JTextField : How to set text on the left of JTextField when text too long

问题

I have a long String that I want to display in a JTextField. If the String is too long, it is showing the right-portion of the String, rather than the left portion, even when I use setHorizontalAlignment(JTextField.LEFT)

For example, if my String is "JTextField example , this text is too long", it should show as...

|----------------------|
| JTextField example ..|
|----------------------|

but instead it shows as...

|----------------------|
| this text is too long|
|----------------------|

Could someone please suggest how this can be fixed.

回答1:

the horizontalAlignement works fine when the size of the field is bigger than the number of chars of the string, but if it is smaller it only does the LEFT_ALIGNMENT with the setText of its creation, not with any later setText.

You could force the position of the caret to the begining of the text using:

myTextField.setCaretPosition(0);

来源：https://stackoverflow.com/questions/10309235/jtextfield-how-to-set-text-on-the-left-of-jtextfield-when-text-too-long