Add all 23 GoF design pattern implementations

02-structural/bridge/RemoteControl.java

@@ -0,0 +1,27 @@
+package bridge;
+/**
+ * Abstraction — the remote control.
+ *
+ * Key point: RemoteControl holds a Device (the bridge) and delegates
+ * all actual work to it. It adds higher-level semantics on top:
+ * "togglePower" instead of separate enable()/disable() calls.
+ */
+public class RemoteControl {
+    protected Device device;  // THE BRIDGE
+    public RemoteControl(Device device) {
+        this.device = device;
+        System.out.println("Remote paired with: " + device.getName());
+    }
+    // User action → device operation translation
+    public void togglePower() {
+        if (device.isEnabled()) {
+            device.disable();
+        } else {
+            device.enable();
+        }
+    }
+    public void volumeUp()   { device.setVolume(device.getVolume() + 10); }
+    public void volumeDown() { device.setVolume(device.getVolume() - 10); }
+    public void channelUp()   { device.setChannel(device.getChannel() + 1); }
+    public void channelDown() { device.setChannel(device.getChannel() - 1); }
+}