程序包 java.io

接口 ObjectInput

所有超级接口:

AutoCloseable, DataInput

所有已知实现类:

ObjectInputStream

public interface ObjectInput
extends DataInput, AutoCloseable

ObjectInput extends the DataInput interface to include the reading of objects. DataInput includes methods for the input of primitive types, ObjectInput extends that interface to include objects, arrays, and Strings.

从以下版本开始:

JDK1.1

另请参阅:

InputStream, ObjectOutputStream, ObjectInputStream

方法概要

限定符和类型	方法	说明
int	available()	Returns the number of bytes that can be read without blocking.
void	close()	Closes the input stream.
int	read()	Reads a byte of data.
int	read(byte[] b)	Reads into an array of bytes.
int	read(byte[] b, int off, int len)	Reads into an array of bytes.
Object	readObject()	Read and return an object.
long	skip(long n)	Skips n bytes of input.

从接口继承的方法 java.io.DataInput

readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, skipBytes

方法详细资料

readObject

Object readObject()
           throws ClassNotFoundException,
                  IOException

Read and return an object. The class that implements this interface defines where the object is "read" from.

返回:

the object read from the stream

抛出:

ClassNotFoundException - If the class of a serialized object cannot be found.

IOException - If any of the usual Input/Output related exceptions occur.

read

int read()
  throws IOException

Reads a byte of data. This method will block if no input is available.

返回:

the byte read, or -1 if the end of the stream is reached.

抛出:

IOException - If an I/O error has occurred.

read

int read(byte[] b)
  throws IOException

Reads into an array of bytes. This method will block until some input is available.

参数:

b - the buffer into which the data is read

返回:

the actual number of bytes read, -1 is returned when the end of the stream is reached.

抛出:

IOException - If an I/O error has occurred.

read

int read(byte[] b,
         int off,
         int len)
  throws IOException

Reads into an array of bytes. This method will block until some input is available.

参数:

b - the buffer into which the data is read

off - the start offset of the data

len - the maximum number of bytes read

返回:

the actual number of bytes read, -1 is returned when the end of the stream is reached.

抛出:

IOException - If an I/O error has occurred.

skip

long skip(long n)
   throws IOException

Skips n bytes of input.

参数:

n - the number of bytes to be skipped

返回:

the actual number of bytes skipped.

抛出:

IOException - If an I/O error has occurred.

available

int available()
       throws IOException

Returns the number of bytes that can be read without blocking.

返回:

the number of available bytes.

抛出:

IOException - If an I/O error has occurred.

close

void close()
    throws IOException

Closes the input stream. Must be called to release any resources associated with the stream.

指定者:

close 在接口中 AutoCloseable

抛出:

IOException - If an I/O error has occurred.