Java instructions

README.md

@@ -1,6 +1,6 @@
-== Rerwiting frontend files
+== Rewriting frontend files
 
-The frontend tool is in the `frontend folder`
+The frontend tool is in the `frontend` folder
 
 To test this tool, do the setup dance once
 
@@ -18,6 +18,17 @@ node convert.js in/grid-columns.js
 
 This will convert `in/grid-columns.js` into a Lit element and place the output in `in/grid-columns.out.js`
 
-== The Java version
+== Rewriting Java files
 
-Coming soon
+The Java tool is in the `java` folder
+
+To test this tool, do the setup dance once
+```
+cd java
+mvn package
+```
+
+Then run it and give it a PolymerTemplate Java file
+```
+mvn exec:exec -Dfile=/my/project/src/main/java/my/package/MyTemplate.java
+```

java/pom.xml

@@ -13,6 +13,7 @@
         <version.roaster>2.26.0.Final</version.roaster>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <maven.compiler.source>${java.version}</maven.compiler.source>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <junit.jupiter.version>5.9.0</junit.jupiter.version>
         <junit.platform.version>1.8.1</junit.platform.version>
     </properties>
@@ -63,7 +64,25 @@
             <version>${version.roaster}</version>
             <scope>runtime</scope>
         </dependency>
-
     </dependencies>
 
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>3.1.0</version>
+                <configuration>
+                    <executable>java</executable>
+                    <arguments>
+                        <argument>-classpath</argument>
+                        <classpath />
+                        <argument>org.vaadin.artur.polymertolit.Transformer</argument>
+                        <argument>${file}</argument>
+                    </arguments>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
 </project>