created abstract class Machine with 2 abstract methods. Abstract meth…

.github/workflows/ci.yml

@@ -1,18 +1,18 @@
-name: Java CI
-
-on: [push, pull_request]
-
-jobs:
- build:
- runs-on: ubuntu-latest
-
- steps:
- - uses: actions/checkout@v2
- - name: Set up JDK 17
- uses: actions/setup-java@v2
- with:
- java-version: '17'
- distribution: 'adopt'
- cache: maven
- - name: Build with Maven
- run: mvn --batch-mode --update-snapshots verify
+name: Java CI
+
+on: [push, pull_request]
+
+jobs:
+ build:
+ runs-on: ubuntu-latest
+
+ steps:
+ - uses: actions/checkout@v2
+ - name: Set up JDK 17
+ uses: actions/setup-java@v2
+ with:
+ java-version: '17'
+ distribution: 'adopt'
+ cache: maven
+ - name: Build with Maven
+ run: mvn --batch-mode --update-snapshots verify

.gitignore

@@ -1,3 +1,3 @@
-.idea/*
-*.iml
-target/*
+.idea/*
+*.iml
+target/*

README.md

@@ -1,9 +1,9 @@
-# jv-oop
-
-- Create class Machine containing methods `public abstract void doWork()` and `public abstract void stopWork()`. 
-- Create classes `Truck`, `Bulldozer`, `Excavator` that will inherit from `Machine`.
-- In those classes override `doWork()`, so it will print message that certain machine started its work.
-- Override `stopWork()` as well. It should print messages that certain machine stopped its work.
-- In `MainApp` class create `Machine` array with `Truck`, `Bulldozer` and `Excavator` and call methods `doWork()` and `stopWork()` in a loop.
-
-#### [Try to avoid these common mistakes, while solving task](https://mate-academy.github.io/jv-program-common-mistakes/java-core/oop/oop)
+# jv-oop
+
+- Create class Machine containing methods `public abstract void doWork()` and `public abstract void stopWork()`. 
+- Create classes `Truck`, `Bulldozer`, `Excavator` that will inherit from `Machine`.
+- In those classes override `doWork()`, so it will print message that certain machine started its work.
+- Override `stopWork()` as well. It should print messages that certain machine stopped its work.
+- In `MainApp` class create `Machine` array with `Truck`, `Bulldozer` and `Excavator` and call methods `doWork()` and `stopWork()` in a loop.
+
+#### [Try to avoid these common mistakes, while solving task](https://mate-academy.github.io/jv-program-common-mistakes/java-core/oop/oop)

checklist.md

@@ -1,49 +1,49 @@
-## Common mistakes (jv-oop)
-
-#### Please don't add redundant empty lines to your code.
-We don't need them after class declaration or method signature.
-* Bad example:
-```
-public class Main {
-
- public static void main(String[] args) {
-
- System.out.println("Hello world!");
- }
-}
-```
-* Improved example:
-```
-public class Main {
- public static void main(String[] args) {
- System.out.println("Hello world!");
- }
-}
-```
-
-#### Write informative messages in methods.
-Use english only and make them informative:
-message should indicate what type of `Machine` is working right now `Truck`, `Bulldozer` or `Excavator`.
-
-#### Use abstract reference instead of specific one where possible: 
-* Bad example:
-```
-Cat fluffy = new Cat();
-Dog oscar = new Dog();
-```
-This example is bad cause it won't allow us to use polymorphism in our code.
-Our reference is now bonded to specific implementation, but it is always better to depend on the abstraction.
-Let's see how we can improve it:
-* Improved example:
-```
-Animal fluffy = new Cat();
-Animal oscar = new Dog();
-``` 
-
-#### Depending on the case, class elements should have different access modifiers
-Remember that if you don't use any access modifiers that will apply the default one. Do we always want
-to have all elements with default access modifiers? Remind yourself about encapsulation principle and 
-when private or public should be used.
-
-#### Write informative messages when you commit code or open a PR. 
-Bad example of commit/PR message: `done`/`fixed`/`commit`/`solution`/`added homework`/`my solution` and other one-word, abstract or random messages. 
+## Common mistakes (jv-oop)
+
+#### Please don't add redundant empty lines to your code.
+We don't need them after class declaration or method signature.
+* Bad example:
+```
+public class Main {
+
+ public static void main(String[] args) {
+ 
+ System.out.println("Hello world!");
+ }
+}
+```
+* Improved example:
+```
+public class Main {
+ public static void main(String[] args) {
+ System.out.println("Hello world!");
+ }
+}
+```
+
+#### Write informative messages in methods.
+Use english only and make them informative:
+message should indicate what type of `Machine` is working right now `Truck`, `Bulldozer` or `Excavator`.
+
+#### Use abstract reference instead of specific one where possible: 
+* Bad example:
+```
+Cat fluffy = new Cat();
+Dog oscar = new Dog();
+```
+This example is bad cause it won't allow us to use polymorphism in our code.
+Our reference is now bonded to specific implementation, but it is always better to depend on the abstraction.
+Let's see how we can improve it:
+* Improved example:
+```
+Animal fluffy = new Cat();
+Animal oscar = new Dog();
+``` 
+
+#### Depending on the case, class elements should have different access modifiers
+Remember that if you don't use any access modifiers that will apply the default one. Do we always want
+to have all elements with default access modifiers? Remind yourself about encapsulation principle and 
+when private or public should be used.
+
+#### Write informative messages when you commit code or open a PR. 
+Bad example of commit/PR message: `done`/`fixed`/`commit`/`solution`/`added homework`/`my solution` and other one-word, abstract or random messages. 

pom.xml

@@ -1,68 +1,68 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
- <modelVersion>4.0.0</modelVersion>
-
- <groupId>mate-academy</groupId>
- <artifactId>oop-example</artifactId>
- <version>1.0-SNAPSHOT</version>
-
- <properties>
- <jdk.version>11</jdk.version>
- <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
- <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
- <maven.checkstyle.plugin.version>3.1.1</maven.checkstyle.plugin.version>
- <maven.checkstyle.plugin.configLocation>
- https://raw.githubusercontent.com/mate-academy/style-guides/master/java/checkstyle.xml
- </maven.checkstyle.plugin.configLocation>
- </properties>
-
- <dependencies>
- <dependency>
- <groupId>junit</groupId>
- <artifactId>junit</artifactId>
- <version>4.12</version>
- <scope>test</scope>
- </dependency>
- </dependencies>
- <build>
- <plugins>
- <plugin>
- <groupId>org.apache.maven.plugins</groupId>
- <artifactId>maven-checkstyle-plugin</artifactId>
- <version>3.1.1</version>
- <executions>
- <execution>
- <phase>compile</phase>
- <goals>
- <goal>check</goal>
- </goals>
- </execution>
- </executions>
- <configuration>
- <configLocation>${maven.checkstyle.plugin.configLocation}</configLocation>
- <encoding>UTF-8</encoding>
- <consoleOutput>true</consoleOutput>
- <failsOnError>true</failsOnError>
- <linkXRef>false</linkXRef>
- </configuration>
- </plugin>
- </plugins>
- <pluginManagement>
- <plugins>
- <plugin>
- <groupId>org.apache.maven.plugins</groupId>
- <artifactId>maven-compiler-plugin</artifactId>
- <version>3.8.0</version>
- <configuration>
- <source>${jdk.version}</source>
- <target>${jdk.version}</target>
- <encoding>${project.build.sourceEncoding}</encoding>
- </configuration>
- </plugin>
- </plugins>
- </pluginManagement>
- </build>
-</project>
-
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+
+ <groupId>mate-academy</groupId>
+ <artifactId>oop-example</artifactId>
+ <version>1.0-SNAPSHOT</version>
+
+ <properties>
+ <jdk.version>11</jdk.version>
+ <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+ <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+ <maven.checkstyle.plugin.version>3.1.1</maven.checkstyle.plugin.version>
+ <maven.checkstyle.plugin.configLocation>
+ https://raw.githubusercontent.com/mate-academy/style-guides/master/java/checkstyle.xml
+ </maven.checkstyle.plugin.configLocation>
+ </properties>
+
+ <dependencies>
+ <dependency>
+ <groupId>junit</groupId>
+ <artifactId>junit</artifactId>
+ <version>4.12</version>
+ <scope>test</scope>
+ </dependency>
+ </dependencies>
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-checkstyle-plugin</artifactId>
+ <version>3.1.1</version>
+ <executions>
+ <execution>
+ <phase>compile</phase>
+ <goals>
+ <goal>check</goal>
+ </goals>
+ </execution>
+ </executions>
+ <configuration>
+ <configLocation>${maven.checkstyle.plugin.configLocation}</configLocation>
+ <encoding>UTF-8</encoding>
+ <consoleOutput>true</consoleOutput>
+ <failsOnError>true</failsOnError>
+ <linkXRef>false</linkXRef>
+ </configuration>
+ </plugin>
+ </plugins>
+ <pluginManagement>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>3.8.0</version>
+ <configuration>
+ <source>${jdk.version}</source>
+ <target>${jdk.version}</target>
+ <encoding>${project.build.sourceEncoding}</encoding>
+ </configuration>
+ </plugin>
+ </plugins>
+ </pluginManagement>
+ </build>
+</project>
+

src/main/java/core/basesyntax/Buldozzer.java

@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+public class Buldozzer extends Machine {
+ @Override
+ public void doWork() {
+ System.out.println("Buldozzer started working");
+ }
+
+ @Override
+ public void stopWork() {
+ System.out.println("Buldozzer stopped working");
+ }
+}

src/main/java/core/basesyntax/Excavator.java

@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+public class Excavator extends Machine {
+ @Override
+ public void doWork() {
+ System.out.println("Excavator started working");
+ }
+
+ @Override
+ public void stopWork() {
+ System.out.println("Excavator stopped working");
+ }
+}

src/main/java/core/basesyntax/Machine.java

@@ -0,0 +1,8 @@
+package core.basesyntax;
+
+public abstract class Machine {
+
+ public abstract void doWork();
+
+ public abstract void stopWork();
+}

src/main/java/core/basesyntax/MainApp.java

@@ -1,5 +1,12 @@
-package core.basesyntax;
-
-public class MainApp {
-
-}
+package core.basesyntax;
+
+public class MainApp {
+ public static void main(String[] args) {
+ Machine [] machineGroup = {new Truck(), new Buldozzer(), new Excavator()};
+
+ for (Machine machine : machineGroup) {
+ machine.doWork();
+ machine.stopWork();
+ }
+ }
+}

src/main/java/core/basesyntax/Truck.java

@@ -0,0 +1,13 @@
+package core.basesyntax;
+
+public class Truck extends Machine {
+ @Override
+ public void doWork() {
+ System.out.println("Truck started working");
+ }
+
+ @Override
+ public void stopWork() {
+ System.out.println("Truck stopped working");
+ }
+}

src/test/java/core/basesyntax/MainAppTest.java

@@ -1,5 +1,5 @@
-package core.basesyntax;
-
-public class MainAppTest {
-
+package core.basesyntax;
+
+public class MainAppTest {
+
 }