diff --git a/w2/w2.java b/w2/w2.java
new file mode 100644
index 0000000..0590d92
--- /dev/null
+++ b/w2/w2.java
@@ -0,0 +1,23 @@
+public class ZuoYe {
+    public static void main(String[] args){
+        int[] sensorData ={85,-592,0,105,999,88,76};
+        int validSum=0;
+        int validCount=0;
+        for (int num:sensorData){
+            if (num<=100 && num>=1){
+                validSum=validSum+num;
+                validCount=validCount+1;
+            }else if (num<=0||num<999){
+                System.out.println("警告：发现越界数据["+num+"],已跳过");
+            }else if(num==999){
+                System.out.println("致命错误：传感器掉线，终止处理");
+            }
+        }
+        if (validCount<0){
+            System.out.println("无有效数据");
+        }else{
+            double qq=(double)validSum/validCount;
+            System.out.println(qq);
+        }
+    }
+}
\ No newline at end of file