1、定義類?Foo、Foo1、Foo2?、?Bar、?Bar1、Bar2時要定義在類ObjectSeriaDemo的花括號外面
2、要運行起來的話，要在當前項目下新建個文件夾，文件夾的名字為demo

package?com.imooc;

import?java.io.FileInputStream;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.io.ObjectInputStream;
import?java.io.ObjectOutputStream;
import?java.io.Serializable;

public?class?ObjectSeriaDemo?{
	public?static?void?main(String[]?args)?throws?Exception?{
		//?TODO?Auto-generated?method?stub
		/*
		?*?ObjectOutputStream?oos=new?ObjectOutputStream(?new
		?*?FileOutputStream("demo/obj1.dat"));?Foo2?foo2=new?Foo2();
		?*?oos.writeObject(foo2);?oos.flush();?oos.close();?/*?ObjectInputStream
		?*?ois=new?ObjectInputStream(?new?FileInputStream("demo/obj1.dat"));
		?*?Foo2?foo2=(Foo2)ois.readObject();?System.out.println(foo2);
		?*?ois.close();
		?*/

		ObjectOutputStream?oos?=?new?ObjectOutputStream(new?FileOutputStream(
				"demo/obj1.dat"));
		Bar2?bar2?=?new?Bar2();
		oos.writeObject(bar2);
		oos.flush();
		oos.close();
		/*
		?*?ObjectInputStream?ois=new?ObjectInputStream(?new
		?*?FileInputStream("demo/obj1.dat"));?Bar2?bar2=(Bar2)ois.readObject();
		?*?System.out.println(bar2);?ois.close();
		?*/
	}

	class?Foo?implements?Serializable?{
		public?Foo()?{
			System.out.println("foo");
		}
	}

	class?Foo1?extends?Foo?{
		public?Foo1()?{
			System.out.println("foo1");
		}
	}

	class?Foo2?extends?Foo1?{
		public?Foo2()?{
			System.out.println("foo2");
		}
	}

	class?Bar?{
		public?Bar()?{
			System.out.println("bar");

		}
	}

	class?Bar1?extends?Bar?implements?Serializable?{
		public?Bar1()?{
			System.out.println("bar1");

		}
	}

	class?Bar2?extends?Bar1?{
		public?Bar2()?{
			System.out.println("bar2");
		}
	}
}