• PipedInputStream je također povezan s PipedOutputStream. Dakle, podaci se mogu pisati pomoću PipedOutputStream i mogu se pisati pomoću PipedInputStream. Ali korištenje obje niti u isto vrijeme stvorit će zastoj za niti.
• Kaže se da je cijev prekinuta ako nit koja je davala bajtove podataka povezanom izlaznom toku više nije živa.

public class PipedInputStream extends InputStream

PipedInputStream() :stvara PipedInputStream da nije povezan. PipedInputStream(int pSize) :stvara PipedInputStream koji nije povezan s navedenom veličinom cijevi. PipedInputStream(PipedOutputStream outStream) :stvara PipedInputStream koji je povezan s PipedOutputStream - 'outStream'. PipedInputStream(PipedOutputStream outStream int pSize) :stvara Piped Input Stream koji je povezan s Piped Output Streamom s navedenom veličinom cijevi.

int čitanje(): Reads the next byte of data from this piped input stream.The value byte is returned as an int in the range 0 to 255. This method blocks until input data is available the end of the stream is detected or an exception is thrown. Java

// Java program illustrating the working of read() method import java.io.*; public class NewClass {  public static void main(String[] args) throws IOException  {  PipedInputStream geek_input = new PipedInputStream();  PipedOutputStream geek_output = new PipedOutputStream();  try  {  // Use of connect() : connecting geek_input with geek_output  geek_input.connect(geek_output);  // Use of read() method :  geek_output.write(71);  System.out.println('using read() : ' + (char)geek_input.read());  geek_output.write(69);  System.out.println('using read() : ' + (char)geek_input.read());  geek_output.write(75);  System.out.println('using read() : ' + (char)geek_input.read());  }  catch (IOException except)  {  except.printStackTrace();  }  } } 

Izlaz:

using read() : G using read() : E using read() : K

read(byte[] buffer int offset int maxlen) : java.io.PipedInputStream.read(byte[] buffer int offset int maxlen) čita do maxlen bajtova podataka iz Piped Input Stream-a u polje međuspremnika. Metoda se blokira ako se dosegne kraj streama ili se izbaci iznimka. Sintaksa:

public int read(byte[] buffer int offset int maxlen)   Parameters :    buffer : the destination buffer into which the data is to be read offset : starting in the destination array - 'buffer'. maxlen : maximum length of array to be read   Return :    next 'maxlen' bytes of the data as an integer value return -1 is end of stream is reached   Exception :   ->   IOException :   if in case IO error occurs. ->   NullPointerException :   if buffer is null. ->   IndexOutOfBoundsException :   if offset is -ve or maxlen is -ve or maxlen > buffer.length - offset. 

primiti (int bajt): java.io.PipedInputStream.receive(int byte) prima bajt podataka. Ako nijedan unos nije dostupan, metoda se blokira. Sintaksa:

protected void receive(int byte)   Parameters :    byte : the bytes of the data received   Return :    void   Exception :   ->   IOException :   if in case IO error occurs or pipe is broken.

zatvori() : java.io.PipedInputStream.close() zatvara Piped Input Stream i oslobađa dodijeljene resurse. Sintaksa:

public void close()   Parameters :    --------------   Return :    void   Exception :   ->   IOException :   if in case IO error occurs.

povezivanje (izvor PipedOutputStream) : java.io.PipedInputStream.connect(izvor PipedOutputStream) povezuje Piped Input Stream s 'source' Piped Output Streamom i u slučaju da je 'source' cijevi s nekim drugim tokom IO iznimka Sintaksa:

public void connect(PipedOutputStream source)   Parameters :    source : the Piped Output Stream to be connected to   Return :    void   Exception :   ->   IOException :   if in case IO error occurs.

dostupno() : java.io.PipedInputStream.available() vraća br. bajtova koji se mogu pročitati iz ulaznog toka, a da se zapravo ne blokiraju. Sintaksa:

public int available()   Parameters :    -------------   Return :    no. of bytes that can be read from Input Stream without actually being blocked. 0 if the stream is already closed but by invoking close() method   Exception :   ->   IOException :   if in case IO error occurs.

Java program koji objašnjava rad metoda klase PipedInputStream: Java

// Java program illustrating the working of PipedInputStream // connect() read(byte[] buffer int offset int maxlen) // close() available() import java.io.*; public class NewClass {  public static void main(String[] args) throws IOException  {  PipedInputStream geek_input = new PipedInputStream();  PipedOutputStream geek_output = new PipedOutputStream();  try  {  // Use of connect() : connecting geek_input with geek_output  geek_input.connect(geek_output);  geek_output.write(71);  geek_output.write(69);  geek_output.write(69);  geek_output.write(75);  geek_output.write(83);  // Use of available() :  System.out.println('Use of available() : ' + geek_input.available());  // Use of read(byte[] buffer int offset int maxlen) :  byte[] buffer = new byte[5];  // destination 'buffer'  geek_input.read(buffer 0 5);  String str = new String(buffer);  System.out.println('Using read(buffer offset maxlen) : ' + str);  // USe of close() method :  System.out.println('Closing the stream');  geek_input.close();  }  catch (IOException except)  {  except.printStackTrace();  }  } } 

Izlaz:

Use of available() : 5 Using read(buffer offset maxlen) : GEEKS Closing the stream

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