Add java properties example

dub.json

@@ -26,6 +26,17 @@
       "targetPath": "bin/examples/json",
       "workingDirectory": "bin/examples/json"
     },
+    {
+      "name": "javaPropertiesExample",
+      "targetType": "executable",
+      "description": "Example on how to read and work with Java properties.",
+      "targetName": "javaPropertiesExample",
+      "sourcePaths": ["examples/javaProperties"],
+      "importPaths": ["source"],
+      "copyFiles": ["examples/javaProperties/application.properties"],
+      "targetPath": "bin/examples/javaProperties",
+      "workingDirectory": "bin/examples/javaProperties"
+    },
     {
       "name": "valueSubstitutionExample",
       "targetType": "executable",

examples/javaProperties/app.d

@@ -0,0 +1,37 @@
+/**
+ * Authors:
+ *  Mike Bierlee, m.bierlee@lostmoment.com
+ * Copyright: 2022 Mike Bierlee
+ * License:
+ *  This software is licensed under the terms of the MIT license.
+ *  The full terms of the license can be found in the LICENSE file.
+ */
+
+import mirage.java : parseJavaProperties, loadJavaProperties;
+
+import std.stdio : writeln;
+import std.conv : to;
+
+void main() {
+    auto config = loadJavaProperties("application.properties");
+    auto serverConfig = config.getConfig("server");
+    auto databaseConfig = parseJavaProperties("
+        host=localhost
+        port=5432
+    ");
+
+    auto applicationName = config.get("application.name");
+
+    auto httpHost = serverConfig.get("host");
+    auto httpPort = serverConfig.get!uint("port");
+    auto httpProtocol = serverConfig.get("protocol");
+
+    auto dbHost = databaseConfig.get("host");
+    auto dbPort = databaseConfig.get!uint("port");
+
+    writeln("Starting " ~ applicationName ~ "...");
+    writeln("Connecting to database at " ~ dbHost ~ ":" ~ dbPort.to!string ~ "...");
+    writeln(
+        "HTTP server now listening at " ~ httpProtocol ~ "://" ~ httpHost ~ ":" ~ httpPort
+            .to!string);
+}

examples/javaProperties/application.properties

@@ -0,0 +1,4 @@
+application.name=Fake HTTP Server
+server.host=localhost
+server.port=8080
+server.protocol=https

makefile

@@ -12,12 +12,16 @@ clean:
 	dub clean
 
 run-examples: run-jsonExample \
+	run-javaPropertiesExample \
 	run-valueSubstitutionExample \
 	run-manipulationExample
 
 run-jsonExample:
 	dub run --build=release --config=jsonExample
 
+run-javaPropertiesExample:
+	dub run --build=release --config=javaPropertiesExample
+
 run-valueSubstitutionExample:
 	dub run --build=release --config=valueSubstitutionExample