From fdaf7334c87d4778326dce1dd293b846398684b4 Mon Sep 17 00:00:00 2001
From: seahi <me@seahi.me>
Date: Tue, 10 Dec 2024 10:39:13 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=87=E4=BB=B6=E5=9F=BA=E7=A1=80=E6=93=8D?=
 =?UTF-8?q?=E4=BD=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/chapter7/Example04.java |  8 ++++++++
 src/chapter7/Example05.java | 23 +++++++++++++++++++++++
 src/chapter7/Example06.java | 12 ++++++++++++
 src/chapter7/Example07.java | 28 ++++++++++++++++++++++++++++
 4 files changed, 71 insertions(+)

diff --git a/src/chapter7/Example04.java b/src/chapter7/Example04.java
index bf8994f..536effe 100644
--- a/src/chapter7/Example04.java
+++ b/src/chapter7/Example04.java
@@ -27,5 +27,13 @@ public class Example04 {
                 System.out.println(name);
             }
         }
+
+        if (file.exists() && file.isDirectory()) {
+            File[] files = file.listFiles(filter);
+            for (File currentFile : files) {
+                System.out.println(currentFile);
+            }
+        }
+
     }
 }
diff --git a/src/chapter7/Example05.java b/src/chapter7/Example05.java
index 3c84592..51b59f9 100644
--- a/src/chapter7/Example05.java
+++ b/src/chapter7/Example05.java
@@ -1,4 +1,27 @@
 package chapter7;
 
+import java.io.File;
+
 public class Example05 {
+    public static void main(String[] args) {
+        File file = new File("src");
+        showFiles(file);
+    }
+
+    /**
+     * 显示指定目录下的所有文件
+     * @param dir 目录
+     */
+    public static void showFiles(File dir) {
+        // 获取当前目录下所有文件的数组
+        File[] fileArray = dir.listFiles();
+        for (File file : fileArray) {
+            if (file.isDirectory()) {
+                // 如果是目录就递归调用
+                showFiles(file);
+            }
+            // 打印文件的绝对路径
+            System.out.println(file.getAbsolutePath());
+        }
+    }
 }
diff --git a/src/chapter7/Example06.java b/src/chapter7/Example06.java
index 961663b..93356d3 100644
--- a/src/chapter7/Example06.java
+++ b/src/chapter7/Example06.java
@@ -1,4 +1,16 @@
 package chapter7;
 
+import java.io.File;
+
 public class Example06 {
+    public static void main(String[] args) {
+        File file = new File("resources");
+        if (file.exists()) {
+            if (file.delete()) {
+                System.out.println("删除成功!");
+            } else {
+                System.out.println("删除失败!");
+            }
+        }
+    }
 }
diff --git a/src/chapter7/Example07.java b/src/chapter7/Example07.java
index 539d959..b1d6551 100644
--- a/src/chapter7/Example07.java
+++ b/src/chapter7/Example07.java
@@ -1,4 +1,32 @@
 package chapter7;
 
+import java.io.File;
+
 public class Example07 {
+    public static void main(String[] args) {
+        File dir = new File("d:/hello");
+        deleteFiles(dir);
+    }
+
+    /**
+     * 删除指定目录下的所有文件（包括子目录）
+     * @param dir 目录
+     */
+    public static void deleteFiles(File dir) {
+        if (dir.exists()) {
+            File[] files = dir.listFiles();
+            // 删除当前目录下的所有文件
+            for (File file : files) {
+                // 如果是目录就递归调用
+                if (file.isDirectory()) {
+                    deleteFiles(file);
+                } else {
+                    // 如果是文件就删除
+                    file.delete();
+                }
+            }
+            // 删除当前目录
+            dir.delete();
+        }
+    }
 }