Log missing main class or module when running. Closes #69

src/main/java/rife/bld/operations/CompileOperation.java

@@ -87,12 +87,19 @@ public class CompileOperation extends AbstractOperation<CompileOperation> {
         for (var directory : mainSourceDirectories()) {
             sources.addAll(FileUtils.getJavaFileList(directory));
         }
+
+        if (sources.isEmpty()) {
+            if (!silent()) {
+                System.err.println("No main source files found.");
+            }
+        } else {
             executeBuildSources(
                     compileMainClasspath(),
                     compileMainModulePath(),
                     sources,
                     buildMainDirectory());
         }
+    }
 
     /**
      * Part of the {@link #execute} operation, builds the test sources.
@@ -105,12 +112,19 @@ public class CompileOperation extends AbstractOperation<CompileOperation> {
         for (var directory : testSourceDirectories()) {
             sources.addAll(FileUtils.getJavaFileList(directory));
         }
+
+        if (sources.isEmpty()) {
+            if (!silent()) {
+                System.err.println("No test source files found.");
+            }
+        } else {
             executeBuildSources(
                     compileTestClasspath(),
                     compileTestModulePath(),
                     sources,
                     buildTestDirectory());
         }
+    }
 
     /**
      * Part of the {@link #execute} operation, build sources to a destination.

src/main/java/rife/bld/operations/RunOperation.java

@@ -49,6 +49,9 @@ public class RunOperation extends AbstractProcessOperation<RunOperation> {
         else if (mainClass() != null && !mainClass().isEmpty()){
             args.add(mainClass());
         }
+        else if (!silent()) {
+            System.err.println("No main class or module specified.");
+        }
 
         args.addAll(runOptions());
 

src/main/resources/BLD_VERSION

@@ -1 +1 @@
-2.3.0
+2.3.1-SNAPSHOT