JButton在JTextField之前得到了关注

Question

As you can see, the passwordField is positioned before jButton1 in the navigator, however, when the usernameField is focused, and I press the TAB key, the second element being focused is the jButton1 and not the passwordField .

What really controls the order of focus?

Answer 1

The phrase you need search for is "tab order": there is an answer to this here . Briefly, you will need to implement a FocusTraversalPolicy subclass, and make your container use it by calling setFocusTraversalPolicy .

Answer 2

The default focus transferral is based more on the visual layout the the order of the components. In this case it would want to go left to right, top to bottom. This is the expected behaviour – MadProgrammer just now edit

Take a look at How to use the Focus Subsystem , especially, Customizing Focus Traversal

Updated

Take a look at switching JTextFields by pressing Enter key , which demonstrates the use of a custom focus policy

Answer 3

尝试搜索选项卡索引或选项卡顺序以设置组件