template refactored, parts extracted.

src/main/java/de/kreth/property2java/Configuration.java

@@ -12,7 +12,6 @@ import java.util.Map;
 import org.apache.commons.text.WordUtils;
 
 import de.kreth.property2java.config.Regex;
-import de.kreth.property2java.processor.Format;
 
 public interface Configuration {
 

src/main/java/de/kreth/property2java/Format.java

@@ -1,4 +1,4 @@
-package de.kreth.property2java.processor;
+package de.kreth.property2java;
 
 import java.util.PropertyResourceBundle;
 

src/main/java/de/kreth/property2java/config/FreemarkerConfig.java

@@ -2,7 +2,7 @@ package de.kreth.property2java.config;
 
 import java.io.IOException;
 
-import de.kreth.property2java.processor.Format;
+import de.kreth.property2java.Format;
 import freemarker.template.Configuration;
 import freemarker.template.Template;
 

src/main/java/de/kreth/property2java/processor/GenerateProperty2Java.java

@@ -6,6 +6,8 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import de.kreth.property2java.Format;
+
 @Target(TYPE)
 @Retention(RetentionPolicy.SOURCE)
 /**

src/main/java/de/kreth/property2java/processor/GenerateResourceBundleProperty2Java.java

@@ -7,6 +7,8 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import de.kreth.property2java.Format;
+
 @Target(TYPE)
 @Retention(RetentionPolicy.SOURCE)
 @Repeatable(value = GenerateResourceBundleProperty2Javas.class)

src/main/java/de/kreth/property2java/processor/ProcessorConfiguration.java

@@ -19,6 +19,7 @@ import javax.tools.FileObject;
 import javax.tools.StandardLocation;
 
 import de.kreth.property2java.Configuration;
+import de.kreth.property2java.Format;
 import de.kreth.property2java.Generator;
 import de.kreth.property2java.GeneratorException;
 

src/main/java/de/kreth/property2java/processor/Property2JavaGenerator.java

@@ -16,6 +16,7 @@ import javax.lang.model.element.Element;
 import javax.lang.model.element.TypeElement;
 import javax.tools.Diagnostic.Kind;
 
+import de.kreth.property2java.Format;
 import de.kreth.property2java.GeneratorException;
 
 @SupportedAnnotationTypes({ "de.kreth.property2java.processor.GenerateProperty2Java",

src/main/resources/template/enum_template.tpl

@@ -1,6 +1,4 @@
-<#if package??>package ${package};
+<#include  "parts/package_part.tpl">import java.util.Properties;
-
-</#if>import java.util.Properties;
 import java.util.ResourceBundle;
 import java.util.function.UnaryOperator;
 
@@ -11,17 +9,7 @@ import javax.annotation.processing.Generated;
  * {@link #getValue()} gives the key for the entry, with {@link #getString(UnaryOperator<String>)}
  * the value is given directly.
  */
-@Generated(date = "${generation_date}", value = "${generator_name}")
+<#include  "parts/enum_head_values.tpl">
-public enum ${classname} {
-
-<#list entries as e>
-	/**
-	 * ${e.key} = "${e.value}"
-	 */
-	${e.constant} ("${e.key}")<#sep>,
-</#sep>
-</#list>;
-
 	private final String value;
 
 	private ${classname} (String value) {

src/main/resources/template/enum_template_with_initializer.tpl

@@ -1,6 +1,4 @@
-<#if package??>package ${package};
+<#include  "parts/package_part.tpl">import java.util.Properties;
-
-</#if>import java.util.Properties;
 import java.util.ResourceBundle;
 import java.util.function.UnaryOperator;
 
@@ -11,17 +9,7 @@ import javax.annotation.processing.Generated;
  * {@link #getValue()} gives the key for the entry, with {@link #getText()} the value for the key is given directly.
  * This enum needs to be initialized before any use by {@link #init(UnaryOperator)}.
  */
-@Generated(date = "${generation_date}", value = "${generator_name}")
+<#include  "parts/enum_head_values.tpl">
-public enum ${classname} {
-
-<#list entries as e>
-	/**
-	 * ${e.key} = "${e.value}"
-	 */
-	${e.constant} ("${e.key}")<#sep>,
-</#sep>
-</#list>;
-
 	private static UnaryOperator<String> function;
 	private final String value;
 

src/main/resources/template/enum_template_with_inner_properties.tpl

@@ -1,32 +1,28 @@
-<#if package??>package ${package};
+<#include "parts/package_part.tpl">import java.io.IOException;
-
+import java.io.UncheckedIOException;
-</#if>import java.util.Properties;
+import java.util.Properties;
-import java.util.PropertyResourceBundle;
-import java.util.ResourceBundle;
-import java.util.function.UnaryOperator;
 
 import javax.annotation.processing.Generated;
 
 /**
  * Property keys from ${fileName}
  */
-@Generated(date = "${generation_date}", value = "${generator_name}")
+<#include  "parts/enum_head_values.tpl">
-public enum ${classname} {
-
-<#list entries as e>
-	/**
-	 * ${e.key} = "${e.value}"
-	 */
-	${e.constant} ("${e.key}")<#sep>,
-</#sep>
-</#list>;
-
-	private final String value;
-
 	private ${classname} (String value) {
 		this.value = value;
 	}
 
+	private static Properties properties = new Properties();
+	static {
+		try {
+			properties.load(${classname}.class.getResourceAsStream("/${fileName}"));
+		} catch (IOException e) {
+			throw new UncheckedIOException(e);
+		}
+	}
+	
+	private final String value;
+
 	/**
 	 * Represented Key in property File.
 	 * @return key
@@ -35,14 +31,12 @@ public enum ${classname} {
 		return value;
 	}
 
-    private static ResourceBundle bundle = PropertyResourceBundle.getBundle("${bundle_base_name}");
-
 	/**
 	 * The Text for this Key from PropertyResourceBundle
 	 * @return human readable text
 	 */
     public String getText() {
-		return bundle.getString(value);
+		return properties.getProperty(value);
     }
 
 }

src/main/resources/template/enum_template_with_inner_propertyresourcebundle.tpl

@@ -1,9 +1,5 @@
-<#if package??>package ${package};
+<#include  "parts/package_part.tpl">import java.util.PropertyResourceBundle;
-
-</#if>import java.util.Properties;
-import java.util.PropertyResourceBundle;
 import java.util.ResourceBundle;
-import java.util.function.UnaryOperator;
 
 import javax.annotation.processing.Generated;
 
@@ -12,16 +8,8 @@ import javax.annotation.processing.Generated;
  * {@link #getValue()} gives the key for the entry, with {@link #getText()} the value for the key is given directly.
  * Initializationis generated also.
  */
-@Generated(date = "${generation_date}", value = "${generator_name}")
+<#include  "parts/enum_head_values.tpl">
-public enum ${classname} {
+    private static ResourceBundle bundle = PropertyResourceBundle.getBundle("${bundle_base_name}");
-
-<#list entries as e>
-	/**
-	 * ${e.key} = "${e.value}"
-	 */
-	${e.constant} ("${e.key}")<#sep>,
-</#sep>
-</#list>;
 
 	private final String value;
 
@@ -37,8 +25,6 @@ public enum ${classname} {
 		return value;
 	}
 
-    private static ResourceBundle bundle = PropertyResourceBundle.getBundle("${bundle_base_name}");
-
 	/**
 	 * The Text for this Key from PropertyResourceBundle
 	 * @return human readable text

src/main/resources/template/parts/enum_head_values.tpl

@@ -0,0 +1,11 @@
+
+@Generated(date = "${generation_date}", value = "${generator_name}")
+public enum ${classname} {
+
+<#list entries as e>
+	/**
+	 * ${e.key} = "${e.value}"
+	 */
+	${e.constant} ("${e.key}")<#sep>,
+</#sep>
+</#list>;

src/main/resources/template/parts/package_part.tpl

@@ -0,0 +1,3 @@
+<#if package??>package ${package};
+
+</#if>

src/test/java/de/kreth/property2java/GeneratorTests.java

@@ -1,5 +1,6 @@
 package de.kreth.property2java;
 
+import static de.kreth.property2java.TestPropertiesSource.testProperties;
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
@@ -13,7 +14,6 @@ import static org.mockito.Mockito.when;
 import java.io.File;
 import java.io.IOException;
 import java.io.Reader;
-import java.io.StringReader;
 import java.io.StringWriter;
 import java.io.Writer;
 import java.util.Arrays;
@@ -29,8 +29,6 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.mockito.Mockito;
 
-import de.kreth.property2java.processor.Format;
-
 class GeneratorTests {
 
 	private String path = "application.properties";
@@ -45,8 +43,9 @@ class GeneratorTests {
 		input.put(path, testProperties());
 
 		config = Mockito.spy(TestImplConfig.class);
+		
 		when(config.getRootPath()).thenReturn(new File(".").toPath());
-		when(config.getFormat()).thenReturn(Format.WithInitializer);
+		when(config.getFormat()).thenReturn(Format.WithUnaryOperatorParameter);
 		when(config.getInput()).thenReturn(input);
 		when(config.mapFilenameToClassName(anyString())).thenCallRealMethod();
 		when(config.outputCharset()).thenCallRealMethod();
@@ -148,22 +147,4 @@ class GeneratorTests {
 		return line.contains("\t" + key + " ");
 	}
 
-	private StringReader testProperties() {
-		return new StringReader("\r\n" + "label = \r\n" + "\r\n" + "label.addarticle    = Add Article\r\n"
-				+ "label.cancel        = Cancel\r\n" + "label.close         = Close\r\n"
-				+ "label.delete        = Delete\r\n" + "label.discart       = Discart\r\n"
-				+ "label.loggedin      = Logged in:\r\n" + "label.logout        = Logout\r\n"
-				+ "label.ok            = OK\r\n" + "label.store         = Store\r\n"
-				+ "label.preview       = Preview\r\n" + "label.open          = Open\r\n"
-				+ "label.user.register = Register\r\n" + "\r\n"
-				+ "message.article.priceerror             = Please set the price.\r\n"
-				+ "message.delete.text                    = Delete {0}?\r\n"
-				+ "message.delete.title                   = Really delete?\r\n"
-				+ "message.invoiceitem.allfieldsmustbeset = Start, end and article must not be \\r\\n"
-				+ "                                         empty!\r\n"
-				+ "message.invoiceitem.startbeforeend     = End must be later than start.\r\n"
-				+ "message.user.create.success            = Thanks {0} created!\r\n"
-				+ "message.user.loginfailure              = Login Error! Wrong user or password?\r\n"
-				+ "message.user.passwordmissmatch         = Passwords don't match.\r\n" + "");
-	}
 }

src/test/java/de/kreth/property2java/GeneratorWithInnerPropertiesTest.java

@@ -0,0 +1,189 @@
+package de.kreth.property2java;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.Reader;
+import java.io.StringWriter;
+import java.io.Writer;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.StringTokenizer;
+import java.util.stream.Collectors;
+
+import static de.kreth.property2java.TestPropertiesSource.testProperties;
+
+import org.hamcrest.Matchers;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+public class GeneratorWithInnerPropertiesTest {
+
+	private String path = "application.properties";
+
+	private Configuration config;
+
+	private Generator generator;
+
+	@BeforeEach
+	void setUp() throws Exception {
+		Map<String, Reader> input = new HashMap<>();
+		input.put(path, testProperties());
+
+		config = Mockito.spy(TestImplConfig.class);
+		
+		when(config.getRootPath()).thenReturn(new File(".").toPath());
+		when(config.getFormat()).thenReturn(Format.WithInnerPropertyLoader);
+		when(config.getInput()).thenReturn(input);
+		when(config.mapFilenameToClassName(anyString())).thenCallRealMethod();
+		when(config.outputCharset()).thenCallRealMethod();
+
+		generator = new Generator(config);
+	}
+
+
+	@Test
+	void testClassDefinition() throws IOException, GeneratorException {
+
+		when(config.getPackage()).thenReturn("de.kreth.property2java");
+		when(config.mapFilenameToClassName(anyString())).thenCallRealMethod();
+
+		StringWriter out = new StringWriter();
+		when(config.outWriter(anyString())).thenReturn(out);
+
+		generator.start();
+
+		String sourceCode = out.toString().trim();
+		StringTokenizer sourceTokenizer = new StringTokenizer(sourceCode, "\n");
+		String linePackage = null;
+		String lineClass = null;
+		int countOpenBaces = 0;
+		int countCloseBaces = 0;
+		while (sourceTokenizer.hasMoreTokens()) {
+			String line = sourceTokenizer.nextToken();
+			if (line.trim().startsWith("package")) {
+				linePackage = line;
+			} else if (line.trim().startsWith("public enum")) {
+				lineClass = line;
+			}
+			if (line.contains("{")) {
+				countOpenBaces++;
+			}
+			if (line.contains("}")) {
+				countCloseBaces++;
+			}
+		}
+
+		assertEquals(countCloseBaces, countOpenBaces,
+				"Count of Braces doesn't match. Open = " + countOpenBaces + ", Close = " + countCloseBaces);
+
+		assertNotNull(linePackage);
+		assertNotNull(lineClass);
+
+		assertThat(linePackage,
+				Matchers.stringContainsInOrder(Arrays.asList("package", "de.kreth.property2java", ";")));
+
+		assertThat(lineClass,
+				Matchers.stringContainsInOrder(Arrays.asList("public", "enum", "Application_Properties")));
+
+	}
+
+	@Test
+	void testResourceLoad() throws IOException, GeneratorException {
+
+		when(config.getPackage()).thenReturn("de.kreth.property2java");
+		when(config.mapFilenameToClassName(anyString())).thenCallRealMethod();
+
+		StringWriter out = new StringWriter();
+		when(config.outWriter(anyString())).thenReturn(out);
+
+		generator.start();
+
+		String sourceCode = out.toString().trim();
+		StringTokenizer sourceTokenizer = new StringTokenizer(sourceCode, "\n");
+		String declaration = null;
+		String load = null;
+		while (sourceTokenizer.hasMoreTokens()) {
+			String line = sourceTokenizer.nextToken();
+			if (line.contains("Properties") 
+					&& !line.contains("import") 
+					&& !line.contains("enum") 
+					&& !line.contains("class")) {
+				declaration = line;
+			} else if (line.contains(".load")) {
+				load = line;
+			}
+		}
+		assertNotNull(declaration);
+		assertNotNull(load);
+
+		assertThat(declaration,
+				Matchers.stringContainsInOrder(Arrays.asList("private", "static", "Properties", "properties", "=", "new Properties()", ";")));
+
+		assertThat(load,
+				Matchers.containsString("properties.load(Application_Properties.class.getResourceAsStream(\"/application.properties\"));"));
+
+	}
+	
+	@Test
+	void testOneInputGeneratesOneOutput() throws IOException, GeneratorException {
+
+		Writer out = mock(Writer.class);
+		Writer nonOut = mock(Writer.class);
+		when(config.outWriter(anyString())).thenReturn(out, nonOut);
+		generator.start();
+		verify(out).close();
+		verify(nonOut, never()).close();
+		verify(nonOut, never()).flush();
+	}
+
+	@Test
+	void testKeys() throws IOException, GeneratorException {
+
+		StringWriter out = new StringWriter();
+		when(config.outWriter(anyString())).thenReturn(out);
+		generator.start();
+
+		List<String> lines = out.toString().lines().filter(line -> line.contains(" (\"")).collect(Collectors.toList());
+
+		assertEquals(21, lines.size());
+		assertLineMatch(lines, "label", "label");
+		assertLineMatch(lines, "label_addarticle", "label.addarticle");
+		assertLineMatch(lines, "label_user_register", "label.user.register");
+		assertLineMatch(lines, "message_article_priceerror", "message.article.priceerror");
+		assertLineMatch(lines, "message_invoiceitem_startbeforeend", "message.invoiceitem.startbeforeend");
+		assertLineMatch(lines, "message_invoiceitem_allfieldsmustbeset", "message.invoiceitem.allfieldsmustbeset");
+	}
+
+	private void assertLineMatch(List<String> lines, String key, String expected) {
+		Optional<String> found = lines.stream().filter(line -> keyMatches(line, key)).findFirst();
+
+		assertTrue(found.isPresent(), "No line found with key = " + key);
+		final String line = found.get().trim();
+		int indexEquals = line.indexOf('(');
+		String value = line.substring(indexEquals + 1).trim().substring(1);
+		value = value.substring(0, value.length() - 3);
+		assertEquals(expected, value, "Line \"" + line + "\" don't match expected Value \"" + expected + "\"");
+
+	}
+
+	private boolean keyMatches(String line, String key) {
+		line = line.toLowerCase();
+		key = key.toLowerCase();
+		return line.contains("\t" + key + " ");
+	}
+
+}

src/test/java/de/kreth/property2java/TestPropertiesSource.java

@@ -0,0 +1,45 @@
+package de.kreth.property2java;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.StringReader;
+
+import de.kreth.property2java.generated.GenerateTheTest;
+
+public class TestPropertiesSource {
+
+	public static StringReader testProperties() {
+		return new StringReader("\r\n" + "label = \r\n" + "\r\n" + "label.addarticle    = Add Article\r\n"
+				+ "label.cancel        = Cancel\r\n" + "label.close         = Close\r\n"
+				+ "label.delete        = Delete\r\n" + "label.discart       = Discart\r\n"
+				+ "label.loggedin      = Logged in:\r\n" + "label.logout        = Logout\r\n"
+				+ "label.ok            = OK\r\n" + "label.store         = Store\r\n"
+				+ "label.preview       = Preview\r\n" + "label.open          = Open\r\n"
+				+ "label.user.register = Register\r\n" + "\r\n"
+				+ "message.article.priceerror             = Please set the price.\r\n"
+				+ "message.delete.text                    = Delete {0}?\r\n"
+				+ "message.delete.title                   = Really delete?\r\n"
+				+ "message.invoiceitem.allfieldsmustbeset = Start, end and article must not be \\r\\n"
+				+ "                                         empty!\r\n"
+				+ "message.invoiceitem.startbeforeend     = End must be later than start.\r\n"
+				+ "message.user.create.success            = Thanks {0} created!\r\n"
+				+ "message.user.loginfailure              = Login Error! Wrong user or password?\r\n"
+				+ "message.user.passwordmissmatch         = Passwords don't match.\r\n" + "");
+	}
+	
+	public static void main(String[] args) throws IOException {
+		File dir = new File("D:\\Markus\\programmierung\\workspace_clubhelper\\PropertyToJavaGenerator\\src\\test\\resources");
+
+		try (FileWriter out = new FileWriter(new File(dir, GenerateTheTest.PROPERTY_LOADER_PROPERTIES))) {
+			testProperties().transferTo(out);
+		}
+		
+		try (FileWriter out = new FileWriter(new File(dir, GenerateTheTest.UNARY_OPERATOR_PROPERTIES))) {
+			testProperties().transferTo(out);
+		}
+		try (FileWriter out = new FileWriter(new File(dir, GenerateTheTest.RESOURCE_BUNDLE))) {
+			testProperties().transferTo(out);
+		}
+	}
+}

src/test/java/de/kreth/property2java/generated/GenerateTheTest.java

@@ -0,0 +1,124 @@
+package de.kreth.property2java.generated;
+
+import java.io.IOException;
+import java.io.Reader;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.HashMap;
+import java.util.Map;
+
+import de.kreth.property2java.Configuration;
+import de.kreth.property2java.Format;
+import de.kreth.property2java.Generator;
+import de.kreth.property2java.GeneratorException;
+import de.kreth.property2java.TestPropertiesSource;
+
+public class GenerateTheTest {
+
+	public static final String PROPERTY_LOADER_PROPERTIES = "property_loader.properties";
+	public static final String UNARY_OPERATOR_PROPERTIES = "unary_operator.properties";
+	public static final String RESOURCE_BUNDLE = "resource_bundle.properties";
+	
+	public static void main(String[] args) throws IOException, GeneratorException {
+		Path current = Paths.get(".", "src", "test", "java", "de", "kreth", "property2java", "generated").toAbsolutePath().normalize();
+		System.out.println(current);
+		
+		withUnaryOperatorParameter(current);
+		withInnerPropertyLoader(current);
+		withResourceBundle(current);
+	}
+
+	private static void withResourceBundle(Path current) throws IOException, GeneratorException {
+		Format format = Format.WithInnerPropertyResourceBundle;
+		Map<String, Reader> input = new HashMap<>();
+		input.put(RESOURCE_BUNDLE, TestPropertiesSource.testProperties());
+		
+		Configuration config = new Configuration() {
+			
+			@Override
+			public Path getRootPath() {
+				return current;
+			}
+			
+			@Override
+			public String getPackage() {
+				return "de.kreth.property2java.generated";
+			}
+			
+			@Override
+			public Format getFormat() {
+				return format;
+			}
+			
+			@Override
+			public Map<String, Reader> getInput() {
+				return input;
+			}
+		};
+		Generator generator = new Generator(config);
+		generator.start();
+	}
+
+	private static void withUnaryOperatorParameter(Path current) throws IOException, GeneratorException {
+		Format format = Format.WithUnaryOperatorParameter;
+		Map<String, Reader> input = new HashMap<>();
+		input.put(UNARY_OPERATOR_PROPERTIES, TestPropertiesSource.testProperties());
+		
+		Configuration config = new Configuration() {
+			
+			@Override
+			public Path getRootPath() {
+				return current;
+			}
+			
+			@Override
+			public String getPackage() {
+				return "de.kreth.property2java.generated";
+			}
+			
+			@Override
+			public Format getFormat() {
+				return format;
+			}
+			
+			@Override
+			public Map<String, Reader> getInput() {
+				return input;
+			}
+		};
+		Generator generator = new Generator(config);
+		generator.start();
+	}
+
+	private static void withInnerPropertyLoader(Path current) throws IOException, GeneratorException {
+		Format format = Format.WithInnerPropertyLoader;
+		Map<String, Reader> input = new HashMap<>();
+		input.put(PROPERTY_LOADER_PROPERTIES, TestPropertiesSource.testProperties());
+		
+		Configuration config = new Configuration() {
+			
+			@Override
+			public Path getRootPath() {
+				return current;
+			}
+			
+			@Override
+			public String getPackage() {
+				return "de.kreth.property2java.generated";
+			}
+			
+			@Override
+			public Format getFormat() {
+				return format;
+			}
+			
+			@Override
+			public Map<String, Reader> getInput() {
+				return input;
+			}
+		};
+		Generator generator = new Generator(config);
+		generator.start();
+	}
+
+}

src/test/java/de/kreth/property2java/generated/Property_Loader_Properties.java

@@ -0,0 +1,132 @@
+package de.kreth.property2java.generated;
+
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.util.Properties;
+
+import javax.annotation.processing.Generated;
+
+/**
+ * Property keys from property_loader.properties
+ */
+
+@Generated(date = "05.08.2024, 22:43:54", value = "de.kreth.property2java.Generator")
+public enum Property_Loader_Properties {
+
+	/**
+	 * label = ""
+	 */
+	LABEL ("label"),
+	/**
+	 * label.addarticle = "Add Article"
+	 */
+	LABEL_ADDARTICLE ("label.addarticle"),
+	/**
+	 * label.cancel = "Cancel"
+	 */
+	LABEL_CANCEL ("label.cancel"),
+	/**
+	 * label.close = "Close"
+	 */
+	LABEL_CLOSE ("label.close"),
+	/**
+	 * label.delete = "Delete"
+	 */
+	LABEL_DELETE ("label.delete"),
+	/**
+	 * label.discart = "Discart"
+	 */
+	LABEL_DISCART ("label.discart"),
+	/**
+	 * label.loggedin = "Logged in:"
+	 */
+	LABEL_LOGGEDIN ("label.loggedin"),
+	/**
+	 * label.logout = "Logout"
+	 */
+	LABEL_LOGOUT ("label.logout"),
+	/**
+	 * label.ok = "OK"
+	 */
+	LABEL_OK ("label.ok"),
+	/**
+	 * label.open = "Open"
+	 */
+	LABEL_OPEN ("label.open"),
+	/**
+	 * label.preview = "Preview"
+	 */
+	LABEL_PREVIEW ("label.preview"),
+	/**
+	 * label.store = "Store"
+	 */
+	LABEL_STORE ("label.store"),
+	/**
+	 * label.user.register = "Register"
+	 */
+	LABEL_USER_REGISTER ("label.user.register"),
+	/**
+	 * message.article.priceerror = "Please set the price."
+	 */
+	MESSAGE_ARTICLE_PRICEERROR ("message.article.priceerror"),
+	/**
+	 * message.delete.text = "Delete {0}?"
+	 */
+	MESSAGE_DELETE_TEXT ("message.delete.text"),
+	/**
+	 * message.delete.title = "Really delete?"
+	 */
+	MESSAGE_DELETE_TITLE ("message.delete.title"),
+	/**
+	 * message.invoiceitem.allfieldsmustbeset = "Start, end and article must not be 
+                                         empty!"
+	 */
+	MESSAGE_INVOICEITEM_ALLFIELDSMUSTBESET ("message.invoiceitem.allfieldsmustbeset"),
+	/**
+	 * message.invoiceitem.startbeforeend = "End must be later than start."
+	 */
+	MESSAGE_INVOICEITEM_STARTBEFOREEND ("message.invoiceitem.startbeforeend"),
+	/**
+	 * message.user.create.success = "Thanks {0} created!"
+	 */
+	MESSAGE_USER_CREATE_SUCCESS ("message.user.create.success"),
+	/**
+	 * message.user.loginfailure = "Login Error! Wrong user or password?"
+	 */
+	MESSAGE_USER_LOGINFAILURE ("message.user.loginfailure"),
+	/**
+	 * message.user.passwordmissmatch = "Passwords don't match."
+	 */
+	MESSAGE_USER_PASSWORDMISSMATCH ("message.user.passwordmissmatch");
+	private Property_Loader_Properties (String value) {
+		this.value = value;
+	}
+
+	private static Properties properties = new Properties();
+	static {
+		try {
+			properties.load(Property_Loader_Properties.class.getResourceAsStream("/property_loader.properties"));
+		} catch (IOException e) {
+			throw new UncheckedIOException(e);
+		}
+	}
+	
+	private final String value;
+
+	/**
+	 * Represented Key in property File.
+	 * @return key
+	 */
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * The Text for this Key from PropertyResourceBundle
+	 * @return human readable text
+	 */
+    public String getText() {
+		return properties.getProperty(value);
+    }
+
+}

src/test/java/de/kreth/property2java/generated/Resource_Bundle_Properties.java

@@ -0,0 +1,126 @@
+package de.kreth.property2java.generated;
+
+import java.util.PropertyResourceBundle;
+import java.util.ResourceBundle;
+
+import javax.annotation.processing.Generated;
+
+/**
+ * Property keys from resource_bundle.properties
+ * {@link #getValue()} gives the key for the entry, with {@link #getText()} the value for the key is given directly.
+ * Initializationis generated also.
+ */
+
+@Generated(date = "05.08.2024, 22:43:54", value = "de.kreth.property2java.Generator")
+public enum Resource_Bundle_Properties {
+
+	/**
+	 * label = ""
+	 */
+	LABEL ("label"),
+	/**
+	 * label.addarticle = "Add Article"
+	 */
+	LABEL_ADDARTICLE ("label.addarticle"),
+	/**
+	 * label.cancel = "Cancel"
+	 */
+	LABEL_CANCEL ("label.cancel"),
+	/**
+	 * label.close = "Close"
+	 */
+	LABEL_CLOSE ("label.close"),
+	/**
+	 * label.delete = "Delete"
+	 */
+	LABEL_DELETE ("label.delete"),
+	/**
+	 * label.discart = "Discart"
+	 */
+	LABEL_DISCART ("label.discart"),
+	/**
+	 * label.loggedin = "Logged in:"
+	 */
+	LABEL_LOGGEDIN ("label.loggedin"),
+	/**
+	 * label.logout = "Logout"
+	 */
+	LABEL_LOGOUT ("label.logout"),
+	/**
+	 * label.ok = "OK"
+	 */
+	LABEL_OK ("label.ok"),
+	/**
+	 * label.open = "Open"
+	 */
+	LABEL_OPEN ("label.open"),
+	/**
+	 * label.preview = "Preview"
+	 */
+	LABEL_PREVIEW ("label.preview"),
+	/**
+	 * label.store = "Store"
+	 */
+	LABEL_STORE ("label.store"),
+	/**
+	 * label.user.register = "Register"
+	 */
+	LABEL_USER_REGISTER ("label.user.register"),
+	/**
+	 * message.article.priceerror = "Please set the price."
+	 */
+	MESSAGE_ARTICLE_PRICEERROR ("message.article.priceerror"),
+	/**
+	 * message.delete.text = "Delete {0}?"
+	 */
+	MESSAGE_DELETE_TEXT ("message.delete.text"),
+	/**
+	 * message.delete.title = "Really delete?"
+	 */
+	MESSAGE_DELETE_TITLE ("message.delete.title"),
+	/**
+	 * message.invoiceitem.allfieldsmustbeset = "Start, end and article must not be 
+                                         empty!"
+	 */
+	MESSAGE_INVOICEITEM_ALLFIELDSMUSTBESET ("message.invoiceitem.allfieldsmustbeset"),
+	/**
+	 * message.invoiceitem.startbeforeend = "End must be later than start."
+	 */
+	MESSAGE_INVOICEITEM_STARTBEFOREEND ("message.invoiceitem.startbeforeend"),
+	/**
+	 * message.user.create.success = "Thanks {0} created!"
+	 */
+	MESSAGE_USER_CREATE_SUCCESS ("message.user.create.success"),
+	/**
+	 * message.user.loginfailure = "Login Error! Wrong user or password?"
+	 */
+	MESSAGE_USER_LOGINFAILURE ("message.user.loginfailure"),
+	/**
+	 * message.user.passwordmissmatch = "Passwords don't match."
+	 */
+	MESSAGE_USER_PASSWORDMISSMATCH ("message.user.passwordmissmatch");
+    private static ResourceBundle bundle = PropertyResourceBundle.getBundle("resource_bundle");
+
+	private final String value;
+
+	private Resource_Bundle_Properties (String value) {
+		this.value = value;
+	}
+
+	/**
+	 * Represented Key in property File.
+	 * @return key
+	 */
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * The Text for this Key from PropertyResourceBundle
+	 * @return human readable text
+	 */
+    public String getText() {
+		return bundle.getString(value);
+    }
+
+}

src/test/java/de/kreth/property2java/generated/TestRealGenerated.java

@@ -0,0 +1,19 @@
+package de.kreth.property2java.generated;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+public class TestRealGenerated {
+
+	@Test
+	void propLoader() {
+		assertEquals("Please set the price.", Property_Loader_Properties.MESSAGE_ARTICLE_PRICEERROR.getText());
+	}
+
+	@Test
+	void resourceBundle() {
+		assertEquals("Login Error! Wrong user or password?", Resource_Bundle_Properties.MESSAGE_USER_LOGINFAILURE.getText());
+	}
+	
+}

src/test/java/de/kreth/property2java/generated/Unary_Operator_Properties.java

@@ -0,0 +1,127 @@
+package de.kreth.property2java.generated;
+
+import java.util.Properties;
+import java.util.ResourceBundle;
+import java.util.function.UnaryOperator;
+
+import javax.annotation.processing.Generated;
+
+/**
+ * Property keys from unary_operator.properties
+ * {@link #getValue()} gives the key for the entry, with {@link #getString(UnaryOperator<String>)}
+ * the value is given directly.
+ */
+
+@Generated(date = "05.08.2024, 22:43:54", value = "de.kreth.property2java.Generator")
+public enum Unary_Operator_Properties {
+
+	/**
+	 * label = ""
+	 */
+	LABEL ("label"),
+	/**
+	 * label.addarticle = "Add Article"
+	 */
+	LABEL_ADDARTICLE ("label.addarticle"),
+	/**
+	 * label.cancel = "Cancel"
+	 */
+	LABEL_CANCEL ("label.cancel"),
+	/**
+	 * label.close = "Close"
+	 */
+	LABEL_CLOSE ("label.close"),
+	/**
+	 * label.delete = "Delete"
+	 */
+	LABEL_DELETE ("label.delete"),
+	/**
+	 * label.discart = "Discart"
+	 */
+	LABEL_DISCART ("label.discart"),
+	/**
+	 * label.loggedin = "Logged in:"
+	 */
+	LABEL_LOGGEDIN ("label.loggedin"),
+	/**
+	 * label.logout = "Logout"
+	 */
+	LABEL_LOGOUT ("label.logout"),
+	/**
+	 * label.ok = "OK"
+	 */
+	LABEL_OK ("label.ok"),
+	/**
+	 * label.open = "Open"
+	 */
+	LABEL_OPEN ("label.open"),
+	/**
+	 * label.preview = "Preview"
+	 */
+	LABEL_PREVIEW ("label.preview"),
+	/**
+	 * label.store = "Store"
+	 */
+	LABEL_STORE ("label.store"),
+	/**
+	 * label.user.register = "Register"
+	 */
+	LABEL_USER_REGISTER ("label.user.register"),
+	/**
+	 * message.article.priceerror = "Please set the price."
+	 */
+	MESSAGE_ARTICLE_PRICEERROR ("message.article.priceerror"),
+	/**
+	 * message.delete.text = "Delete {0}?"
+	 */
+	MESSAGE_DELETE_TEXT ("message.delete.text"),
+	/**
+	 * message.delete.title = "Really delete?"
+	 */
+	MESSAGE_DELETE_TITLE ("message.delete.title"),
+	/**
+	 * message.invoiceitem.allfieldsmustbeset = "Start, end and article must not be 
+                                         empty!"
+	 */
+	MESSAGE_INVOICEITEM_ALLFIELDSMUSTBESET ("message.invoiceitem.allfieldsmustbeset"),
+	/**
+	 * message.invoiceitem.startbeforeend = "End must be later than start."
+	 */
+	MESSAGE_INVOICEITEM_STARTBEFOREEND ("message.invoiceitem.startbeforeend"),
+	/**
+	 * message.user.create.success = "Thanks {0} created!"
+	 */
+	MESSAGE_USER_CREATE_SUCCESS ("message.user.create.success"),
+	/**
+	 * message.user.loginfailure = "Login Error! Wrong user or password?"
+	 */
+	MESSAGE_USER_LOGINFAILURE ("message.user.loginfailure"),
+	/**
+	 * message.user.passwordmissmatch = "Passwords don't match."
+	 */
+	MESSAGE_USER_PASSWORDMISSMATCH ("message.user.passwordmissmatch");
+	private final String value;
+
+	private Unary_Operator_Properties (String value) {
+		this.value = value;
+	}
+
+	/**
+	 * Represented Key in property File.
+	 * @return key
+	 */
+	public String getValue() {
+		return value;
+	}
+
+	/**
+	 * Resolves the value for this key from the parameter function.
+	 * <p>
+	 * e.g. <code>Unary_Operator_Properties.getString(resBundle::getString)</code>
+	 * @param resourceFunction {@link Properties#getProperty(String)} or {@link ResourceBundle#getString(String)}
+	 * @return
+	 */
+	public String getString(UnaryOperator<String> resourceFunction) {
+		return resourceFunction.apply(value);
+	}
+}

src/test/resources/property_loader.properties

@@ -0,0 +1,24 @@
+
+label = 
+
+label.addarticle    = Add Article
+label.cancel        = Cancel
+label.close         = Close
+label.delete        = Delete
+label.discart       = Discart
+label.loggedin      = Logged in:
+label.logout        = Logout
+label.ok            = OK
+label.store         = Store
+label.preview       = Preview
+label.open          = Open
+label.user.register = Register
+
+message.article.priceerror             = Please set the price.
+message.delete.text                    = Delete {0}?
+message.delete.title                   = Really delete?
+message.invoiceitem.allfieldsmustbeset = Start, end and article must not be \r\n                                         empty!
+message.invoiceitem.startbeforeend     = End must be later than start.
+message.user.create.success            = Thanks {0} created!
+message.user.loginfailure              = Login Error! Wrong user or password?
+message.user.passwordmissmatch         = Passwords don't match.

src/test/resources/resource_bundle.properties

@@ -0,0 +1,24 @@
+
+label = 
+
+label.addarticle    = Add Article
+label.cancel        = Cancel
+label.close         = Close
+label.delete        = Delete
+label.discart       = Discart
+label.loggedin      = Logged in:
+label.logout        = Logout
+label.ok            = OK
+label.store         = Store
+label.preview       = Preview
+label.open          = Open
+label.user.register = Register
+
+message.article.priceerror             = Please set the price.
+message.delete.text                    = Delete {0}?
+message.delete.title                   = Really delete?
+message.invoiceitem.allfieldsmustbeset = Start, end and article must not be \r\n                                         empty!
+message.invoiceitem.startbeforeend     = End must be later than start.
+message.user.create.success            = Thanks {0} created!
+message.user.loginfailure              = Login Error! Wrong user or password?
+message.user.passwordmissmatch         = Passwords don't match.

src/test/resources/unary_operator.properties

@@ -0,0 +1,24 @@
+
+label = 
+
+label.addarticle    = Add Article
+label.cancel        = Cancel
+label.close         = Close
+label.delete        = Delete
+label.discart       = Discart
+label.loggedin      = Logged in:
+label.logout        = Logout
+label.ok            = OK
+label.store         = Store
+label.preview       = Preview
+label.open          = Open
+label.user.register = Register
+
+message.article.priceerror             = Please set the price.
+message.delete.text                    = Delete {0}?
+message.delete.title                   = Really delete?
+message.invoiceitem.allfieldsmustbeset = Start, end and article must not be \r\n                                         empty!
+message.invoiceitem.startbeforeend     = End must be later than start.
+message.user.create.success            = Thanks {0} created!
+message.user.loginfailure              = Login Error! Wrong user or password?
+message.user.passwordmissmatch         = Passwords don't match.