diff --git a/DataCleaner.java b/DataCleaner.java
new file mode 100644
index 0000000..b9a0ab9
--- /dev/null
+++ b/DataCleaner.java
@@ -0,0 +1,28 @@
+public class DataCleaner {
+	public static void main(String[] args) {
+        	int[] sensorData = {85, -5, 92, 0, 105, 999, 88, 76};
+        
+        	int validSum = 0;   // 有效数据总和
+        	int validCount = 0; // 有效数据个数
+        
+        	for (int data : sensorData){
+			if (data==999) {
+				System.out.println("致命错误：传感器掉线，终止处理");
+				break;
+			}
+			if (data<=0||data>100) {
+				System.out.println("警告：发现越界数据[" + data + "]，已跳过");
+				continue;
+			}
+			validSum +=data;
+			validCount++;
+		}
+        
+		if (validCount>0){
+			double average=(double) validSum/validCount;
+			System.out.println(average);
+		}else {
+			System.out.println("无有效数据");
+		}
+	}
+}
\ No newline at end of file