Jul 21, 2021 · BTW - @Shocked (and any reader) - JOptionPane is able to display Swing components, so we can write JOptionPane.showMessageDialog(this, textArea); (assuming textArea is indeed a JTextArea {or some other Swing component} )

Jul 20, 2016 · You just retrieved the initial text of your nameField textfield, and your txt variable won't be updated automatically since there is no binding between that variable and the text property of the textfield, which is why you need to update the txt variable in the actionPerformed method, as the answers point out.

Jul 27, 2017 · Since Java 8 introduced lambda expressions, you can say essentially the same thing as #2 but use fewer characters: jBtnSelection.addActionListener(e -> selectionButtonPressed()); In this case, e is the ActionEvent.

May 21, 2019 · If you have an java.awt.Image, resizing it doesn't require any additional libraries. Just do: Image newImage = yourImage.getScaledInstance(newWidth, newHeight, Image.SCALE_DEFAULT);

Here's how I do it (with a little more info on how to load an image): import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.logging.Level; import java.util.logging.Logger; import javax.imageio.ImageIO; import javax.swing.JPanel; public class ImagePanel extends JPanel{ private BufferedImage image; …

Not sure but it occurs when I extends of swing JComponent only, if it is removed works fine like a normal autowired class. I've tried to pass JVM argument -Djava.awt.headless=true, but didn't work. – Dapaldo

Mar 1, 2014 · Even without importing swing, you can get the call in one, all be it long, string. Otherwise just use the swing import and simple call: JOptionPane.showMessageDialog(null, "Thank you for using Java", "Yay, java", JOptionPane.PLAIN_MESSAGE); Easy enough.

Mar 6, 2023 · getContentPane().setBackground(new java.awt.Color(204, 166, 166)); That is an example RGB color, you can replace that with your desired color. If you dont know the codes of RGB colors, please search on internet... there are a …

Jul 1, 2013 · I have made this calculator program in Java. This works well only when two numbers are calculated at one time. That means to get the sum of 1+2+3 you have to go this way : press 1 press + press 2 p...

Feb 23, 2014 · I'm trying to get a Java 2D graphics "hello world" going, and am finding it strangely difficult (ie, I'm Googling variations of "java hello world example" and coming up empty). Can anyone help me with a minimal hellow world example? Edit. This is a good starting point though, "The Java Tutorials: Performing Custom Painting".