This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

Name

createReader()

Examples
void setup() {
  size(100, 100);
  parseFile();
}

void parseFile() {
  // Open the file from the createWriter() example
  BufferedReader reader = createReader("positions.txt");
  String line = null;
  try {
    while ((line = reader.readLine()) != null) {
      String[] pieces = split(line, TAB);
      int x = int(pieces[0]);
      int y = int(pieces[1]);
      point(x, y);
    }
    reader.close();
  } catch (IOException e) {
    e.printStackTrace();
  }
} 
Description Creates a BufferedReader object that can be used to read files line-by-line as individual String objects. This is the complement to the createWriter() function. For more information about the BufferedReader class and its methods like readLine() and close used in the above example, please consult a Java reference.

Starting with Processing release 0134, all files loaded and saved by the Processing API use UTF-8 encoding. In previous releases, the default encoding for your platform was used, which causes problems when files are moved to other platforms.
Syntax
createReader(filename)
Parameters
filename String: name of the file to be opened
ReturnsBufferedReader
RelatedcreateWriter()
Updated on October 2, 2018 05:02:07pm EDT

Creative Commons License