From c70ff2b07a6d8d5d9439a1098dbad747ed8e6ffd Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Sun, 22 Sep 2024 22:58:00 +0800
Subject: [PATCH 01/11] Created class Machine

---
 src/main/java/core/basesyntax/Bulldozer.java | 12 ++++++++++++
 src/main/java/core/basesyntax/Excavator.java | 12 ++++++++++++
 src/main/java/core/basesyntax/Machine.java   |  8 ++++++++
 src/main/java/core/basesyntax/MainApp.java   | 11 +++++++++++
 src/main/java/core/basesyntax/Truck.java     | 13 +++++++++++++
 5 files changed, 56 insertions(+)
 create mode 100644 src/main/java/core/basesyntax/Bulldozer.java
 create mode 100644 src/main/java/core/basesyntax/Excavator.java
 create mode 100644 src/main/java/core/basesyntax/Machine.java
 create mode 100644 src/main/java/core/basesyntax/Truck.java

diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
new file mode 100644
index 000000000..8e76ce14f
--- /dev/null
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -0,0 +1,12 @@
+package core.basesyntax;
+
+public class Bulldozer extends Machine {
+
+    public void doWork() {
+        System.out.println("Bulldozer started its work.");
+    }
+
+    public void stopWork() {
+        System.out.println("Bulldozer stopped working.");
+    }
+}
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
new file mode 100644
index 000000000..ec3db7acd
--- /dev/null
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -0,0 +1,12 @@
+package core.basesyntax;
+
+public class Excavator extends Machine {
+
+    public void doWork() {
+        System.out.println("Excavator started its work.");
+    }
+
+    public void stopWork() {
+        System.out.println("Excavator stopped working.");
+    }
+}
diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
new file mode 100644
index 000000000..926941370
--- /dev/null
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -0,0 +1,8 @@
+package core.basesyntax;
+
+abstract class Machine {
+
+    public abstract void doWork();
+
+    public abstract void stopWork();
+}
diff --git a/src/main/java/core/basesyntax/MainApp.java b/src/main/java/core/basesyntax/MainApp.java
index f99e9a019..f0e820945 100644
--- a/src/main/java/core/basesyntax/MainApp.java
+++ b/src/main/java/core/basesyntax/MainApp.java
@@ -1,5 +1,16 @@
 package core.basesyntax;
 
 public class MainApp {
+    public static void main(String[] args) {
+        Machine[] machines = {
+                new Truck(),
+                new Bulldozer(),
+                new Excavator(),
+        };
 
+        for (Machine machine: machines) {
+            machine.doWork();
+            machine.stopWork();
+        }
+    }
 }
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
new file mode 100644
index 000000000..b3a64eeb8
--- /dev/null
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+class Truck extends Machine {
+    @Override
+    public void doWork() {
+        System.out.println("Truck started its work.");
+    }
+
+    public void stopWork() {
+        System.out.println("Truck stopped working.");
+    }
+}
+

From 5d7ff28151cc0ad786f99affbee0c5d2aab07683 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Sun, 22 Sep 2024 23:07:48 +0800
Subject: [PATCH 02/11] Implement changes

---
 src/main/java/core/basesyntax/Bulldozer.java | 2 +-
 src/main/java/core/basesyntax/Excavator.java | 2 +-
 src/main/java/core/basesyntax/Truck.java     | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
index 8e76ce14f..7fd8697a2 100644
--- a/src/main/java/core/basesyntax/Bulldozer.java
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -7,6 +7,6 @@ public void doWork() {
     }
 
     public void stopWork() {
-        System.out.println("Bulldozer stopped working.");
+        System.out.println("Bulldozer has stopped working.");
     }
 }
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
index ec3db7acd..e1aff2b15 100644
--- a/src/main/java/core/basesyntax/Excavator.java
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -7,6 +7,6 @@ public void doWork() {
     }
 
     public void stopWork() {
-        System.out.println("Excavator stopped working.");
+        System.out.println("Excavator has stopped working.");
     }
 }
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
index b3a64eeb8..63f6fd24b 100644
--- a/src/main/java/core/basesyntax/Truck.java
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -7,7 +7,7 @@ public void doWork() {
     }
 
     public void stopWork() {
-        System.out.println("Truck stopped working.");
+        System.out.println("Truck has stopped working.");
     }
 }
 

From 28393ccdb8d02fcca11346e7594382e6f54215c9 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Tue, 24 Sep 2024 21:13:58 +0800
Subject: [PATCH 03/11] Implement changes

---
 src/main/java/core/basesyntax/Bulldozer.java | 1 -
 src/main/java/core/basesyntax/Excavator.java | 1 -
 src/main/java/core/basesyntax/Machine.java   | 2 --
 3 files changed, 4 deletions(-)

diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
index 7fd8697a2..24fdcad2d 100644
--- a/src/main/java/core/basesyntax/Bulldozer.java
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -1,7 +1,6 @@
 package core.basesyntax;
 
 public class Bulldozer extends Machine {
-
     public void doWork() {
         System.out.println("Bulldozer started its work.");
     }
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
index e1aff2b15..6a50a102f 100644
--- a/src/main/java/core/basesyntax/Excavator.java
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -1,7 +1,6 @@
 package core.basesyntax;
 
 public class Excavator extends Machine {
-
     public void doWork() {
         System.out.println("Excavator started its work.");
     }
diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
index 926941370..50b184861 100644
--- a/src/main/java/core/basesyntax/Machine.java
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -1,8 +1,6 @@
 package core.basesyntax;
 
 abstract class Machine {
-
     public abstract void doWork();
-
     public abstract void stopWork();
 }

From 0015a74ea44dedb4706ee93a5043916bdad369b3 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Tue, 24 Sep 2024 21:56:13 +0800
Subject: [PATCH 04/11] Implement changes

---
 src/main/java/core/basesyntax/Machine.java | 2 +-
 src/main/java/core/basesyntax/Truck.java   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
index 50b184861..5a62715c2 100644
--- a/src/main/java/core/basesyntax/Machine.java
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -1,6 +1,6 @@
 package core.basesyntax;
 
-abstract class Machine {
+public abstract class Machine {
     public abstract void doWork();
     public abstract void stopWork();
 }
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
index 63f6fd24b..0b2f71d7c 100644
--- a/src/main/java/core/basesyntax/Truck.java
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -1,6 +1,6 @@
 package core.basesyntax;
 
-class Truck extends Machine {
+public class Truck extends Machine {
     @Override
     public void doWork() {
         System.out.println("Truck started its work.");

From bff30d983a664847d5a90546870ff0a9399d2d14 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Tue, 24 Sep 2024 22:00:34 +0800
Subject: [PATCH 05/11] Implement changes

---
 src/main/java/core/basesyntax/Bulldozer.java | 1 +
 src/main/java/core/basesyntax/Excavator.java | 1 +
 src/main/java/core/basesyntax/Machine.java   | 1 +
 src/main/java/core/basesyntax/MainApp.java   | 2 ++
 src/main/java/core/basesyntax/Truck.java     | 1 +
 5 files changed, 6 insertions(+)

diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
index 24fdcad2d..7fd8697a2 100644
--- a/src/main/java/core/basesyntax/Bulldozer.java
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -1,6 +1,7 @@
 package core.basesyntax;
 
 public class Bulldozer extends Machine {
+
     public void doWork() {
         System.out.println("Bulldozer started its work.");
     }
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
index 6a50a102f..e1aff2b15 100644
--- a/src/main/java/core/basesyntax/Excavator.java
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -1,6 +1,7 @@
 package core.basesyntax;
 
 public class Excavator extends Machine {
+
     public void doWork() {
         System.out.println("Excavator started its work.");
     }
diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
index 5a62715c2..9116677a1 100644
--- a/src/main/java/core/basesyntax/Machine.java
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -1,6 +1,7 @@
 package core.basesyntax;
 
 public abstract class Machine {
+
     public abstract void doWork();
     public abstract void stopWork();
 }
diff --git a/src/main/java/core/basesyntax/MainApp.java b/src/main/java/core/basesyntax/MainApp.java
index f0e820945..691213948 100644
--- a/src/main/java/core/basesyntax/MainApp.java
+++ b/src/main/java/core/basesyntax/MainApp.java
@@ -1,6 +1,7 @@
 package core.basesyntax;
 
 public class MainApp {
+
     public static void main(String[] args) {
         Machine[] machines = {
                 new Truck(),
@@ -14,3 +15,4 @@ public static void main(String[] args) {
         }
     }
 }
+
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
index 0b2f71d7c..5f24ab0f7 100644
--- a/src/main/java/core/basesyntax/Truck.java
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -1,6 +1,7 @@
 package core.basesyntax;
 
 public class Truck extends Machine {
+
     @Override
     public void doWork() {
         System.out.println("Truck started its work.");

From a205c811aa1eb3ede2dab33f389aabfcfb1ea907 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Wed, 25 Sep 2024 16:48:57 +0800
Subject: [PATCH 06/11] Implement changes

---
 src/main/java/core/basesyntax/Machine.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
index 9116677a1..4aea2f871 100644
--- a/src/main/java/core/basesyntax/Machine.java
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -3,5 +3,6 @@
 public abstract class Machine {
 
     public abstract void doWork();
+
     public abstract void stopWork();
 }

From 657f3fc15781c4b0b06cbbf13e7eb2952715dca6 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Mon, 30 Sep 2024 16:16:23 +0800
Subject: [PATCH 07/11] Implement changes

---
 src/main/java/core/basesyntax/Bulldozer.java | 1 -
 src/main/java/core/basesyntax/Excavator.java | 1 -
 src/main/java/core/basesyntax/Machine.java   | 2 --
 src/main/java/core/basesyntax/Truck.java     | 1 -
 4 files changed, 5 deletions(-)

diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
index 7fd8697a2..861882c45 100644
--- a/src/main/java/core/basesyntax/Bulldozer.java
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -5,7 +5,6 @@ public class Bulldozer extends Machine {
     public void doWork() {
         System.out.println("Bulldozer started its work.");
     }
-
     public void stopWork() {
         System.out.println("Bulldozer has stopped working.");
     }
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
index e1aff2b15..f973cf5d3 100644
--- a/src/main/java/core/basesyntax/Excavator.java
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -5,7 +5,6 @@ public class Excavator extends Machine {
     public void doWork() {
         System.out.println("Excavator started its work.");
     }
-
     public void stopWork() {
         System.out.println("Excavator has stopped working.");
     }
diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
index 4aea2f871..5a62715c2 100644
--- a/src/main/java/core/basesyntax/Machine.java
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -1,8 +1,6 @@
 package core.basesyntax;
 
 public abstract class Machine {
-
     public abstract void doWork();
-
     public abstract void stopWork();
 }
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
index 5f24ab0f7..defc4fce8 100644
--- a/src/main/java/core/basesyntax/Truck.java
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -6,7 +6,6 @@ public class Truck extends Machine {
     public void doWork() {
         System.out.println("Truck started its work.");
     }
-
     public void stopWork() {
         System.out.println("Truck has stopped working.");
     }

From 55822b736841600d944c3b67c7eef5dfcbf8a903 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Mon, 30 Sep 2024 16:18:05 +0800
Subject: [PATCH 08/11] Implement changes

---
 src/main/java/core/basesyntax/Bulldozer.java | 1 +
 src/main/java/core/basesyntax/Excavator.java | 1 +
 src/main/java/core/basesyntax/Machine.java   | 1 +
 src/main/java/core/basesyntax/Truck.java     | 1 +
 4 files changed, 4 insertions(+)

diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
index 861882c45..7fd8697a2 100644
--- a/src/main/java/core/basesyntax/Bulldozer.java
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -5,6 +5,7 @@ public class Bulldozer extends Machine {
     public void doWork() {
         System.out.println("Bulldozer started its work.");
     }
+
     public void stopWork() {
         System.out.println("Bulldozer has stopped working.");
     }
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
index f973cf5d3..e1aff2b15 100644
--- a/src/main/java/core/basesyntax/Excavator.java
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -5,6 +5,7 @@ public class Excavator extends Machine {
     public void doWork() {
         System.out.println("Excavator started its work.");
     }
+
     public void stopWork() {
         System.out.println("Excavator has stopped working.");
     }
diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
index 5a62715c2..cad5be453 100644
--- a/src/main/java/core/basesyntax/Machine.java
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -2,5 +2,6 @@
 
 public abstract class Machine {
     public abstract void doWork();
+
     public abstract void stopWork();
 }
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
index defc4fce8..5f24ab0f7 100644
--- a/src/main/java/core/basesyntax/Truck.java
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -6,6 +6,7 @@ public class Truck extends Machine {
     public void doWork() {
         System.out.println("Truck started its work.");
     }
+
     public void stopWork() {
         System.out.println("Truck has stopped working.");
     }

From 40a42b83f3480e5a45bd7a1d7164e0df2351dea3 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Mon, 30 Sep 2024 17:05:39 +0800
Subject: [PATCH 09/11] Implement changes

---
 src/main/java/core/basesyntax/Bulldozer.java | 1 -
 src/main/java/core/basesyntax/Excavator.java | 1 -
 src/main/java/core/basesyntax/Machine.java   | 1 -
 src/main/java/core/basesyntax/MainApp.java   | 2 --
 src/main/java/core/basesyntax/Truck.java     | 2 --
 5 files changed, 7 deletions(-)

diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
index 7fd8697a2..861882c45 100644
--- a/src/main/java/core/basesyntax/Bulldozer.java
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -5,7 +5,6 @@ public class Bulldozer extends Machine {
     public void doWork() {
         System.out.println("Bulldozer started its work.");
     }
-
     public void stopWork() {
         System.out.println("Bulldozer has stopped working.");
     }
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
index e1aff2b15..f973cf5d3 100644
--- a/src/main/java/core/basesyntax/Excavator.java
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -5,7 +5,6 @@ public class Excavator extends Machine {
     public void doWork() {
         System.out.println("Excavator started its work.");
     }
-
     public void stopWork() {
         System.out.println("Excavator has stopped working.");
     }
diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
index cad5be453..5a62715c2 100644
--- a/src/main/java/core/basesyntax/Machine.java
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -2,6 +2,5 @@
 
 public abstract class Machine {
     public abstract void doWork();
-
     public abstract void stopWork();
 }
diff --git a/src/main/java/core/basesyntax/MainApp.java b/src/main/java/core/basesyntax/MainApp.java
index 691213948..603d0b97a 100644
--- a/src/main/java/core/basesyntax/MainApp.java
+++ b/src/main/java/core/basesyntax/MainApp.java
@@ -1,14 +1,12 @@
 package core.basesyntax;
 
 public class MainApp {
-
     public static void main(String[] args) {
         Machine[] machines = {
                 new Truck(),
                 new Bulldozer(),
                 new Excavator(),
         };
-
         for (Machine machine: machines) {
             machine.doWork();
             machine.stopWork();
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
index 5f24ab0f7..a2de4b9a3 100644
--- a/src/main/java/core/basesyntax/Truck.java
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -1,12 +1,10 @@
 package core.basesyntax;
 
 public class Truck extends Machine {
-
     @Override
     public void doWork() {
         System.out.println("Truck started its work.");
     }
-
     public void stopWork() {
         System.out.println("Truck has stopped working.");
     }

From 2260b17457bdfaeee8ee1cb329a7dfe4aa88f024 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Mon, 30 Sep 2024 22:34:28 +0800
Subject: [PATCH 10/11] Fixed issues

---
 src/main/java/core/basesyntax/Bulldozer.java | 3 ++-
 src/main/java/core/basesyntax/Excavator.java | 3 ++-
 src/main/java/core/basesyntax/MainApp.java   | 1 +
 src/main/java/core/basesyntax/Truck.java     | 1 +
 4 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/main/java/core/basesyntax/Bulldozer.java b/src/main/java/core/basesyntax/Bulldozer.java
index 861882c45..3039f6acb 100644
--- a/src/main/java/core/basesyntax/Bulldozer.java
+++ b/src/main/java/core/basesyntax/Bulldozer.java
@@ -1,10 +1,11 @@
 package core.basesyntax;
 
 public class Bulldozer extends Machine {
-
+    @Override
     public void doWork() {
         System.out.println("Bulldozer started its work.");
     }
+
     public void stopWork() {
         System.out.println("Bulldozer has stopped working.");
     }
diff --git a/src/main/java/core/basesyntax/Excavator.java b/src/main/java/core/basesyntax/Excavator.java
index f973cf5d3..af010b19d 100644
--- a/src/main/java/core/basesyntax/Excavator.java
+++ b/src/main/java/core/basesyntax/Excavator.java
@@ -1,10 +1,11 @@
 package core.basesyntax;
 
 public class Excavator extends Machine {
-
+    @Override
     public void doWork() {
         System.out.println("Excavator started its work.");
     }
+
     public void stopWork() {
         System.out.println("Excavator has stopped working.");
     }
diff --git a/src/main/java/core/basesyntax/MainApp.java b/src/main/java/core/basesyntax/MainApp.java
index 603d0b97a..a755fa9b2 100644
--- a/src/main/java/core/basesyntax/MainApp.java
+++ b/src/main/java/core/basesyntax/MainApp.java
@@ -7,6 +7,7 @@ public static void main(String[] args) {
                 new Bulldozer(),
                 new Excavator(),
         };
+
         for (Machine machine: machines) {
             machine.doWork();
             machine.stopWork();
diff --git a/src/main/java/core/basesyntax/Truck.java b/src/main/java/core/basesyntax/Truck.java
index a2de4b9a3..0b2f71d7c 100644
--- a/src/main/java/core/basesyntax/Truck.java
+++ b/src/main/java/core/basesyntax/Truck.java
@@ -5,6 +5,7 @@ public class Truck extends Machine {
     public void doWork() {
         System.out.println("Truck started its work.");
     }
+
     public void stopWork() {
         System.out.println("Truck has stopped working.");
     }

From f074813cbd998e8432616efa6ca837e2fc3e1d30 Mon Sep 17 00:00:00 2001
From: Dima <nds081989@hmail.com>
Date: Mon, 30 Sep 2024 22:37:07 +0800
Subject: [PATCH 11/11] Fixed issues

---
 src/main/java/core/basesyntax/Machine.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/core/basesyntax/Machine.java b/src/main/java/core/basesyntax/Machine.java
index 5a62715c2..cad5be453 100644
--- a/src/main/java/core/basesyntax/Machine.java
+++ b/src/main/java/core/basesyntax/Machine.java
@@ -2,5 +2,6 @@
 
 public abstract class Machine {
     public abstract void doWork();
+
     public abstract void stopWork();
 }