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学习是最好的投资！
UseJTextField的setCaretPosition方法，可以设置光标的位置。在设置完JTextField的 text 之后，调用setCaretPosition(0)to move the cursor to the front to get the effect you need.
JTextField
setCaretPosition
setCaretPosition(0)
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Use
JTextField的setCaretPosition方法，可以设置光标的位置。在设置完
JTextField的 text 之后，调用setCaretPosition(0)to move the cursor to the front to get the effect you need.