Java ObjectInputStream readUnshared（）方法与示例

ObjectInputStream类readUnshared()方法 (ObjectInputStream Class readUnshared() method)

readUnshared() method is available in java.io package.
readUnshared()方法在java.io包中可用。
readUnshared() method is used to read "non-shared" or "unshared" object from the ObjectInputStream.
readUnshared()方法用于从ObjectInputStream读取“非共享”或“非共享”对象。
readUnshared() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
readUnshared()方法是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。
readUnshared() method may throw an exception at the time of reading unshared objects.
readUnshared()方法在读取非共享对象时可能会引发异常。
- StreamCorruptedException: This exception may throw when the control information in the stream is not consistent.StreamCorruptedException ：当流中的控制信息不一致时，可能引发此异常。
- IOException: This exception may throw when getting any input/output error while performing.IOException ：在执行过程中遇到任何输入/输出错误时，可能引发此异常。
- ClassNotFoundException: This exception may throw when the serialized object Class could not exist.ClassNotFoundException ：当序列化的对象Class不存在时，可能引发此异常。
- OptionalDataException: This exception may throw when unexpected primitive data found instead of objects.OptionalDataException ：当发现意外的原始数据而不是对象时，可能引发此异常。

Syntax:

句法：

    public Object readUnshared();

Parameter(s):

参数：

It does not accept any parameter.
它不接受任何参数。

Return value:

返回值：

The return type of the method is Object, it returns reference to deserialized object.

该方法的返回类型为Object ，它返回对反序列化对象的引用。

Example:

例：

// Java program to demonstrate the example 
// of Object readUnshared() method of 
// ObjectInputStream
import java.io.*;
public class ReadUnsharedOfOIS {
public static void main(String[] args) throws Exception {
Integer in = new Integer(10);
// Instantiates ObjectOutputStream , ObjectInputStream 
// FileInputStream and FileOutputStream
FileOutputStream file_out_stm = new FileOutputStream("D:\\includehelp.txt");
ObjectOutputStream obj_out_stm = new ObjectOutputStream(file_out_stm);
FileInputStream file_in_stm = new FileInputStream("D:\\includehelp.txt");
ObjectInputStream obj_in_stm = new ObjectInputStream(file_in_stm);
// By using writeUnshared() method is to write
// unshared object to the obj_out_stm stream
obj_out_stm.writeUnshared( in );
obj_out_stm.flush();
// By using readUnshared() method is to read
// unshared object and display fields
Object o = (Object) obj_in_stm.readUnshared();
System.out.println("obj_in_stm.readUnshared(): " + o);
}
}

Output

输出量