Java: pipe OutputStream to InputStream

• Method 1: use ByteArrayInputStream & ByteArrayOutputStream:

  
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
  
      // write
      writeDataToOutputStream(baos);
      
      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
      
      // read
      readDataFromInputStream(bais);
  
  

• Method 2: use PipedInputStream & PipedOutputStream:

  
      PipedInputStream pis = new PipedInputStream();
      PipedOutputStream pos = new PipedOutputStream(pis);
      // write
      writeDataToOutputStream(pos);
  
      // read
      readDataFromInputStream(pis);
  
  

See Also

• Convert a Java Writer to a Reader
• Convert Java OutputStream to InputStream