JLabel statusLabel = new JLabel();
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JLabel titleLabel = new JLabel("Student Software Beta Edition");
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JPanel addStudentPanel = new JPanel();
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JTextField studentName = new JTextField();
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JTextField physicsMarks = new JTextField();
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JTextField biologyMarks = new JTextField();
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JTextField mathsMarks = new JTextField();
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JButton submitDetails = new JButton("Submit Details");
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JPanel studentDetailsPanel = new JPanel();
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JTextField studentID1 = new JTextField();
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JTextArea studentInfo = new JTextArea();
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JButton submitID1 = new JButton("Submit ID");
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JPanel studentGradePanel = new JPanel();
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JTextField studentID2 = new JTextField();
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JTextArea studentGrade = new JTextArea();
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JButton submitID2 = new JButton("Submit ID");
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JPanel numberPassedPanel = new JPanel();
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JTextArea studentPassed = new JTextArea();
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JPanel classTopperPanel = new JPanel();
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JTextArea studentTopper = new JTextArea();
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public ProjectX(String frameTitle)
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{
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super(frameTitle);
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setResizable(true);
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setSize(400,400);
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submitDetails.addActionListener(this);
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submitID1.addActionListener(this);
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submitID2.addActionListener(this);
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getContentPane().setLayout(new BorderLayout());
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getContentPane().add(titleLabel,"North");
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tabbedPane.addTab("Add Student",addStudentPanel);
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addStudentPanel.setLayout(new GridLayout(8,2,5,5));
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addStudentPanel.add(new JLabel("Student Name: "));
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addStudentPanel.add(studentName);
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addStudentPanel.add(new JLabel("Physics Marks: "));
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addStudentPanel.add(physicsMarks);
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addStudentPanel.add(new JLabel("Biology Marks: "));
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addStudentPanel.add(biologyMarks);
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addStudentPanel.add(new JLabel("Maths Marks: "));
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addStudentPanel.add(mathsMarks);
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addStudentPanel.add(submitDetails);
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tabbedPane.addTab("Student Details",studentDetailsPanel);
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studentDetailsPanel.add(new JLabel("Enter Student ID: "));
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studentDetailsPanel.add(studentID1);
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studentDetailsPanel.add(submitID1);
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studentDetailsPanel.add(new JLabel("Student Details:"));
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studentDetailsPanel.add(studentInfo);
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tabbedPane.addTab("Student Grade",studentGradePanel);
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studentGradePanel.setLayout(new GridLayout(5,2,5,5));
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studentGradePanel.add(new JLabel("Enter Student ID: "));
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studentGradePanel.add(studentID2);
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studentGradePanel.add(submitID2);
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studentGradePanel.add(new JLabel("Student Grade:"));
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studentGradePanel.add(studentGrade);
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tabbedPane.addTab("Passed Student",numberPassedPanel);
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numberPassedPanel.setLayout(new GridLayout(2,2,5,5));
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numberPassedPanel.add(new JLabel("Number of Student Passed: "));
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numberPassedPanel.add(studentPassed);
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tabbedPane.addTab("Class Topper",classTopperPanel);
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classTopperPanel.setLayout(new GridLayout(2,2,5,5));
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classTopperPanel.add(new JLabel("Here are the class Toppers: "));
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classTopperPanel.add(studentTopper);
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tabbedPane.addChangeListener(this);
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getContentPane().add(tabbedPane,"Center");
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statusLabel.setText("Status: Normal");
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getContentPane().add(statusLabel,"South");
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setVisible(true);
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}
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public static void main(String args[])
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{
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ProjectX outputScreen = new ProjectX("Case Study");
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}
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public String setStudentInfo()
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{
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int id = studentDetails.addStudent(studentName.getText(),
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Integer.parseInt(physicsMarks.getText()),
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Integer.parseInt(biologyMarks.getText()),
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Integer.parseInt(mathsMarks.getText()));
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return ("
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" +
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line +
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"Record Created For " + studentName +
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"
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" +
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"Student ID: " + id +
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"
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" +
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line );
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}
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public String getStudentInfo()
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{
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int id = Integer.parseInt(studentID1.getText());
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if(studentDetails.getStudentDetails(id))
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return ("
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" +
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line +
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"Student Details
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" +
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line +
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"Student ID:" + " " + id + "
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" +
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"Student Name:" + " " + studentDetails.studentName + "
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" +
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"Physics Marks:" + " " + studentDetails.physicsMarks + "
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" +
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"Biology Marks:" + " " + studentDetails.biologyMarks + "
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" +
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"Maths Marks:" + " " + studentDetails.mathsMarks + "
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" +
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line );
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else
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return("
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Records Not Found for ID " + id);
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}
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public String getStudentGrade()
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{
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int id = Integer.parseInt(studentID2.getText());
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studentDetails.getStudentDetails(id);
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String grade;
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if(studentDetails.studentName == null)
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{
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System.out.println("
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Records Not Found for ID " + id);
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return null;
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}
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if(studentDetails.physicsMarks < passMarks ||
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studentDetails.biologyMarks < passMarks || studentDetails.mathsMarks <
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passMarks)
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{
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grade = "Failed";
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}
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else
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{
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int avgMarks = (studentDetails.physicsMarks +
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studentDetails.biologyMarks + studentDetails.mathsMarks)/3;
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if(avgMarks >= passMarks && avgMarks < secondClass) grade = "Pass
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Class";
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else if(avgMarks >= secondClass && avgMarks < firstClass) grade =
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"Second Class";
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else if(avgMarks >= firstClass && avgMarks < topScore) grade = "First
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Class";
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else grade = "Distinction";
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}
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return(line + "Grade For " + studentDetails.studentName + " is " + grade
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+ "
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" + line);
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}
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public String getNumberPasses()
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{
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int lastID = Registration.getNextID() -1;
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boolean passed = true;
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int numberPassed = 0;
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for(int id = 1; id <= lastID; id++)
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{
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studentDetails.getStudentDetails(id);
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if(studentDetails.physicsMarks >= passMarks &&
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studentDetails.biologyMarks >= passMarks && studentDetails.mathsMarks >=
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passMarks) numberPassed++;
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}
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return(line + "Number of Student Passed: " + numberPassed + "
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" +
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line);
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}
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public String getClassTopper()
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{
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int lastID = Registration.getNextID() -1;
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String classTopper;
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StringBuffer buffer = new StringBuffer(500);
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int topMarks = 0;
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for(int id = 1; id <= lastID; id++)
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{
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studentDetails.getStudentDetails(id);
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int studentMarks = studentDetails.physicsMarks +
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studentDetails.biologyMarks + studentDetails.mathsMarks;
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if(studentMarks > topMarks) topMarks = studentMarks;
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}
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buffer.append(line + "Student Having Top Marks:
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");
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for(int id = 1; id <= lastID; id++)
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{
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studentDetails.getStudentDetails(id);
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int studentMarks = studentDetails.physicsMarks +
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studentDetails.biologyMarks + studentDetails.mathsMarks;
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if(studentMarks == topMarks)
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{
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buffer.append(studentDetails.studentName + " Having Total Marks: " +
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topMarks + "
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");
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}
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}
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buffer.append(line);
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return(buffer.toString());
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}
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public void stateChanged(ChangeEvent e)
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{
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switch(tabbedPane.getSelectedIndex())
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{
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case 3: studentPassed.setText(getNumberPasses());
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break;
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case 4: studentTopper.setText(getClassTopper());
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break;
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}
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}
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public void actionPerformed(ActionEvent e)
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{
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if(e.getSource() == submitID1)
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{
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studentInfo.setText(getStudentInfo());
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}
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else if(e.getSource() == submitID2)
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{
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studentGrade.setText(getStudentGrade());
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}
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if(e.getSource() == submitDetails)
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{
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setStudentInfo();
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}
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}
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}
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//Registration Class
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class Registration
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{
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private int topScore = 90;
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private int passMarks = 35;
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private int firstClass = 65;
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private int secondClass = 45;
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private static String idFile = "id.dat";
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private static String studentFile = "studentfile.dat";
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public int id;
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public String studentName;
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public int physicsMarks;
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public int biologyMarks;
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public int mathsMarks;
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public int addStudent(String studentName, int physicsMarks, int
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biologyMarks, int mathsMarks)
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{
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int id = 0;
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try
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{
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FileWriter fileOutput = new FileWriter(Registration.studentFile,true);
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id = Registration.getNextID();
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String buffer = id + "|" + studentName + "|" + physicsMarks + "|" +
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biologyMarks + "|" + mathsMarks + "
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";
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fileOutput.write(buffer);
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fileOutput.close();
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Registration.setID(id);
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}
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catch(IOException e)
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{
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System.err.println(e.toString());
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System.exit(1);
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}
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return id;
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}
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//Function to get the details of a student given the ID
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public boolean getStudentDetails(int id)
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{
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try
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{
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FileReader fileInput = new FileReader(Registration.studentFile);
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BufferedReader br = new BufferedReader(fileInput);
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{
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String str;
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while((str = br.readLine()) != null)
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{
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StringTokenizer fields = new StringTokenizer(str,"|");
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if(Integer.parseInt(fields.nextToken()) == id)
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{
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this.id = id;
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this.studentName = fields.nextToken();
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this.physicsMarks = Integer.parseInt(fields.nextToken());
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this.biologyMarks = Integer.parseInt(fields.nextToken());
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this.mathsMarks = Integer.parseInt(fields.nextToken());
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return true;
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}
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}
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}
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}
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catch(IOException e)
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{
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System.err.println(e.toString());
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System.exit(1);
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}
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return false;
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}
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public int getTopScore()
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{
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return topScore;
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}
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public int getPassMarks()
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{
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return passMarks;
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}
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public int getFirstClass()
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{
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return firstClass;
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}
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public int getSecondClass()
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{
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return secondClass;
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}
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//Function to get the next ID available
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public static int getNextID()
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{
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int id = 0;
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try
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{
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RandomAccessFile studentIDFile = new
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RandomAccessFile(Registration.idFile,"rw");
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if(studentIDFile.length() == 0)
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{
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id = 0;
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}
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else id = studentIDFile.readInt();
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id++;
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studentIDFile.close();
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}
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catch(IOException e)
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{
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System.err.println(e.toString());
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System.exit(1);
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}
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return id;
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}
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//Function to Store current ID in a file
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public static void setID(int id)
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{
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try
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{
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RandomAccessFile studentIDFile = new
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RandomAccessFile(Registration.idFile,"rw");
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studentIDFile.seek(0);
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studentIDFile.writeInt(id);
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studentIDFile.close();
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}
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catch(IOException e)
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{
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System.err.println(e.toString());
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System.exit(1);
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}
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}
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}
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