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Dhruv-CmdsDhruv-Cmds
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added project made using diff class
1 parent 2934322 commit 9e014d6

9 files changed

Lines changed: 401 additions & 0 deletions

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‎JavaBasicPrograms/ClassroomSystem/ClassRoom.java‎

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package ClassroomSystem;
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public class ClassRoom {
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Student[] students = new Student[5];
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int counts = 0;
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void addStudents(Student s){
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if(counts >= students.length){
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System.out.println("Classroom is full.");
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return;
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}
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students[counts] = s;
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counts++;
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System.out.println(s.name + " added to classroom." );
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}
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void showStudens(){
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if(counts == 0){
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System.out.println("No Studens in classroom yet.");
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return;
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}
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System.out.println("Students in classroom: ");
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for (int i = 0 ; i < counts ; i++){
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students[i].showInfo();
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}
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}
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}

‎JavaBasicPrograms/ClassroomSystem/Main.java‎

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package ClassroomSystem;
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public class Main {
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public static void main(String[] args) {
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// Classroom System
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ClassRoom room = new ClassRoom();
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Student student1 = new Student("Alice", 101);
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Student student2 = new Student("Bob", 102);
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Student student3 = new Student("Charlie", 103);
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System.out.println("-------------------------");
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room.addStudents(student1);
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room.addStudents(student2);
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room.addStudents(student3);
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System.out.println("-------------------------");
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room.showStudens();
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}
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}

‎JavaBasicPrograms/ClassroomSystem/Student.java‎

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package ClassroomSystem;
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public class Student {
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String name;
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int id;
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Student(String name , int id){
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this.name = name;
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this.id = id;
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}
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void showInfo(){
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System.out.println("Name: " + name + " Id: " + id);
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}
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}

‎JavaBasicPrograms/ConsoleBankingSystem/Main.java‎

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package ConsoleBankingSystem;
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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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// CONSOLE BANKING SYSTEM
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Scanner scanner = new Scanner(System.in);
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double balance = 15000;
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double amount;
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int choice;
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int transactionCount = 0;
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String[] history = new String[100];
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transactionCount = scanner.nextInt();
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do{
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showmanu();
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System.out.print("Choose options (1-4): ");
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choice = scanner.nextInt();
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switch (choice) {
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case 1 -> {
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System.out.printf("Available balance is: %.2f\n" , balance);
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}
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case 2 -> {
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System.out.print("Enter deposite amount: ");
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amount = scanner.nextDouble();
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scanner.nextLine();
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if(amount > 0) {
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balance = deposite(balance, amount);
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history[transactionCount] = "Deposite: $" + amount;
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transactionCount++;
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}
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else {
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System.out.println("Invalid deposite amount");
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}
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}
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case 3 -> {
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System.out.print("Enter amount for withdrawn: ");
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amount = scanner.nextDouble();
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scanner.nextLine();
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if (amount > 0 && amount <= balance) {
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balance = withdraw(balance, amount);
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history[transactionCount] = "Withdrew: $" + amount;
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transactionCount++;
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}
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else {
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System.out.println("Invalid withdrawal amount");
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}
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}
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case 4 -> {
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if (transactionCount == 0) {
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System.out.println("No transactions yet.");
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} else {
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System.out.println("---- Transaction History ----");
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for (int i = 0; i < transactionCount; i++) {
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System.out.println(history[i]);
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}
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}
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}
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case 5 -> System.out.println("Thank you for coming! Have a good day!");
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default -> System.out.println("Invalid choice!");
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}
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}
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while (choice != 5);
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scanner.close();
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}
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static void showmanu() {
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System.out.println("--------------------------");
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System.out.println("Welcome to BANKING SYSTEM ");
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System.out.println("--------------------------");
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System.out.println("1. Check balance");
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System.out.println("2. Deposite");
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System.out.println("3. Withdraw");
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System.out.println("4. History");
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System.out.println("5. Exit");
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}
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static double deposite (double balance , double amount){
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balance += amount;
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System.out.println("Amount added to your account.");
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return balance;
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}
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static double withdraw (double balance , double amount){
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balance -= amount;
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System.out.println("Amount withdrawn successfully from your account.");
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return balance;
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}
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}

‎JavaBasicPrograms/LibrarySystem/Book.java‎

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package LibrarySystem;
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public class Book {
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String title;
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int id;
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Book(String bookName , int id){
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this.title = bookName;
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this.id = id;
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}
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void showInfo(){
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System.out.println("Title: " + title + " Id: " + id);
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}
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}

‎JavaBasicPrograms/LibrarySystem/Library.java‎

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package LibrarySystem;
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public class Library {
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Book [] book = new Book[5];
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int count = 0;
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void addBooks(Book b){
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if(count >= book.length){
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System.out.println("Library is full.");
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return;
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}
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book[count] = b;
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count++;
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System.out.println(b.title + " Title added to library.");
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}
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void showBooks(){
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if (count == 0){
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System.out.println("No books in library.");
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return;
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}
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System.out.println("Books in library:");
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for(int i = 0; i < count; i++){
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book[i].showInfo();
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}
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}
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void removeBooks(int id){
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for (int i = 0; i < count; i++){
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if(book[i].id == id){
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for (int j = i; j < count - 1; j++) {
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book[j] = book[j + 1];
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}
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book[count - 1] = null;
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count--;
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System.out.println("Removed Book from library.");
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return;
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}
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}
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System.out.println("Book not found.");
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}
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}

‎JavaBasicPrograms/LibrarySystem/Main.java‎

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package LibrarySystem;
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public class Main {
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public static void main(String[] args) {
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// Library System
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Library library = new Library();
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Book book1 = new Book("Java Basics", 1);
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Book book2 = new Book("OOP Concepts", 2);
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Book book3 = new Book("Data Structures", 3);
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System.out.println("-------------------------------------");
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library.addBooks(book1);
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library.addBooks(book2);
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library.addBooks(book3);
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System.out.println("-------------------------------------");
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library.showBooks();
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System.out.println("-------------------------------------");
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library.removeBooks(2);
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System.out.println("-------------------------------------");
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library.showBooks();
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System.out.println("-------------------------------------");
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}
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}

‎JavaBasicPrograms/MiniUniversityManagementSystem/Main.java‎

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package MiniUniversityManagementSystem;
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public class Main{
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public static void main(String[] args) {
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// Mini University Management System
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Studend s1 = new Studend("Alice Johnson", 20, 101, "Computer Science");
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Studend s2 = new Studend("Bob Smith", 21, 102, "Information Technology");
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Studend s3 = new Studend("Charlie Brown", 22, 103, "Mathematics");
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Studend s4 = new Studend("David Miller", 23, 104, "Physics");
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Studend s5 = new Studend("Emma Davis", 19, 105, "Biology");
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Studend s6 = new Studend("Liam Wilson", 20, 106, "Engineering");
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Studend s7 = new Studend("Sophia Taylor", 21, 107, "Business");
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Studend s8 = new Studend("Noah Anderson", 22, 108, "Chemistry");
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Studend s9 = new Studend("Olivia Thomas", 23, 109, "Psychology");
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Studend s10 = new Studend("Ethan Moore", 20, 110, "Economics");
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System.out.println("--------------------------------");
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s1.addFriend(s1);
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System.out.println("--------------------------------");
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s1.addFriend(s2);
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System.out.println("--------------------------------");
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s1.addFriend(s3);
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System.out.println("--------------------------------");
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s1.addFriend(s4);
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System.out.println("--------------------------------");
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s1.addFriend(s5);
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System.out.println("--------------------------------");
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s1.addFriend(s6);
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System.out.println("--------------------------------");
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s1.addFriend(s7);
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System.out.println("--------------------------------");
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s1.addFriend(s8);
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System.out.println("--------------------------------");
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s1.addFriend(s9);
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System.out.println("--------------------------------");
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s1.addFriend(s10);
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System.out.println("--------------------------------");
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s1.displayInfo();
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System.out.println("--------------------------------");
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s2.displayInfo();
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System.out.println("--------------------------------");
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s3.displayInfo();
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System.out.println("--------------------------------");
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s4.displayInfo();
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System.out.println("--------------------------------");
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s5.displayInfo();
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System.out.println("--------------------------------");
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s6.displayInfo();
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System.out.println("--------------------------------");
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s7.displayInfo();
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System.out.println("--------------------------------");
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s8.displayInfo();
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System.out.println("--------------------------------");
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s9.displayInfo();
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System.out.println("--------------------------------");
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s10.displayInfo();
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System.out.println("--------------------------------");
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s1.showFriend();
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}
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}

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