1 files changed, 23 insertions, 40 deletions

diff --git a/src/main/java/org/traccar/protocol/Gl200BinaryProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gl200BinaryProtocolDecoder.java
index ecd1f5bfa..359af8e5a 100644
--- a/src/main/java/org/traccar/protocol/Gl200BinaryProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gl200BinaryProtocolDecoder.java
@@ -230,52 +230,39 @@ public class Gl200BinaryProtocolDecoder extends BaseProtocolDecoder {
         position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
 
         switch (type) {
-            case MSG_EVT_BPL:
-                buf.readUnsignedShort(); // backup battery voltage
-                break;
-            case MSG_EVT_VGN:
-            case MSG_EVT_VGF:
+            case MSG_EVT_BPL -> buf.readUnsignedShort(); // backup battery voltage
+            case MSG_EVT_VGN, MSG_EVT_VGF -> {
                 buf.readUnsignedShort(); // reserved
                 buf.readUnsignedByte(); // report type
                 buf.readUnsignedInt(); // ignition duration
-                break;
-            case MSG_EVT_UPD:
+            }
+            case MSG_EVT_UPD -> {
                 buf.readUnsignedShort(); // code
                 buf.readUnsignedByte(); // retry
-                break;
-            case MSG_EVT_IDF:
-                buf.readUnsignedInt(); // idling duration
-                break;
-            case MSG_EVT_GSS:
+            }
+            case MSG_EVT_IDF -> buf.readUnsignedInt(); // idling duration
+            case MSG_EVT_GSS -> {
                 buf.readUnsignedByte(); // gps signal status
                 buf.readUnsignedInt(); // reserved
-                break;
-            case MSG_EVT_GES:
+            }
+            case MSG_EVT_GES -> {
                 buf.readUnsignedShort(); // trigger geo id
                 buf.readUnsignedByte(); // trigger geo enable
                 buf.readUnsignedByte(); // trigger mode
                 buf.readUnsignedInt(); // radius
                 buf.readUnsignedInt(); // check interval
-                break;
-            case MSG_EVT_GPJ:
+            }
+            case MSG_EVT_GPJ -> {
                 buf.readUnsignedByte(); // cw jamming value
                 buf.readUnsignedByte(); // gps jamming state
-                break;
-            case MSG_EVT_RMD:
-                buf.readUnsignedByte(); // roaming state
-                break;
-            case MSG_EVT_JDS:
-                buf.readUnsignedByte(); // jamming state
-                break;
-            case MSG_EVT_CRA:
-                buf.readUnsignedByte(); // crash counter
-                break;
-            case MSG_EVT_UPC:
+            }
+            case MSG_EVT_RMD -> buf.readUnsignedByte(); // roaming state
+            case MSG_EVT_JDS -> buf.readUnsignedByte(); // jamming state
+            case MSG_EVT_CRA -> buf.readUnsignedByte(); // crash counter
+            case MSG_EVT_UPC -> {
                 buf.readUnsignedByte(); // command id
                 buf.readUnsignedShort(); // result
-                break;
-            default:
-                break;
+            }
         }
 
         buf.readUnsignedByte(); // count
@@ -388,16 +375,12 @@ public class Gl200BinaryProtocolDecoder extends BaseProtocolDecoder {
 
         ByteBuf buf = (ByteBuf) msg;
 
-        switch (buf.readSlice(4).toString(StandardCharsets.US_ASCII)) {
-            case "+RSP":
-                return decodeLocation(channel, remoteAddress, buf);
-            case "+INF":
-                return decodeInformation(channel, remoteAddress, buf);
-            case "+EVT":
-                return decodeEvent(channel, remoteAddress, buf);
-            default:
-                return null;
-        }
+        return switch (buf.readSlice(4).toString(StandardCharsets.US_ASCII)) {
+            case "+RSP" -> decodeLocation(channel, remoteAddress, buf);
+            case "+INF" -> decodeInformation(channel, remoteAddress, buf);
+            case "+EVT" -> decodeEvent(channel, remoteAddress, buf);
+            default -> null;
+        };
     }
 
 }