JLabel label = new JLabel("Hello World!"); Dimension size = label.getPreferredSize(); System.out.println("Preferred size: " + size);
JLabel label = new JLabel("Hello World!"); Dimension size = new Dimension(200, 50); label.setPreferredSize(size);In this example, we create a JLabel object with the text "Hello World!" and then create a new Dimension object with a width of 200 and a height of 50. Finally, we call the setPreferredSize method to set the preferred size of the label to the newly created dimension. Package library: javax.swing