BAEL-2076: loading resources (#7347)

* commits for BAEL-2076

- Created core-java-io2 module
- added resource loading example code
- added core-java-io2 to tutorials pom.xml

* Committing review changes

- change to try-with-resources
- change the order of main method

* Reformatting try-with-resources

* Moving resources example from core-java-io2 to core-java-io. Removing core-java-io2

* Removing stray core-java-io2 in tutorials pom file.

core-java-modules/core-java-io/pom.xml

@@ -207,6 +207,21 @@
                     <target>${maven.compiler.target}</target>
                 </configuration>
             </plugin>
+            
+            <plugin>
+                <!-- Build an executable JAR -->
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>${maven-jar-plugin.version}</version>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <addClasspath>true</addClasspath>
+                            <mainClass>com.baeldung.resource.MyResourceLoader</mainClass>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 
@@ -274,6 +289,8 @@
         <!-- Mime Type Libraries -->
         <tika.version>1.18</tika.version>
         <jmime-magic.version>0.1.5</jmime-magic.version>
+        <maven-jar-plugin.version>3.1.0</maven-jar-plugin.version>
+
     </properties>
 
 </project>

core-java-modules/core-java-io/src/main/java/com/baeldung/resource/MyResourceLoader.java

@@ -0,0 +1,42 @@
+package com.baeldung.resource;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.stream.Collectors;
+
+public class MyResourceLoader {
+
+    private void loadFileWithReader() throws IOException {
+
+        try (FileReader fileReader = new FileReader("src/main/resources/input.txt");
+             BufferedReader reader = new BufferedReader(fileReader)) {
+            String contents = reader.lines()
+                .collect(Collectors.joining(System.lineSeparator()));
+            System.out.println(contents);
+        }
+
+    }
+
+    private void loadFileAsResource() throws IOException {
+
+        try (InputStream inputStream = getClass().getResourceAsStream("/input.txt");
+             BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
+            String contents = reader.lines()
+                .collect(Collectors.joining(System.lineSeparator()));
+            System.out.println(contents);
+        }
+    }
+
+    public static void main(String[] args) throws IOException {
+
+        MyResourceLoader resourceLoader = new MyResourceLoader();
+
+        resourceLoader.loadFileAsResource();
+        resourceLoader.loadFileWithReader();
+
+    }
+
+}