diff --git a/w7/Scorecalculator.java b/w7/Scorecalculator.java
new file mode 100644
index 0000000..84151f0
--- /dev/null
+++ b/w7/Scorecalculator.java
@@ -0,0 +1,29 @@
+import java.io.*;
+public class Scorecalculator{
+	public static void main(String[] args) {
+		String filepath="scores.txt";
+		int sum=0;
+		int count=0;
+		try (BufferedReader br = new BufferedReader(new FileReader(filepath))){
+			String line;
+			while ((line=br.readLine()) != null) {
+				try {
+					sum+=Integer.parseInt(line.trim());
+					count++;
+				} catch (NumberFormatException e){
+					System.out.println("数字格式错误，跳过该行："+ line);
+				}
+			}
+			if (count>0){
+				double average=(double)sum/count;
+				System.out.println("平均分"+average);
+			} else {
+				System.out.println("没有有效成绩数据");
+			}
+		} catch (FileNotFoundException e) {
+			System.out.println("错误：文件不存在-"+filepath);
+		} catch (IOException e) {
+			System.out.println("错误，读取文件时发生错误-"+e.getMessage());
+		}
+	}
+}
\ No newline at end of file