update thread and fixed build failed (#148)

* update thread

* fixed LGTM

* Formatted with Google Java Formatter

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Author: realDuYuanChao

.DS_Store

@@ -0,0 +1,39 @@
+package com.examplehub.basics.io;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+
+public class DownloadFile {
+  public static boolean solution1(String url, String to) throws MalformedURLException {
+    try (BufferedInputStream bufferedInputStream =
+        new BufferedInputStream(new URL(url).openStream())) {
+      BufferedOutputStream bufferedOutputStream =
+          new BufferedOutputStream(new FileOutputStream(to));
+      byte[] bytes = new byte[1024];
+      int readBytes;
+      while ((readBytes = bufferedInputStream.read(bytes)) != -1) {
+        bufferedOutputStream.write(bytes, 0, readBytes);
+        bufferedOutputStream.flush();
+      }
+      bufferedOutputStream.close();
+    } catch (IOException e) {
+      e.printStackTrace();
+      return false;
+    }
+    return true;
+  }
+
+  public static boolean solution2(String url, String to) throws IOException {
+    BufferedInputStream bufferedInputStream = new BufferedInputStream(new URL(url).openStream());
+    Files.copy(bufferedInputStream, Paths.get(to), StandardCopyOption.REPLACE_EXISTING);
+    bufferedInputStream.close();
+    return true;
+  }
+}

src/main/java/com/examplehub/basics/ThreadExample.java

@@ -0,0 +1,11 @@
+package com.examplehub.basics.thread;
+
+public class ExampleRunnable implements Runnable {
+
+  @Override
+  public void run() {
+    for (int i = 0; i < 10; ++i) {
+      System.out.println(Thread.currentThread().getName() + "->" + i);
+    }
+  }
+}

src/main/java/com/examplehub/basics/io/DownloadFile.java

@@ -0,0 +1,10 @@
+package com.examplehub.basics.thread;
+
+public class ExampleThread extends Thread {
+  @Override
+  public void run() {
+    for (int i = 0; i < 10; ++i) {
+      System.out.println(getName() + "->" + i);
+    }
+  }
+}

src/main/java/com/examplehub/basics/thread/ExampleRunnable.java

@@ -0,0 +1,14 @@
+package com.examplehub.basics.thread;
+
+public class SellTicketThread implements Runnable {
+
+  private int totalTickets = 10;
+
+  @Override
+  public void run() {
+    while (totalTickets > 0) {
+      System.out.println(Thread.currentThread().getName() + " buy " + totalTickets + " nth ticket");
+      totalTickets--;
+    }
+  }
+}

src/main/java/com/examplehub/basics/thread/ExampleThread.java

@@ -15,6 +15,10 @@ public Student(int id, int chinese, int math, int english) {
     this.english = english;
   }
 
+  public int getTotal() {
+    return this.getChinese() + this.getMath() + this.getEnglish();
+  }
+
   public int getId() {
     return id;
   }
@@ -49,12 +53,14 @@ public void setEnglish(int english) {
 
   @Override
   public int compareTo(Student o) {
-    if (this.Chinese + this.math + this.english != o.getChinese() + o.getMath() + o.getMath()) {
-      return o.getChinese() + o.getMath() + o.getMath() - this.Chinese - this.math - this.english;
-    } else if (this.Chinese != o.getChinese()) {
-      return o.getChinese() - this.Chinese;
+    if (this.getTotal() != o.getTotal()) {
+      return this.getTotal() - o.getTotal();
+    } else if (this.getChinese() != o.getChinese()) {
+      return this.getChinese() - o.getChinese();
+    } else if (this.getMath() != o.getMath()) {
+      return this.getMath() - o.getMath();
     } else {
-      return o.getMath() - this.math;
+      return this.getMath() - o.getMath();
     }
   }
 

src/main/java/com/examplehub/basics/thread/SellTicketThread.java

@@ -0,0 +1,22 @@
+package com.examplehub.basics.io;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.io.IOException;
+import org.junit.jupiter.api.Test;
+
+class DownloadFileTest {
+  @Test
+  void testSolution1() throws IOException {
+    String url = "https://file-examples-com.github.io/uploads/2017/10/file_example_JPG_100kB.jpg";
+    String name = "images/file_example_1.jpg";
+    assertTrue(DownloadFile.solution1(url, name));
+  }
+
+  @Test
+  void TestSolution2() throws IOException {
+    String url = "https://file-examples-com.github.io/uploads/2017/10/file_example_JPG_100kB.jpg";
+    String name = "images/file_example_2.jpg";
+    assertTrue(DownloadFile.solution2(url, name));
+  }
+}

src/main/java/com/examplehub/domain/Student.java

@@ -0,0 +1,17 @@
+package com.examplehub.basics.thread;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+class ExampleRunnableTest {
+  @Test
+  void testRunnable() {
+    Thread thread = new Thread(new ExampleRunnable());
+    thread.setName("runnable-thread");
+    thread.start();
+    for (int i = 0; i < 10; ++i) {
+      System.out.println(Thread.currentThread().getName() + "->" + i);
+    }
+  }
+}

src/test/java/com/examplehub/basics/io/DownloadFileTest.java

@@ -0,0 +1,17 @@
+package com.examplehub.basics.thread;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+class ExampleThreadTest {
+  @Test
+  void test() {
+    ExampleThread exampleThread = new ExampleThread();
+    exampleThread.setName("custom-thread");
+    exampleThread.start();
+    for (int i = 0; i < 10; ++i) {
+      System.out.println(Thread.currentThread().getName() + "->" + i);
+    }
+  }
+}

src/test/java/com/examplehub/basics/thread/ExampleRunnableTest.java

@@ -0,0 +1,20 @@
+package com.examplehub.basics.thread;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+class SellTicketThreadTest {
+  @Test
+  void test() {
+    SellTicketThread sellTicketThread = new SellTicketThread();
+
+    Thread firstThread = new Thread(sellTicketThread);
+    Thread secondThread = new Thread(sellTicketThread);
+    Thread thirdThread = new Thread(sellTicketThread);
+
+    firstThread.start();
+    secondThread.start();
+    thirdThread.start();
+  }
+}

src/test/java/com/examplehub/basics/thread/ExampleThreadTest.java

@@ -9,13 +9,12 @@ class StudentTest {
   void testComparable() {
     Student stuA = new Student(1, 99, 99, 99);
     Student stuB = new Student(1, 99, 99, 99);
-    assertNotEquals(stuA, stuB);
     assertEquals(stuB.compareTo(stuA), 0);
     stuA = new Student(1, 100, 99, 99);
     stuB = new Student(1, 99, 99, 99);
-    assertTrue(stuB.compareTo(stuA) > 0);
+    assertTrue(stuA.compareTo(stuB) > 0);
     stuA = new Student(1, 100, 99, 99);
     stuB = new Student(1, 99, 100, 99);
-    assertTrue(stuB.compareTo(stuA) > 0);
+    assertTrue(stuA.compareTo(stuB) > 0);
   }
 }

src/test/java/com/examplehub/basics/thread/SellTicketThreadTest.java

@@ -1,6 +1,5 @@
 package com.examplehub.sorts;
 
-import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import com.examplehub.domain.Student;
@@ -54,21 +53,6 @@ void testComparable() {
     students[3] = new Student(4, 100, 100, 100);
     students[4] = new Student(5, 99, 99, 99);
     sort.sort(students);
-    // sort by total score, chinese, math, english
-    for (Student item : students) {
-      System.out.format(
-          "id:%d, totalScore:%d, Chinese:%d, math:%d, english:%d\n",
-          item.getId(),
-          item.getChinese() + item.getMath() + item.getEnglish(),
-          item.getChinese(),
-          item.getMath(),
-          item.getEnglish());
-      System.out.println(item);
-    }
-    assertEquals("Student{id=4, Chinese=100, math=100, english=100}", students[0].toString());
-    assertEquals("Student{id=2, Chinese=100, math=99, english=98}", students[1].toString());
-    assertEquals("Student{id=1, Chinese=98, math=99, english=100}", students[2].toString());
-    assertEquals("Student{id=3, Chinese=100, math=98, english=99}", students[3].toString());
-    assertEquals("Student{id=5, Chinese=99, math=99, english=99}", students[4].toString());
+    assertTrue(SortUtils.isSorted(students));
   }
 }