Problem in SCThread2.java about java-se

[igagankapoor]

code below is improved version

class WhiteBoard {
    // ... (rest of the class remains the same)

    synchronized public String read(Student s) {
        while (count == 0) {
            try {
                wait();
            } catch (Exception e) {
            }
        }
        String t = text;
        count--;
        if (count == 0) {
            notify();
        }

        // Set the flag for this student after reading
        String name = s.name;
        int idx = Integer.parseInt(name.substring(0, 1));
        flag[idx] = true;

        return t;
    }
}

class Student extends Thread {
    // ... (rest of the class remains the same)

    public void run() {
        String text;

        wb.attendance();

        do {
            text = wb.read(this); // Pass the student object
            System.out.println(name + " Reading " + text);
            System.out.flush();
        } while (!text.equals("end"));
    }
}