Examples of java.io.ObjectInputStream

java.io.ObjectInputStream
An ObjectInputStream can be used to load Java objects from a stream where the objects were saved using an ObjectOutputStream. Primitive data (ints, bytes, chars, etc) can also be loaded if the data was saved as primitive types as well. It is invalid to attempt to read an object as primitive data. @see ObjectOutputStream @see ObjectInput @see Serializable @see Externalizable

        return ObjectUtils.<T> readObject(new FastByteArrayInputStream(obj), cl);
    }


    public static <T> T readObjectQuietly(final InputStream is) {
        try {
            final ObjectInputStream ois = new ObjectInputStream(is);
            return (T) ois.readObject();
        } catch (IOException ioe) {
            IOUtils.closeQuietly(is);
            throw new IllegalStateException(ioe);
        } catch (ClassNotFoundException ce) {
            IOUtils.closeQuietly(is);

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        }
    }


    public static <T> T readObjectQuietly(final InputStream is, final ClassLoader cl) {
        try {
            final ObjectInputStream ois = new CustomObjectInputStream(is, cl);
            return (T) ois.readObject();
        } catch (IOException ioe) {
            IOUtils.closeQuietly(is);
            throw new IllegalStateException(ioe);
        } catch (ClassNotFoundException ce) {
            IOUtils.closeQuietly(is);

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            throw new IllegalStateException(ce);
        }
    }


    public static <T> T readObject(final InputStream is) throws IOException, ClassNotFoundException {
        final ObjectInputStream ois = new ObjectInputStream(is);
        return (T) ois.readObject();
    }

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        return (T) ois.readObject();
    }


    public static <T> T readObject(final InputStream is, final ClassLoader cl) throws IOException,
            ClassNotFoundException {
        final ObjectInputStream ois = new CustomObjectInputStream(is, cl);
        return (T) ois.readObject();
    }

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        ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(saved));
        out.writeObject(xv);
        out.close();
        
        // now read back the object from serilized state
        ObjectInputStream in = new ObjectInputStream(new FileInputStream(saved));
        XMLType read = (XMLType)in.readObject();
                
        // make sure we have kept the reference stream id
        assertEquals(key, read.getReferenceStreamId());
        
        // and lost the original object

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  private Throwable readFromByteArray(byte[] contents) {
    // only for top level we would have the contents as not null.
    if (contents != null) {
      ByteArrayInputStream bais = new ByteArrayInputStream(contents);
      try {
        ObjectInputStream ois = new ObjectInputStreamWithClassloader(bais, ExceptionHolder.class.getClassLoader());
        return (Throwable)ois.readObject();
      } catch (Exception e) {
        // 
      }
    }
    return null;

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    Table t = tm.getGroupID("Northwind.Northwind.dbo.Employees");
    assertFalse(t.isVirtual());
  }
  
  @Test public void test71Schema() throws Exception {
    ObjectInputStream ois = new ObjectInputStream(new FileInputStream(UnitTestUtil.getTestDataFile("schema.ser")));
    Schema schema = (Schema) ois.readObject();
    assertNotNull(schema.getFunctions());
  }

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   }


   public static Vector getAlertList(String requestUrl) throws IOException {


      Vector al = null;
      ObjectInputStream inFromServlet = null;
      try {


         URL studentDBservlet = new URL( requestUrl );
         URLConnection servletConnection = studentDBservlet.openConnection();
         servletConnection.setDoInput(true);
         servletConnection.setDoOutput(true);
         servletConnection.setUseCaches (false);
         servletConnection.setRequestProperty
             ("Content-Type", "application/octet-stream");
         inFromServlet = new ObjectInputStream(servletConnection.getInputStream());
         al = (Vector) inFromServlet.readObject();
      }
      catch (ClassNotFoundException e) {


         e.printStackTrace();
      }
      finally {


         if (inFromServlet != null) {


            inFromServlet.close();
         }
      }
      return al;
   }

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            run()
          {
                while ( true ){
                  
                  Socket socket      = null;
                  ObjectInputStream  ois  = null;
                  
                  try{
                    socket = server_socket.accept();
                    
                    String address = socket.getInetAddress().getHostAddress();
                    
                    if ( !( address.equals("localhost") || address.equals("127.0.0.1"))){
                      
                      socket.close();
                      
                      continue;
                    }
                    
                    ois = new ObjectInputStream( socket.getInputStream());
                    
                    ois.readInt();  // version
                    
                    String  header = (String)ois.readObject();
                    
                    if ( !header.equals( getHeader())){
                      
                      log.messageLogged( 
                          LoggerChannel.LT_ERROR,
                          "SingleInstanceHandler: invalid header - " + header );
                      
                      continue;
                    }


                    String[]  args = (String[])ois.readObject();
                    
                    handler.processArguments( args );
                    
                  }catch( Throwable e ){
                    
                    log.messageLogged( "SingleInstanceHandler: receive error", e );


                  }finally{
                    
                    if ( ois != null ){
                      try{
                        ois.close();
                        
                      }catch( Throwable e ){
                      }
                    }

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        beans        = (Vector) v.get(XMLBeans.INDEX_BEANINSTANCES);
        connections  = (Vector) v.get(XMLBeans.INDEX_BEANCONNECTIONS);
        //connections  = new Vector();
      } /* binary */ else {
        InputStream is = new FileInputStream(oFile);
        ObjectInputStream ois = new ObjectInputStream(is);
        beans = (Vector) ois.readObject();
        connections = (Vector) ois.readObject();
        ois.close();
      }                


      integrateFlow(beans, connections, true, false);
      setEnvironment();
      if (newTab) {

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