Updaded README with examples, etc.

README.md

@@ -1,4 +1,4 @@
-#  [b<span style="color:orange">l</span>d](https://rife2.com/bldb) [Checkstyle](https://checkstyle.sourceforge.io/) Extension
+# [Checkstyle](https://checkstyle.sourceforge.io/) Extension for [b<span style="color:orange">l</span>d](https://rife2.com/bldb) 
 
 [![License](https://img.shields.io/badge/license-Apache%20License%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![Java](https://img.shields.io/badge/java-17%2B-blue)](https://www.oracle.com/java/technologies/javase/jdk17-archive-downloads.html)
@@ -9,4 +9,29 @@
 
 To install, please refer to the [extensions documentation](https://github.com/rife2/bld/wiki/Extensions).
 
-**TBD**
+To check your code with Chesktyle, include the following in your build file:
+
+```java
+@BuildCommand(summary = "Check code style")
+public void checkstyle() throws Exception {
+    new CheckstyleOperation()
+            .fromProject(this)
+            .configurationFile("config/sun_checks.xml")
+            .execute();
+}
+```
+
+```
+./bld checkstyle
+```
+
+Please check the [CheckstyleOperation documentation](https://rife2.github.io/bld-checkstyle/rife/bld/extension/CheckstyleOperation.html#method-summary) for all available configuration options.
+
+### Checkstyle Dependency
+
+Don't forget to add a Checkstyle `test` dependency to your build file, as it is not provided by the extension. For example:
+
+```java
+repositories = List.of(MAVEN_CENTRAL);
+scope(test).include(dependency("com.puppycrawl.tools", "checkstyle", version(10, 12, 2)));
+

examples/src/main/java/com/example/ExamplesMain.java

@@ -1,11 +1,11 @@
 package com.example;
 
 public class ExamplesMain {
-    public String getMessage() {
-        return "Hello World!";
-    }
-
     public static void main(String[] args) {
         System.out.println(new ExamplesMain().getMessage());
     }
+
+    public String getMessage() {
+        return "Hello World!";
+    }
 }

examples/src/test/java/com/example/ExamplesTest.java

@@ -1,6 +1,10 @@
 package com.example;
 
 public class ExamplesTest {
+    public static void main(String[] args) {
+        new ExamplesTest().verifyHello();
+    }
+
     void verifyHello() {
         if (!"Hello World!".equals(new ExamplesMain().getMessage())) {
             throw new AssertionError();
@@ -8,8 +12,4 @@ public class ExamplesTest {
             System.out.println("Succeeded");
         }
     }
-
-    public static void main(String[] args) {
-        new ExamplesTest().verifyHello();
-    }
 }