diff --git a/java/builder.go b/java/builder.go
index f55a7c7..cefb916 100644
--- a/java/builder.go
+++ b/java/builder.go
@@ -399,6 +399,17 @@
 	})
 }
 
+func GenerateMainClassManifest(ctx android.ModuleContext, outputFile android.WritablePath, mainClass string) {
+	ctx.Build(pctx, android.BuildParams{
+		Rule:        android.WriteFile,
+		Description: "manifest",
+		Output:      outputFile,
+		Args: map[string]string{
+			"content": "Main-Class: " + mainClass + "\n",
+		},
+	})
+}
+
 type classpath []android.Path
 
 func (x *classpath) FormJavaClassPath(optName string) string {