feat: Complete timeout example for threading

.idea/.gitignore

@@ -1,10 +0,0 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Ignored default folder with query files
-/queries/
-# Datasource local storage ignored files
-/dataSources/
-/dataSources.local.xml
-# Editor-based HTTP Client requests
-/httpRequests/

.idea/compiler.xml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="CompilerConfiguration">
-    <annotationProcessing>
-      <profile name="Maven default annotation processors profile" enabled="true">
-        <sourceOutputDir name="target/generated-sources/annotations" />
-        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
-        <outputRelativeToContentRoot value="true" />
-        <module name="WS-07-Multithreading-Basics-and-Hashing" />
-      </profile>
-    </annotationProcessing>
-  </component>
-</project>

.idea/encodings.xml

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="Encoding">
-    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
-    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
-  </component>
-</project>

.idea/jarRepositories.xml

@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RemoteRepositoriesConfiguration">
-    <remote-repository>
-      <option name="id" value="central" />
-      <option name="name" value="Central Repository" />
-      <option name="url" value="https://maven.devneeds.ir/" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="central" />
-      <option name="name" value="Maven Central repository" />
-      <option name="url" value="https://repo1.maven.org/maven2" />
-    </remote-repository>
-    <remote-repository>
-      <option name="id" value="jboss.community" />
-      <option name="name" value="JBoss Community repository" />
-      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
-    </remote-repository>
-  </component>
-</project>

.idea/misc.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="MavenProjectsManager">
-    <option name="originalFiles">
-      <list>
-        <option value="$PROJECT_DIR$/pom.xml" />
-      </list>
-    </option>
-  </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="25" project-jdk-type="JavaSDK" />
-</project>

.idea/vcs.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="VcsDirectoryMappings">
-    <mapping directory="" vcs="Git" />
-  </component>
-</project>

src/main/java/dev/Main.java

@@ -4,19 +4,19 @@ import dev.service.StudentManager;
 import dev.thread.StudentLoader;
 import dev.utils.FileManager;
 
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Scanner;
 
 public class Main {
 
-    public static void main(String[] args) throws Exception
+    public static void main(String[] args) throws Exception {
-    {
+
         Scanner scanner = new Scanner(System.in);
+
         StudentManager manager = new StudentManager();
 
-        while (true)
+        while (true) {
-        {
+
             System.out.println("""
                     1.Load students
                     2.Search student
@@ -27,73 +27,73 @@ public class Main {
 
             int choice = scanner.nextInt();
 
-            switch (choice)
+            switch (choice) {
-            {
+
-                case 1 ->
+                case 1 -> {
-                {
+
                     List<String> data = FileManager.loadStudents("students.txt");
 
-                    if (data.isEmpty())
+                    // TODO:
-                    {
+
-                        System.out.println("No data found in file.");
+                    // Split data into 3 parts
-                        break;
+
+                    List<String> part1 = null;
+
+                    List<String> part2 = null;
+
+                    List<String> part3 = null;
+
+                    // TODO:
+
+                    StudentLoader t1 = null;
+
+                    StudentLoader t2 = null;
+
+                    StudentLoader t3 = null;
+
+                    // TODO:
+
+                    // start()
+
+                    // join()
+
+                    // merge results
+
                 }
 
-                    // TODO: Split data into 3 parts
+                case 2 -> {
-                    int totalSize = data.size();
-                    int chunkSize = (int) Math.ceil(totalSize / 3.0);
 
-                    List<String> part1 = data.subList(0, Math.min(chunkSize, totalSize));
-                    List<String> part2 = data.subList(Math.min(chunkSize, totalSize), Math.min(2 * chunkSize, totalSize));
-                    List<String> part3 = data.subList(Math.min(2 * chunkSize, totalSize), totalSize);
-
-                    StudentLoader t1 = new StudentLoader(part1);
-                    StudentLoader t2 = new StudentLoader(part2);
-                    StudentLoader t3 = new StudentLoader(part3);
-
-                    t1.start();
-                    t2.start();
-                    t3.start();
-
-                    t1.join();
-                    t2.join();
-                    t3.join();
-
-                    manager.addStudents(t1.getStudents());
-                    manager.addStudents(t2.getStudents());
-                    manager.addStudents(t3.getStudents());
-
-                    System.out.println("Students loaded successfully using 3 threads.");
-                }
-
-                case 2 ->
-                {
                     System.out.print("ID: ");
+
                     int id = scanner.nextInt();
-                    var student = manager.searchStudent(id);
+
-                    if (student != null)
+                    System.out.println(manager.searchStudent(id));
-                    {
+
-                        System.out.println("Found: " + student);
-                    }
-                    else
-                    {
-                        System.out.println("Student not found.");
-                    }
                 }
 
-                case 3 ->
+                case 3 -> {
-                {
+
                     System.out.print("ID: ");
+
                     int id = scanner.nextInt();
+
                     boolean removed = manager.removeStudent(id);
-                    System.out.println("Removed: " + removed);
+
+                    System.out.println(removed);
+
                 }
 
                 case 4 ->
                         manager.printStudents();
 
-                case 5 -> {return;}
+                case 5 -> {
+                    return;
                 }
+
             }
+
         }
+
+    }
+
 }

src/main/java/dev/model/Student.java

@@ -1,10 +1,13 @@
 package dev.model;
 
-public class Student
+public class Student {
-{
+
     private final int id;
+
     private final String name;
+
     private final String major;
+
     private final double gpa;
 
     public Student(
@@ -36,22 +39,37 @@ public class Student
     }
 
     @Override
-    public int hashCode() {return id % 97;}
+    public int hashCode() {
 
-    @Override
+        // TODO:
-    public boolean equals(Object obj)
+        // Return custom hash
-    {
-        if (this == obj) return true;
-        if (obj == null || getClass() != obj.getClass()) return false;
 
-        Student other = (Student) obj;
+        // Example:
+        // return id % 97;
 
-        return this.id == other.id;
+        return 0;
     }
 
     @Override
-    public String toString()
+    public boolean equals(Object obj) {
-    {
+
+        // TODO:
+
+        // Step 1:
+        // Check null
+
+        // Step 2:
+        // Convert obj to Student
+
+        // Step 3:
+        // Compare IDs
+
+        return false;
+    }
+
+    @Override
+    public String toString() {
+
         return "Student{" +
                 "id=" + id +
                 ", name='" + name + '\'' +
@@ -59,4 +77,5 @@ public class Student
                 ", gpa=" + gpa +
                 '}';
     }
+
 }

src/main/java/dev/service/StudentManager.java

@@ -1,53 +1,55 @@
 package dev.service;
 
 import dev.model.Student;
+
 import java.util.ArrayList;
 
-public class StudentManager
+
-{
+public class StudentManager {
+
     private final ArrayList<Student> students = new ArrayList<>();
 
-    public void addStudents(ArrayList<Student> newStudents)
+    public void addStudents(ArrayList<Student> newStudents) {
-    {
+
-        students.addAll(newStudents);
+        // TODO:
+
+        // Merge students
+
+        // Hint:
+        // addAll()
+
     }
 
-    public Student searchStudent(int id)
+    public Student searchStudent(int id) {
-    {
+
-        for (Student student : students)
+        // TODO:
-        {
+
-            if (student.getId() == id) {return student;}
+        // Loop through students
-        }
+
+        // Compare IDs
+
         return null;
     }
 
-    public boolean removeStudent(int id)
+    public boolean removeStudent(int id) {
-    {
-        Student foundStudent = null;
 
-        for (Student student : students)
+        // TODO:
-        {
-            if (student.getId() == id)
-            {
-                foundStudent = student;
-                break;
-            }
-        }
 
-        if (foundStudent != null)
+        // Find student
-        {
+
-            students.remove(foundStudent);
+        // Remove student
-            return true;
-        }
 
         return false;
     }
 
-    public void printStudents()
+    public void printStudents() {
-    {
+
-        for (Student student : students)
+        for (Student student : students) {
-        {
+
             System.out.println(student);
+
         }
+
     }
+
 }

src/main/java/dev/thread/StudentLoader.java

@@ -1,51 +1,59 @@
 package dev.thread;
 
+
+
 import dev.model.Student;
+
 import java.util.ArrayList;
 import java.util.List;
 
-public class StudentLoader extends Thread
+public class StudentLoader extends Thread {
-{
+
     // Assigned file lines
+
     private final List<String> lines;
 
     // Local student storage
+
     private final ArrayList<Student> students = new ArrayList<>();
 
-    public StudentLoader(List<String> lines) {this.lines = lines;}
+    public StudentLoader(List<String> lines) {
+
+        this.lines = lines;
+    }
 
     @Override
-    public void run()
+    public void run() {
-    {
-        for (String line : lines)
-        {
-            if (line == null || line.trim().isEmpty()) {continue;}
 
-            String[] parts = line.split(",");
+        // TODO:
 
-            if (parts.length == 4)
+        /*
-            {
+        Example line:
-                try
-                {
-                    int id = Integer.parseInt(parts[0].trim());
-                    String name = parts[1].trim();
-                    String major = parts[2].trim();
-                    double gpa = Double.parseDouble(parts[3].trim());
 
-                    Student student = new Student(id, name, major, gpa);
+        1001,Aryan,Computer Science,3.7
+         */
 
-                    students.add(student);
+        for (String line : lines) {
+
+            // TODO:
+            // split line
+
+            // TODO:
+            // read values
+
+            // TODO:
+            // create Student
+
+            // TODO:
+            // add to students list
 
         }
-                catch (NumberFormatException e)
+
-                {
-                    System.err.println("Skipping invalid line (format error): " + line);
-                }
-            }
-        }
     }
 
     public ArrayList<Student> getStudents() {
+
         return students;
     }
+
 }

src/main/java/dev/utils/FileManager.java

@@ -2,26 +2,31 @@ package dev.utils;
 
 import java.io.BufferedReader;
 import java.io.FileReader;
+
 import java.util.ArrayList;
 import java.util.List;
 
 public class FileManager {
 
-    public static List<String> loadStudents(String path) throws Exception
+    public static List<String> loadStudents(String path) throws Exception {
-    {
+
         List<String> lines = new ArrayList<>();
 
         BufferedReader reader = new BufferedReader(new FileReader(path));
 
         String line;
 
-        while ((line = reader.readLine()) != null)
+        while ((line = reader.readLine()) != null) {
-        {
+
-            if (!line.trim().isEmpty()) {lines.add(line);}
+            // TODO:
+
+            // Add line to list
+
         }
 
         reader.close();
 
         return lines;
     }
+
 }

src/main/java/lecture/multithreading/timeout/Main.java

@@ -1,10 +1,25 @@
 package lecture.multithreading.timeout;
 
 
+import java.util.Scanner;
 
 public class Main {
     public static void main(String[] args) {
-        // TODO
+
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.println("you have 10 seconds: ");
+        System.out.print("enter your name: ");
+
+        MyRunnable myRunnable = new MyRunnable();
+        Thread thread = new Thread(myRunnable);
+        thread.setDaemon(true);
+        thread.start();
+
+        String name = scanner.nextLine();
+        System.out.println("hello " + name);
+
+        scanner.close();
     }
 }
 

src/main/java/lecture/multithreading/timeout/MyRunnable.java

@@ -0,0 +1,22 @@
+package lecture.multithreading.timeout;
+
+public class MyRunnable implements Runnable{
+
+    @Override
+    public void run(){
+
+        for (int i = 1; i <= 10 ; i++){
+            try {
+                Thread.sleep(1000);
+            } catch (InterruptedException e) {
+                System.out.println("thread was interrupted");
+            }
+
+            if(i == 10){
+                System.out.println("time is up");
+                System.exit(0);
+            }
+
+        }
+    }
+}