Should I completely avoid the use of those methods? Yes for application code. The methods have been defined for a reason. So when should I use them? In which context? For what purposes? I don’t know, personally I think of it as an API design accident. Slightly forced by compound components having special ideas about … Read more
You’re mixing heavy weight (AWT) components with light weight (Swing) components, this is inadvisable as they don’t tend to play well together. JScrollPane contains a JViewPort onto which you can add a child component, AKA the view. (image from the JavaDocs) So the call jScrollPane.getViewport().setLayout(new FlowLayout(FlowLayout.CENTER)); is actually setting the JViewPort‘s layout manager, which really … Read more
A big difference is how the value can change over time, and so the one you choose should be dependent on what you’re wanting to do with the code. If you simply call setPreferredSize(new Dimension(500, 500)); in your code, it will do as you expect – it sets the preferred size to 500×500. However, other … Read more
A common strategy to solve complex computing tasks, is to break them into small, well defined manageable tasks. Divide and conquer. This also applies to gui: break the design into small, easy to layout containers. In this case, for example start by dividing the design into 3 areas: Each such area is implemented by a … Read more
You should use: label1.setHorizontalTextPosition(SwingConstants.LEFT); (Set the position of the text, relative to the icon)
Is there a better way? Layout managers, layout managers, layout managers. If the default provided layout managers aren’t doing what you want, either use a combination of layout managers or maybe try some of the freely available layout managers, like MigLayout (and use them in combination with other layout managers as required) With your code… … Read more
Set GridBagLayout for JPanel, put JLabel without any GridBagConstraints to the JPanel, JLabel will be centered example import java.awt.*; import javax.swing.*; public class CenteredJLabel { private JFrame frame = new JFrame(“Test”); private JPanel panel = new JPanel(); private JLabel label = new JLabel(“CenteredJLabel”); public CenteredJLabel() { panel.setLayout(new GridBagLayout()); panel.add(label); panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10)); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.add(panel); … Read more
from the docs for setReverseLayout Used to reverse item traversal and layout order. This behaves similar to the layout change for RTL views. When set to true, first item is laid out at the end of the UI, second item is laid out before it etc. For horizontal layouts, it depends on the layout direction. … Read more
There are multiple problems with absolute positioning: Different screen sizes and resolutions, what looks great on your machine would come out differently on another screen with a different resolution. In the same vein, what happens when a user resizes the screen because they want to run your application side by side with some other application … Read more
Don’t use setBounds() to set the size and location of a component. Let the layout manager do its job. That is if fact what is happening. A JPanel uses a FlowLayout, so the components are being positioned based on the rules of the FlowLayout. You can change the FlowLayout to align components to the left … Read more