进阶day10-.反序列化流读取对象(ObjectInputStream)

javaSE-day10/src/com/inmind/object_stream03/Demo12.java

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+package com.inmind.object_stream03;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.util.function.Supplier;
+
+/*
+反序列化流读取对象(ObjectInputStream)
+
+    构造方法：
+        ObjectInputStream(InputStream in) 创建从指定的InputStream读取的ObjectInputStream。
+
+    常用方法：
+        Object readObject() 从ObjectInputStream读取一个对象。
+ */
+public class Demo12 {
+    //将之前的student.txt读取到java进程中生成一个叫张三，18的Student对象
+    public static void main(String[] args) throws IOException, ClassNotFoundException {
+        ObjectInputStream ois = new ObjectInputStream(new FileInputStream("student.txt"));
+        Object o = ois.readObject();
+        if (o instanceof Student) {
+            Student s = ((Student) o);
+            System.out.println(s.name);
+            System.out.println(s.age);
+        }
+        ois.close();
+    }
+}