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Machine classes #2457

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1eb3b8e
Create abstract Machine class with doWork() and stopWork() methods
WOLFnik5 Oct 2, 2025
89af860
Create abstract Machine class with doWork() and stopWork() methods
WOLFnik5 Oct 2, 2025
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13 changes: 13 additions & 0 deletions src/main/java/core/basesyntax/Bulldozer.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
package core.basesyntax;

public class Bulldozer extends Machine {
@Override
public void doWork() {
System.out.println("Bulldozer started");
}

@Override
public void stopWork() {
System.out.println("Bulldozer stopped");
}
}
13 changes: 13 additions & 0 deletions src/main/java/core/basesyntax/Excavator.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
package core.basesyntax;

public class Excavator extends Machine {
@Override
public void doWork() {
System.out.println("Excavator started");
}

@Override
public void stopWork() {
System.out.println("Excavator stopped");
}
}
7 changes: 7 additions & 0 deletions src/main/java/core/basesyntax/Machine.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
package core.basesyntax;

public abstract class Machine {
public abstract void doWork();

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@mateacademy-ai-mentor mateacademy-ai-mentor Oct 2, 2025

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This violates checklist item: "Please don't add redundant empty lines to your code. We don't need them after class declaration or method signature." Remove the blank line between the two abstract method declarations so there is no empty line after the doWork() signature. See the checklist guidance for this rule.

public abstract void stopWork();
}
8 changes: 8 additions & 0 deletions src/main/java/core/basesyntax/MainApp.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,13 @@
package core.basesyntax;

public class MainApp {
public static void main(String[] args) {
Machine[] machines = {new Truck(),new Bulldozer(), new Excavator()};

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@mateacademy-ai-mentor mateacademy-ai-mentor Oct 2, 2025

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This violates checklist item: "Please don't add redundant empty lines to your code. We don't need them after class declaration or method signature." Remove the blank line at line 6 to avoid redundant empty lines and match the style guidance.

for (Machine machine : machines) {
machine.doWork();
machine.stopWork();
}
}

}
13 changes: 13 additions & 0 deletions src/main/java/core/basesyntax/Truck.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
package core.basesyntax;

public class Truck extends Machine {
@Override
public void doWork() {
System.out.println("Truck started");
}

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@mateacademy-ai-mentor mateacademy-ai-mentor Oct 2, 2025

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This violates checklist item: "Please don't add redundant empty lines to your code. We don't need them after class declaration or method signature." Remove the blank line between the doWork() method and the @Override for stopWork() so there are no redundant empty lines in the class.

@Override
public void stopWork() {
System.out.println("Truck stopped");
}
}