diff --git a/RadiationController b/RadiationController
new file mode 100644
index 0000000..cbd667c
--- /dev/null
+++ b/RadiationController
@@ -0,0 +1,37 @@
+public class RadiationController {
+    private boolean isXRayMode = false;
+    private boolean isElectronMode = false;
+    private int dose = 0;
+
+    public void setXRayMode() {
+        isXRayMode = true;
+        isElectronMode = false;
+    }
+
+    public void setElectronMode() {
+        isElectronMode = true;
+        isXRayMode = false;
+    }
+
+    public void setDose(int dose) {
+        this.dose = dose;
+    }
+
+    public void start() {
+        if (isXRayMode) {
+            deliverXRayDose();
+        } else if (isElectronMode) {
+            deliverElectronDose();
+        }
+    }
+
+    private void deliverXRayDose() {
+        System.out.println("Delivering X-Ray dose: " + dose);
+        // ... deliver X-Ray dose
+    }
+
+    private void deliverElectronDose() {
+        System.out.println("Delivering Electron dose: " + dose);
+        // ... deliver Electron dose
+    }
+}