Java by API/javax.swing.text/Caret

Caret: setBlinkRate(int rate)

  

import javax.swing.JTextArea;
import javax.swing.text.JTextComponent;
public class Main {
  public static void main(String[] argv) {
    JTextComponent c = new JTextArea();
    // Set rate to blink once a second
    c.getCaret().setBlinkRate(1000);
    // Set the caret to stop blinking
    c.getCaret().setBlinkRate(0);
  }
}