Razred Java.io.PipedInputStream v Javi

Cevi v IO zagotavljajo povezavo med dvema nitima, ki se hkrati izvajata v JVM. Tako se cevi uporabljajo kot vir ali cilj.  

• PipedInputStream je prav tako povezan s PipedOutputStream. Podatke je torej mogoče zapisati s PipedOutputStream in PipedInputStream. Toda uporaba obeh niti hkrati povzroči zastoj za niti.
• PipedOutputStream pošilja konec cevi. Podatki se zapišejo v PipedOutputStream. Cev naj bi bila prekinjena, če PipedInputStream, ki je bral podatke, ni več.

Izjava:   

 public class PipedOutputStream   
  extends OutputStream   
 
    Konstruktor:        
  
 
    PipedOutputStream() :    ustvari PipedOutputStream, ki ni povezan.  
 
    PipedOutputStream(PipedOutputStream inStream) :    ustvari PipedOutputStream, ki ga    
 je povezan s PipedInputStream - 'inStream'.  
 
 
    Metode:     
  
    write() : java.io.PipedOutputStream.write(int byte)    zapiše določen bajt v cevni izhodni tok.   
  
    Sintaksa:     
  
    public void write(int byte)     
  
    Parameters :      
 byte : byte to be written   
  
    Return :     void   
    Exception :     
 ->      IOException :     if in case IO error occurs.  
    write(byte[] buffer int offset int maxlen) : java.io.PipedOutputStream.write(byte[] buffer int offset int maxlen)    zapiše maxlen bajtov podatkov iz medpomnilnika v cevni izhodni tok. Metoda se blokira, če v tok ni zapisan noben bajt.   
  
    Sintaksa:     
  
    public void write(byte[] buffer int offset int maxlen)     
  
    Parameters :      
 buffer : data of the buffer   
 offset : starting in the destination array - 'buffer'.   
 maxlen : maximum length of array to be read   
  
    Return :     void   
    Exception :     
 ->      IOException :     if in case IO error occurs.  Java   
   // Java program illustrating the working of PipedInputStream   // write(byte[] buffer int offset int maxlen)   import     java.io.*  ;   public     class   NewClass   {      public     static     void     main  (  String  []     args  )     throws     IOException      {      PipedInputStream     geek_input     =     new     PipedInputStream  ();      PipedOutputStream     geek_output     =     new     PipedOutputStream  ();      // Use of connect() : connecting geek_input with geek_output      geek_input  .  connect  (  geek_output  );      byte  []     buffer     =     {  'J'       'A'       'V'       'A'  };      // Use of write(byte[] buffer int offset int maxlen)      geek_output  .  write  (  buffer       0       4  );      int     a     =     5  ;      System  .  out  .  print  (  'Use of write(buffer offset maxlen) : '  );      while  (  a  >  0  )      {      System  .  out  .  print  (  ' '     +     (  char  )     geek_input  .  read  ());      a  --  ;      }      }   }   
   
    Izhod:     
  
 Use of write(buffer offset maxlen) : J A V A   
 
 
    close() : java.io.PipedOutputStream.close()    zapre cevovodni izhodni tok in sprosti dodeljena sredstva.    
    Sintaksa:     
 
 
 public void close()   
    Parameters :      
 --------------   
    Return :         
 void   
    Exception :     
 ->      IOException :     if in case IO error occurs.   
 
 
    povezava (destinacija PipedInputStream) : java.io.PipedOutputStream.connect (destinacija PipedInputStream    poveže cevovodni izhodni tok z 'ciljnim' cevovodnim vhodnim tokom in v primeru, da so 'cilj' cevi z nekim drugim tokom, se vrže izjema IO    
    Sintaksa:     
 
 
 public void connect(PipedInputStream destination)   
    Parameters :      
 destination : the Piped Input Stream to be connected to   
    Return :         
 void   
    Exception :     
 ->      IOException :     if in case IO error occurs.   
 
 
    flush(): java.io.PipedOutputStream.flush()    splakne izhodni tok.    
    Sintaksa:     
 
 
 public void flush()   
    Parameters :      
 ------------   
    Return :         
 void   
    Exception :     
 ->      IOException :     if in case IO error occurs.   
 
    Koda Java, ki ponazarja delovanje metod razreda PipedOutputStream:     
 Java   
   // Java program illustrating the working of PipedInputStream   // write() write(byte[] buffer int offset int maxlen)   // close() flush() connect()   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 write(int byte) :      geek_output  .  write  (  71  );      geek_output  .  write  (  69  );      geek_output  .  write  (  69  );      geek_output  .  write  (  75  );      geek_output  .  write  (  83  );      // Use of flush() method :      geek_output  .  flush  ();      System  .  out  .  println  (  'Use of flush() method : '  );      int     i     =     5  ;      while  (  i     >     0  )      {      System  .  out  .  print  (  ' '     +     (  char  )     geek_input  .  read  ());      i  --  ;      }      // USe of close() method :      System  .  out  .  println  (  'nClosing the Output stream'  );      geek_output  .  close  ();      }      catch     (  IOException     except  )      {      except  .  printStackTrace  ();      }      }   }   
   
    Izhod:     
  
 Use of flush() method :    
  G E E K S   
 Closing the Output stream   
  
     
    
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