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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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29
core-java-modules/core-java/src/main/java/com/baeldung/abstractclasses/application/Application.java
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@@ -1,29 +0,0 @@
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/src/main/java/com/baeldung/abstractclasses/filereaders/BaseFileReader.java
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@@ -1,27 +0,0 @@
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/src/main/java/com/baeldung/abstractclasses/filereaders/LowercaseFileReader.java
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@@ -1,15 +0,0 @@
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/src/main/java/com/baeldung/abstractclasses/filereaders/UppercaseFileReader.java
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@@ -1,15 +0,0 @@
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();
}
}

11
core-java-modules/core-java/src/main/java/com/baeldung/basicsyntax/SimpleAddition.java
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@@ -1,11 +0,0 @@
package com.baeldung.basicsyntax;
public class SimpleAddition {
public static void main(String[] args) {
int a = 10;
int b = 5;
double c = a + b;
System.out.println( a + " + " + b + " = " + c);
}
}

9
core-java-modules/core-java/src/main/java/com/baeldung/jar/JarExample.java
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@@ -1,9 +0,0 @@
package com.baeldung.jar;
public class JarExample {
public static void main(String[] args) {
System.out.println("Hello Baeldung Reader!");
}
}

1
core-java-modules/core-java/src/main/java/com/baeldung/jar/example_manifest.txt
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@@ -1 +0,0 @@
Main-Class: com.baeldung.jar.JarExample

8
core-java-modules/core-java/src/main/java/com/baeldung/manifest/AppExample.java
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@@ -1,8 +0,0 @@
package com.baeldung.manifest;
public class AppExample {
public static void main(String[] args){
System.out.println("AppExample executed!");
}
}

83
core-java-modules/core-java/src/main/java/com/baeldung/manifest/ExecuteJarFile.java
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@@ -1,83 +0,0 @@
package com.baeldung.manifest;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
public class ExecuteJarFile {
private static final String DELIMITER = " ";
private static final String WORK_PATH = "src/main/java/com/baeldung/manifest";
private static final String MANIFEST_MF_PATH = WORK_PATH + "/MANIFEST.MF";
private static final String MAIN_MANIFEST_ATTRIBUTE = "Main-Class: com.baeldung.manifest.AppExample";
private static final String COMPILE_COMMAND = "javac -d . AppExample.java";
private static final String CREATE_JAR_WITHOUT_MF_ATT_COMMAND = "jar cvf example.jar com/baeldung/manifest/AppExample.class";
private static final String CREATE_JAR_WITH_MF_ATT_COMMAND = "jar cvmf MANIFEST.MF example.jar com/baeldung/manifest/AppExample.class";
private static final String EXECUTE_JAR_COMMAND = "java -jar example.jar";
public static void main(String[] args) {
System.out.println(executeJarWithoutManifestAttribute());
System.out.println(executeJarWithManifestAttribute());
}
public static String executeJarWithoutManifestAttribute() {
return executeJar(CREATE_JAR_WITHOUT_MF_ATT_COMMAND);
}
public static String executeJarWithManifestAttribute() {
createManifestFile();
return executeJar(CREATE_JAR_WITH_MF_ATT_COMMAND);
}
private static void createManifestFile() {
BufferedWriter writer;
try {
writer = new BufferedWriter(new FileWriter(MANIFEST_MF_PATH));
writer.write(MAIN_MANIFEST_ATTRIBUTE);
writer.newLine();
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
private static String executeJar(String createJarCommand) {
executeCommand(COMPILE_COMMAND);
executeCommand(createJarCommand);
return executeCommand(EXECUTE_JAR_COMMAND);
}
private static String executeCommand(String command) {
String output = null;
try {
output = collectOutput(runProcess(command));
} catch (Exception ex) {
System.out.println(ex);
}
return output;
}
private static String collectOutput(Process process) throws IOException {
StringBuffer output = new StringBuffer();
BufferedReader outputReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = "";
while ((line = outputReader.readLine()) != null) {
output.append(line + "\n");
}
return output.toString();
}
private static Process runProcess(String command) throws IOException, InterruptedException {
ProcessBuilder builder = new ProcessBuilder(command.split(DELIMITER));
builder.directory(new File(WORK_PATH).getAbsoluteFile());
builder.redirectErrorStream(true);
Process process = builder.start();
process.waitFor();
return process;
}
}

1
core-java-modules/core-java/src/main/java/com/baeldung/manifest/MANIFEST.MF
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@@ -1 +0,0 @@
Main-Class: com.baeldung.manifest.AppExample