Practical 18 : Prepare a use case diagram and sequence diagram for a computer email system

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Practical 11 : Create a class called Student. Write a student manager program to manipulate the student information from files by using FileInputStream and FileOutputStream

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Program : import java.io.FileInputStream; import java.io.FileOutputStream; public class practical11 {     public static void main(String[] args) {         System.out.println("-------Writing Data in File-------");         try {             FileOutputStream fout = new FileOutputStream("stdinfo.txt");             String str = "Nmae : Pruthviraj, Stream : INFORMATION TECHNOLOGY, Sem : 5th Sem";             byte b[] = str.getBytes();             fout.write(b);             fout.close();             System.out....
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