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[BAEL-15993] - Move articles out of core-java pt 3

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Sjmillington
2019-11-02 11:40:05 +00:00
parent 7940f0d912
commit 0fe123a691
21 changed files with 416 additions and 6 deletions
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1
core-java-modules/core-java-lang-oop-2/README.md
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@@ -15,4 +15,5 @@ This module contains articles about Object-oriented programming (OOP) in Java
- [Composition, Aggregation, and Association in Java](https://www.baeldung.com/java-composition-aggregation-association)
- [Static and Default Methods in Interfaces in Java](https://www.baeldung.com/java-static-default-methods)
- [Java Copy Constructor](https://www.baeldung.com/java-copy-constructor)
- [Abstract Classes in Java](https://www.baeldung.com/java-abstract-class)
- [[<-- Prev]](/core-java-modules/core-java-lang-oop)[[More -->]](/core-java-modules/core-java-lang-oop-3)

29
core-java-modules/core-java-lang-oop-2/src/main/java/com/baeldung/abstractclasses/application/Application.java Normal file
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@@ -0,0 +1,29 @@
package com.baeldung.abstractclasses.application;
import com.baeldung.abstractclasses.filereaders.BaseFileReader;
import com.baeldung.abstractclasses.filereaders.LowercaseFileReader;
import com.baeldung.abstractclasses.filereaders.UppercaseFileReader;
import java.io.IOException;
import java.net.URISyntaxException;
import java.nio.file.Path;
import java.nio.file.Paths;
public class Application {
public static void main(String[] args) throws IOException, URISyntaxException {
Application application = new Application();
Path path = application.getPathFromResourcesFile("files/test.txt");
BaseFileReader lowercaseFileReader = new LowercaseFileReader(path);
lowercaseFileReader.readFile().forEach(line -> System.out.println(line));
BaseFileReader uppercaseFileReader = new UppercaseFileReader(path);
uppercaseFileReader.readFile().forEach(line -> System.out.println(line));
}
private Path getPathFromResourcesFile(String filePath) throws URISyntaxException {
return Paths.get(getClass().getClassLoader().getResource(filePath).toURI());
}
}

27
core-java-modules/core-java-lang-oop-2/src/main/java/com/baeldung/abstractclasses/filereaders/BaseFileReader.java Normal file
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@@ -0,0 +1,27 @@
package com.baeldung.abstractclasses.filereaders;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import java.util.stream.Collectors;
public abstract class BaseFileReader {
protected Path filePath;
protected BaseFileReader(Path filePath) {
this.filePath = filePath;
}
public Path getFilePath() {
return filePath;
}
public List<String> readFile() throws IOException {
return Files.lines(filePath)
.map(this::mapFileLine).collect(Collectors.toList());
}
protected abstract String mapFileLine(String line);
}

15
core-java-modules/core-java-lang-oop-2/src/main/java/com/baeldung/abstractclasses/filereaders/LowercaseFileReader.java Normal file
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@@ -0,0 +1,15 @@
package com.baeldung.abstractclasses.filereaders;
import java.nio.file.Path;
public class LowercaseFileReader extends BaseFileReader {
public LowercaseFileReader(Path filePath) {
super(filePath);
}
@Override
public String mapFileLine(String line) {
return line.toLowerCase();
}
}

15
core-java-modules/core-java-lang-oop-2/src/main/java/com/baeldung/abstractclasses/filereaders/UppercaseFileReader.java Normal file
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@@ -0,0 +1,15 @@
package com.baeldung.abstractclasses.filereaders;
import java.nio.file.Path;
public class UppercaseFileReader extends BaseFileReader {
public UppercaseFileReader(Path filePath) {
super(filePath);
}
@Override
public String mapFileLine(String line) {
return line.toUpperCase();
}
}

10
core-java-modules/core-java-lang-oop-2/src/main/resources/files/test.txt Normal file
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@@ -0,0 +1,10 @@
This is line 1
This is line 2
This is line 3
This is line 4
This is line 5
This is line 6
This is line 7
This is line 8
This is line 9
This is line 10

20
core-java-modules/core-java-lang-oop-2/src/test/java/com/baeldung/abstractclasses/test/LowercaseFileReaderUnitTest.java Normal file
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@@ -0,0 +1,20 @@
package com.baeldung.abstractclasses.test;
import com.baeldung.abstractclasses.filereaders.BaseFileReader;
import com.baeldung.abstractclasses.filereaders.LowercaseFileReader;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Test;
public class LowercaseFileReaderUnitTest {
@Test
public void givenLowercaseFileReaderInstance_whenCalledreadFile_thenCorrect() throws Exception {
Path path = Paths.get(getClass().getClassLoader().getResource("files/test.txt").toURI());
BaseFileReader lowercaseFileReader = new LowercaseFileReader(path);
assertThat(lowercaseFileReader.readFile()).isInstanceOf(List.class);
}
}

20
core-java-modules/core-java-lang-oop-2/src/test/java/com/baeldung/abstractclasses/test/UppercaseFileReaderUnitTest.java Normal file
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@@ -0,0 +1,20 @@
package com.baeldung.abstractclasses.test;
import com.baeldung.abstractclasses.filereaders.BaseFileReader;
import com.baeldung.abstractclasses.filereaders.UppercaseFileReader;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Test;
public class UppercaseFileReaderUnitTest {
@Test
public void givenUppercaseFileReaderInstance_whenCalledreadFile_thenCorrect() throws Exception {
Path path = Paths.get(getClass().getClassLoader().getResource("files/test.txt").toURI());
BaseFileReader uppercaseFileReader = new UppercaseFileReader(path);
assertThat(uppercaseFileReader.readFile()).isInstanceOf(List.class);
}
}