流操作java.io.EOFException求解释 - 黑马程序员技术交流社区

import java.io.*;
class Person implements Serializable
{
private String name;
String age;
static String country = "cn";
Person(String name,String age)
{
this.name = name;
this.age = age;
}
public void setName(String name)
{
this.name = name;
}
public String getName()
{
return name;
}
public void setAge(String age)
{
this.age = age;
}
public String getAge()
{
return age;
}
public int hashCode()
{
return name.hashCode()+Integer.parseInt(age)*18;
}
public boolean equals(Object obj)
{
if (!(obj instanceof Person))
{
return false;
}
Person p = (Person)obj;
return this.name.equals(p.name)&&this.age.equals(p.age);
}
public String toString()
{
return name+":"+age+":"+country;
}
}
class ObjStreamDemo
{
public static void main(String[] args) throws IOException,ClassNotFoundException
{
writeObj();//将对象写入到person.txt文件中。
readObj();//将person.txt文件中的对象打印到控制台上。
}
public static void readObj() throws IOException,ClassNotFoundException
{
ObjectInputStream ois = new ObjectInputStream(
new FileInputStream("person.txt"));
Object obj = null;
while ((obj=ois.readObject())!=null )
{
if (!(obj instanceof Person))
{
throw new RuntimeException ("对象错误");
}
Person p = (Person) obj;
System.out.println(p);
}
ois.close();
}
public static void writeObj() throws IOException
{
ObjectOutputStream oos = new ObjectOutputStream(
new FileOutputStream("person.txt"));
oos.writeObject(new Person("lisi","39"));
oos.writeObject(new Person("wangwu","40"));
oos.writeObject(new Person("sunliu","50"));
oos.flush();
oos.close();
}
}

复制代码