AWT/Swing中TextArea/JTextArea使用setCaretPosition方法
public void setCaretPosition(int position)
The caret position is constrained to be between 0 and the last character of the text, inclusive.
JavaFX中：
TextArea ta = new TextArea();
ta.setText("1234567890");
ta.positionCaret(4);
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024