Resource folder with example text file and image. ResourceTester class.

5 files changed, 52 insertions, 2 deletions

diff --git a/Javalabbar.iml b/Javalabbar.iml
index c90834f..54b8c26 100644
--- a/Javalabbar.iml
+++ b/Javalabbar.iml
@@ -3,6 +3,7 @@
   <component name="NewModuleRootManager" inherit-compiler-output="true">
     <exclude-output />
     <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
     <orderEntry type="inheritedJdk" />
diff --git a/resources/README.md b/resources/README.md
new file mode 100644
index 0000000..d3dd293
--- /dev/null
+++ b/resources/README.md
@@ -0,0 +1,2 @@
+I den här katalogen kan man lägga *resursfiler* -- bilder, ljudfiler och andra filer som programmet ska kunna komma åt när det körs. Du kan
+se exempel på detta i klassen `Test`. 
\ No newline at end of file
diff --git a/resources/images/hello_world.png b/resources/images/hello_world.png
new file mode 100644
index 0000000..b142f6f
--- /dev/null
+++ b/resources/images/hello_world.png
diff --git a/src/se/liu/liuid123/Main.java b/src/se/liu/liuid123/HelloWorld.java
index 9ad934c..36e2290 100644
--- a/src/se/liu/liuid123/Main.java
+++ b/src/se/liu/liuid123/HelloWorld.java
@@ -3,8 +3,8 @@ package se.liu.liuid123;
 /**
  * A simple test class used to verify that your development environment is working.
  */
-public class Main {
-
+public class HelloWorld
+{
     public static void main(String[] args) {
         System.out.println("Hello world!");
     }
diff --git a/src/se/liu/liuid123/ResourceTester.java b/src/se/liu/liuid123/ResourceTester.java
new file mode 100644
index 0000000..89bd438
--- /dev/null
+++ b/src/se/liu/liuid123/ResourceTester.java
@@ -0,0 +1,47 @@
+package se.liu.liuid123;
+
+import javax.swing.*;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.URL;
+
+/**
+ * A simple test class used to exemplify how resources work.
+ */
+public class ResourceTester
+{
+    public static void main(String[] args) {
+        // Reading a text file from *resources* is a bit cumbersome.
+        // We don't know if the file is stored directly in the file system
+        // or inside an *archive* (JAR file), so should access it
+        // as a "resource" identified by an URL.
+        final URL readme = ClassLoader.getSystemResource("README.md");
+
+        // Then we can use this URL to open an *input stream*,
+        // create an InputStreamReader that converts bytes to characters
+        // according to the default character encoding (typically UTF-8),
+        // and then createa a BufferedReader which can be used to read lines.
+        //
+        // All of this is insiude a "try" statement that ensures the streams
+        // and readers are closed when we are done.
+        try (final BufferedReader reader = new BufferedReader(new InputStreamReader(readme.openStream()))) {
+            System.out.println("Contents of the file:");
+
+            // Read and print strings until you get null
+            String str = reader.readLine();
+            while (str != null) {
+                System.out.println(str);
+                str = reader.readLine();
+            }
+        } catch (IOException e) {
+            // Needs to be handled somehow...
+            e.printStackTrace();
+        }
+
+        final URL image = ClassLoader.getSystemResource("images/hello_world.png");
+
+        ImageIcon icon = new ImageIcon(image);
+        System.out.println("Read an image with width " + icon.getIconWidth() + " and height " + icon.getIconHeight());
+    }
+}