From 077745e89228116961b462ff7175a45389d9c27c Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Sat, 21 Mar 2026 15:37:22 +0800
Subject: [PATCH] =?UTF-8?q?=E8=BF=9B=E9=98=B6day09-JDK7,9=E7=9A=84IO?=
 =?UTF-8?q?=E5=BC=82=E5=B8=B8=E5=A4=84=E7=90=86=E6=96=B9=E5=BC=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../src/com/inmind/io_exception05/Demo14.java | 47 +++++++++++++++++++
 .../src/com/inmind/io_exception05/Demo15.java | 33 +++++++++++++
 .../src/com/inmind/io_exception05/Demo16.java | 18 +++++++
 .../src/com/inmind/io_exception05/Demo17.java | 27 +++++++++++
 .../com/inmind/io_exception05/Student.java    |  8 ++++
 5 files changed, 133 insertions(+)
 create mode 100644 javaSE-day09/src/com/inmind/io_exception05/Demo14.java
 create mode 100644 javaSE-day09/src/com/inmind/io_exception05/Demo15.java
 create mode 100644 javaSE-day09/src/com/inmind/io_exception05/Demo16.java
 create mode 100644 javaSE-day09/src/com/inmind/io_exception05/Demo17.java
 create mode 100644 javaSE-day09/src/com/inmind/io_exception05/Student.java

diff --git a/javaSE-day09/src/com/inmind/io_exception05/Demo14.java b/javaSE-day09/src/com/inmind/io_exception05/Demo14.java
new file mode 100644
index 0000000..ff24a02
--- /dev/null
+++ b/javaSE-day09/src/com/inmind/io_exception05/Demo14.java
@@ -0,0 +1,47 @@
+package com.inmind.io_exception05;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+//jdk7之前的标准代码
+public class Demo14 {
+    public static void main(String[] args)  {
+        FileInputStream fis = null;
+        FileOutputStream fos = null;
+        try {
+            //创建流对象（输入，输出）
+             fis = new FileInputStream("D:\\io_test\\upload\\1.jpg");
+             fos = new FileOutputStream("D:\\io_test\\upload\\3.jpg");
+
+            //不停地读取一个字节数组，写出一个字节数组，直到读完
+            int len;//保存读取到的字节的个数
+            byte[] bytes = new byte[1024];
+            while ((len = fis.read(bytes)) != -1) {
+                fos.write(bytes,0,len);//读多少个字节，一次性写出多少个字节
+            }
+
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }finally {
+            //资源释放
+            if (fis != null) {
+                try {
+                    fis.close();
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+                fis = null;//当前流已经关闭，如果不设置为null，fis可能会引用这堆内存中的一个无用liu对象，造成内存泄漏
+            }
+
+            if (fos != null) {
+                try {
+                    fos.close();
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+
+                fos = null;
+            }
+        }
+    }
+}
diff --git a/javaSE-day09/src/com/inmind/io_exception05/Demo15.java b/javaSE-day09/src/com/inmind/io_exception05/Demo15.java
new file mode 100644
index 0000000..7a2b723
--- /dev/null
+++ b/javaSE-day09/src/com/inmind/io_exception05/Demo15.java
@@ -0,0 +1,33 @@
+package com.inmind.io_exception05;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+/*
+JDK7异常的处理方式(了解)
+    格式：
+    try(流的创建方式){
+
+    }catch{
+
+    }
+
+    作用：当try-cath代码执行完毕，程序会自动去调用try(流的创建方式)的close方法
+ */
+public class Demo15 {
+    public static void main(String[] args)  {
+        //创建字节输入流
+        try (FileInputStream fis = new FileInputStream("a.txt")) {
+            //不停地读字节
+            int c ;//保存读取的字节数据
+            while ((c = fis.read()) != -1) {
+                System.out.print((char) c);
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+    }
+}
diff --git a/javaSE-day09/src/com/inmind/io_exception05/Demo16.java b/javaSE-day09/src/com/inmind/io_exception05/Demo16.java
new file mode 100644
index 0000000..756664a
--- /dev/null
+++ b/javaSE-day09/src/com/inmind/io_exception05/Demo16.java
@@ -0,0 +1,18 @@
+package com.inmind.io_exception05;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+
+public class Demo16 {
+    public static void main(String[] args) {
+        //创建字节输入流
+        try (Student s = new Student()) {
+            System.out.println("try中的代码执行了");
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        System.out.println("程序结束");
+    }
+}
diff --git a/javaSE-day09/src/com/inmind/io_exception05/Demo17.java b/javaSE-day09/src/com/inmind/io_exception05/Demo17.java
new file mode 100644
index 0000000..362958f
--- /dev/null
+++ b/javaSE-day09/src/com/inmind/io_exception05/Demo17.java
@@ -0,0 +1,27 @@
+package com.inmind.io_exception05;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+/*
+JDK9的IO异常处理改进(了解)
+
+    作用：当try-cath代码执行完毕，程序会自动去调用try(流的创建方式)的close方法
+ */
+public class Demo17 {
+    public static void main(String[] args) throws FileNotFoundException {
+        FileInputStream fis = new FileInputStream("a.txt");
+        //创建字节输入流
+        try (fis) {
+            //不停地读字节
+            int c ;//保存读取的字节数据
+            while ((c = fis.read()) != -1) {
+                System.out.print((char) c);
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/javaSE-day09/src/com/inmind/io_exception05/Student.java b/javaSE-day09/src/com/inmind/io_exception05/Student.java
new file mode 100644
index 0000000..30aa28d
--- /dev/null
+++ b/javaSE-day09/src/com/inmind/io_exception05/Student.java
@@ -0,0 +1,8 @@
+package com.inmind.io_exception05;
+
+public class Student implements AutoCloseable{
+    @Override
+    public void close() throws Exception {
+        System.out.println("Student类的close方法执行了");
+    }
+}