Examples of java.io.BufferedReader

java.io.BufferedReader
BufferedReader is a buffered character input reader. Buffering allows reading from character streams more efficiently. If the default size of the buffer is not practical, another size may be specified. Reading a character from a Reader class usually involves reading a character from its Stream or subsequent Reader. It is advisable to wrap a BufferedReader around those Readers whose read operations may have high latency. For example, the following code
```
 BufferedReader inReader = new BufferedReader(new FileReader("file.java")); 
```
will buffer input for the file file.java. @see BufferedWriter @since 1.1

        // cannot fail except if the FileReader/FileWriter fails.
        // Otherwise we have an open file until the reader/writer
        // get garbage collected.
        try{
           if (file.exists()) {
               readerWriter = new BufferedReader(new FileReader(file));
           } else {
               readerWriter = new PrintWriter(new FileWriter(file));
           }
           return true;
       } catch (IOException e) {

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        if (lastLine!=null) {
            String line = lastLine;
            lastLine = null;
            return line;
        }
        BufferedReader reader = (BufferedReader) readerWriter;
        // Here lastLine is null, return a new line
        try {
          String line = reader.readLine();
          if (line == null) {
              atEOF = true;
              setError(new EOFException());
          }
          return line;

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            setError(new IllegalStateException("File not opened for read"));
            return true;
        }
        if (atEOF) return true;
        if (lastLine!=null) return false;
        BufferedReader reader = (BufferedReader) readerWriter;
        try {
          lastLine = reader.readLine();
          if (lastLine == null) atEOF = true;
          return atEOF;
        } catch (IOException e) {
          setError(e);
          return true;

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            setError(new IllegalArgumentException("Uninitialized File object"));
            return null;
        }
        try{ 
           if (file.exists()) {
               readerWriter = new BufferedReader(new FileReader(file));
           } else {
               setError(new IllegalStateException("File does not exist"));
               return null;
           }
           if(!file.isFile()) {
               setError(new IllegalStateException("File is not a regular file"));
               return null;
           }


           // read content line by line to setup properl eol
           StringBuffer buffer = new StringBuffer((int) (file.length()*1.10));
           BufferedReader reader = (BufferedReader) readerWriter;
           while (true) {
              String line = reader.readLine();
              if (line == null) {
                  break;
              }
              buffer.append(line);
              buffer.append("\n");  // EcmaScript EOL

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            usage();
        }
        log.debug("Type=" + type);
        
        Vector lines = new Vector();
        BufferedReader reader = null;
        String line = null;
        try {
            FTPFileFactory ff = new FTPFileFactory(parser);
            if (locale != null) {
                System.out.println("Setting locale to " + locale);
                Locale l = new Locale(locale);
                Locale[] locales = new Locale[2];
                locales[0] = l;
                locales[1] = Locale.ENGLISH;
                ff.setLocales(locales);
            }
            else {
                Locale[] locales = new Locale[1];
                locales[0] = Locale.ENGLISH;
                ff.setLocales(locales);
            }
            reader = new BufferedReader(new FileReader(filename));
            while ((line = reader.readLine()) != null) {
                lines.addElement(line);
                System.out.println(line);
            }
            String[] listings = new String[lines.size()];
            lines.copyInto(listings);

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    m_structure    = null;
    m_sourceFile   = null;
    m_File         = null;
    m_FirstCheck     = true;


    m_sourceReader = new BufferedReader(new InputStreamReader(input));
  }

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        return false;
    }


    private synchronized void readFile() {
        BufferedReader reader = null;


        users = new Properties();


        try {
            reader = new BufferedReader(new StringReader(resource.getContent()));


            String line = reader.readLine();


            while (line != null) {
                StringTokenizer st = new StringTokenizer(line, ":");


                if (st.countTokens() > 1) {
                    users.put(st.nextToken(), st.nextToken());
                }


                line = reader.readLine();
            }
        } catch (Exception ignore) {
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (Exception x) {
                }
            }


            lastRead = System.currentTimeMillis();

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                    .append(newLine);
            InputStream errorStream = m_connection.getErrorStream();
            if (m_interceptor != null) {
                errorStream = m_interceptor.intercept(errorStream);
            }
            BufferedReader in = new BufferedReader(new InputStreamReader(errorStream));
            String line;
            while ((line = in.readLine()) != null) {
                error.append(line).append(newLine);
            }
            return error.toString();
        }

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                    scriptEngine.eval(scriptSourceCode);
                } else if (o instanceof OMText) {


                    DataHandler dataHandler = (DataHandler) ((OMText) o).getDataHandler();
                    if (dataHandler != null) {
                        BufferedReader reader = null;
                        try {
                            reader = new BufferedReader(
                                    new InputStreamReader(dataHandler.getInputStream()));
                            scriptEngine.eval(reader);


                        } catch (IOException e) {
                            handleException("Error in reading script as a stream ", e, synCtx);
                        } finally {


                            if (reader != null) {
                                try {
                                    reader.close();
                                } catch (IOException e) {
                                    handleException("Error in closing input stream ", e, synCtx);
                                }
                            }


                        }
                    }
                }


            }
        }


        // load <include /> scripts; reload each script if needed
        for (Value includeKey : includes.keySet()) {


            String includeSourceCode = (String) includes.get(includeKey);


            String generatedKey = includeKey.evaluateValue(synCtx);


            Entry includeEntry = synCtx.getConfiguration().getEntryDefinition(generatedKey);
            boolean includeEntryNeedsReload = (includeEntry != null) && includeEntry.isDynamic()
                    && (!includeEntry.isCached() || includeEntry.isExpired());
            synchronized (resourceLock) {
                if (includeSourceCode == null || includeEntryNeedsReload) {
                    log.debug("Re-/Loading the include script with key " + includeKey);
                    Object o = synCtx.getEntry(generatedKey);
                    if (o instanceof OMElement) {
                        includeSourceCode = ((OMElement) (o)).getText();
                        scriptEngine.eval(includeSourceCode);
                    } else if (o instanceof String) {
                        includeSourceCode = (String) o;
                        scriptEngine.eval(includeSourceCode);
                    } else if (o instanceof OMText) {


                        DataHandler dataHandler = (DataHandler) ((OMText) o).getDataHandler();
                        if (dataHandler != null) {
                            BufferedReader reader = null;
                            try {
                                reader = new BufferedReader(
                                        new InputStreamReader(dataHandler.getInputStream()));
                                scriptEngine.eval(reader);


                            } catch (IOException e) {
                                handleException("Error in reading script as a stream ", e, synCtx);
                            } finally {


                                if (reader != null) {
                                    try {
                                        reader.close();
                                    } catch (IOException e) {
                                        handleException("Error in closing input" +
                                                " stream ", e, synCtx);
                                    }
                                }

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            if( aboutTextPath != null ) {
                // Add in the application descriptor data, if available
                dialogPanel.add(createApplicationDescriptorComponent(), BorderLayout.NORTH);
                try {
                    scroller = new HtmlScroller(false, 2000, 15, 10);
                    String text = FileCopyUtils.copyToString(new BufferedReader(new InputStreamReader(aboutTextPath
                            .getInputStream())));
                    scroller.setHtml(text);
                } catch( IOException e ) {
                    final IllegalStateException exp = new IllegalStateException("About text not accessible: "
                            + e.getMessage());

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