如何向 jtextfield 添加填充

Question

How can I add some padding to a jtextfield? I've tried tf.setMargin(new Insets(5,5,5,5)); which doesn't have any effect.

Answer 1

The problem you are having is that the UI is setting its own border on the text field, overriding the margin you set. You can see a warning to this effect in the javadoc of setMargin() .

The solution is to let the UI set a border, then squeeze in another border of your own:

field.setBorder(BorderFactory.createCompoundBorder(
        field.getBorder(), 
        BorderFactory.createEmptyBorder(5, 5, 5, 5)));

Answer 2

你看看CompoundBorder ，在那里你可以设置LineBorder(Color.gray, 1)并使用

EmptyBorder(5, 5, 5, 5)

Answer 3

最简单的方法是使用BorderFactory

field.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

Answer 4

I know this is years too late, but actually, if you want a consistent look and feel in Java, you should be editing the UI so every text field you create doesn't need its own special code. So, taking from Russel Zahniser's example above:

Border tfBorder = UIManager.getBorder("TextField.border");
Border newBorder = BorderFactory.createCompoundBorder(tfBorder, 
        BorderFactory.createEmptyBorder(5, 5, 5, 5)));

UIManager.setBorder("TextField.border", newBorder);

Answer 5

yourTextFeildVariable.setBorder(BorderFactory.createCompoundBorder(yourTextFeildVariable.getBorder(), BorderFactory.createEmptyBorder(0, 5, 0, 0)));

This is working 100%

Answer 6

您可以将此应用于已创建的带有边框的文本框

jTextField1.setBorder(BorderFactory.createCompoundBorder(jTextField1.getBorder(), BorderFactory.createEmptyBorder(6, 6, 6, 6)));