如何将JLabel定位到Java GUI上的绝对位置

Question

I have many JLabel s (which includes ImageIcon s) in a JPanel .

And this JPanel is only a panel on the GUI; there are lots of other panels.

I want to place labels to the exact pixel coordinates on their JPanel container.

How can I do that without using GroupLayout ?

Answer 1

See Doing Without a Layout Manager (Absolute Positioning) in the Java tutorials.

Creating a container without a layout manager involves the following steps.

1. Set the container's layout manager to null by calling setLayout(null) .
2. Call the Component class's setbounds method for each of the container's children.
3. Call the Component class's repaint method.

Answer 2

Either

• set a custom LayoutManager ( Container.setLayout ) on the panel that sets the exact positions you want or
• set a null layout manager ( myPanel.setLayout(null); ) and set component positions externally ( Component.setBounds ).

Answer 3

Take a look at MigLayout, which allows you to do absolute positioning, it's not part of the JDK, but a seperate download .

It's very good as far as layout managers go and does absolute positioning, plus a whole load of other things.