From e19a0657db383316f4a2532260eca15f3f07660e Mon Sep 17 00:00:00 2001
From: Lixinyi <3382734605@qq.com>
Date: Thu, 23 Apr 2026 15:30:12 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20''?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

W7-李鑫怡-202506050312
---
 ScoreAverage.class | Bin 0 -> 2453 bytes
 ScoreAverage.java  |  52 +++++++++++++++++++++++++++++++++++++++++++++
 scores.txt         |   5 +++++
 3 files changed, 57 insertions(+)
 create mode 100644 ScoreAverage.class
 create mode 100644 ScoreAverage.java
 create mode 100644 scores.txt

diff --git a/ScoreAverage.class b/ScoreAverage.class
new file mode 100644
index 0000000000000000000000000000000000000000..7cada3cd58bb292879347b3a2ad889125a17eb1f
GIT binary patch
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diff --git a/ScoreAverage.java b/ScoreAverage.java
new file mode 100644
index 0000000..f99c1b3
--- /dev/null
+++ b/ScoreAverage.java
@@ -0,0 +1,52 @@
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+
+public class ScoreAverage {
+    public static void main(String[] args) {
+        // 1. 定义变量：总分、有效成绩数量
+        int sum = 0;
+        int count = 0;
+
+        // 2. 使用 try-with-resources 自动关闭流，确保文件一定被关闭
+        try (BufferedReader br = new BufferedReader(new FileReader("scores.txt"))) {
+            String line;
+            while ((line = br.readLine()) != null) {
+                // 去除首尾空格，避免空行或空格干扰
+                line = line.trim();
+                if (line.isEmpty()) {
+                    continue; // 跳过空行
+                }
+
+                // 3. 解析数字并累加
+                int score = Integer.parseInt(line);
+                sum += score;
+                count++;
+            }
+
+            // 4. 计算并输出平均分（避免除以0）
+            if (count > 0) {
+                double average = (double) sum / count;
+                System.out.println("读取到 " + count + " 个成绩");
+                System.out.printf("总分：%d，平均分：%.2f%n", sum, average);
+            } else {
+                System.out.println("文件中没有有效成绩数据");
+            }
+
+        // 异常1：文件不存在/路径错误
+        } catch (IOException e) {
+            System.out.println("文件读取错误：" + e.getMessage());
+            System.out.println("请检查 scores.txt 文件是否存在，或路径是否正确");
+
+        // 异常2：数字格式错误（比如文件里有非数字内容）
+        } catch (NumberFormatException e) {
+            System.out.println("数据格式错误：文件中包含无法解析为整数的内容");
+            System.out.println("错误详情：" + e.getMessage());
+
+        // 兜底异常，捕获其他意外错误
+        } catch (Exception e) {
+            System.out.println("程序发生意外错误：" + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+}
\ No newline at end of file
diff --git a/scores.txt b/scores.txt
new file mode 100644
index 0000000..6d371a5
--- /dev/null
+++ b/scores.txt
@@ -0,0 +1,5 @@
+85
+92
+78
+90
+88
\ No newline at end of file