CustomOutputStream.java

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package icons;

import java.io.IOException;
import java.io.OutputStream;
import javax.swing.JTextArea;

public class CustomOutputStream extends OutputStream {

  private JTextArea textArea;

  public CustomOutputStream(JTextArea textArea) {
    this.textArea = textArea;
  }

  @Override
  public void write(int b) throws IOException {
    // redirects data to the text area
    textArea.append(String.valueOf((char) b));
    // scrolls the text area to the end of data
    textArea.setCaretPosition(textArea.getDocument().getLength());
  }
}