preferredsize

I decided to write a small Java program to experiment around with BorderLayout, because I'm developing a Java game and I need to have 2 objects placed in a single JFrame at the same time, and everyone I asked said I need BorderLayout to do that. So the Java program I wrote is supposed to place a JButton on the JFrame and ALSO place a graphic component (a rectangle in this case). The problem is, only the button shows up, as can be seen in the image link below: http://prntscr.com/3m5ek6 I can't post actual images due to my low reputation statistic. Here is the code: main.java --> The main method

While writing this question I have been able to find a way to get it to behave the way I wanted. Based on this , I am still posting the question as other people might face similar issues. I have the following issues with the sizing of a JTabbedPane used for content that stretches horizontally but has a fixed height. Both options for setTabLayoutPolicy() seem to alter the height of the content and won’t consistently display it at its preferred or minimum height. With the default WRAP_TAB_LAYOUT , the preferred size of the tab pane does not take into account whether the tabs are actually stacked

I created a JPanel and i modify it a bit. I change it's background to gradient color here is the class. public class JGradientPanel extends JPanel { private static final int N = 32; private Color color1, color2; public JGradientPanel(Color color1, Color color2) { this.setBorder(BorderFactory.createEmptyBorder(N, N, N, N)); this.color1 = color1; this.color2 = color2; } @Override public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; //Color color1 = getBackground(); //Color color2 = color1.darker(); int w = getWidth(); int h = getHeight();

I have a JTable built using DefaultModel which is displayed in JPane but I would like to re-size the table to make it bigger. Could any one please explain how I could do that? I have tried the following code: TableColumnModel colsize = t1.getColumnModel(); for(int i=0; i<cols; i++){ colsize.getColumn(i).setPreferredWidth(200); } but it did not work. To size up the table#setPreferredSize(). table.setPreferredSize(new Dimension(500, 500)); To size up the columns table#getColumn(). table.getColumn(columnNames[0]).setPreferredWidth(100); table.getColumn(columnNames[1]).setPreferredWidth(400); I

I intended to make a JFrame with a ContentPanel of 600x600 and I wanted the JFrame to be not re-sizable. Inside this box, I Drew a 600x600 red-outlined rectangle to make sure that everything matched when i ran the program. Before restricting resizing for the JFrame, I set the size of my JFrame by doing: getContentPane().setPreferredSize( new Dimension(600,600)); pack(); And when I launched the program and the boundaries of my rectangle fit perfectly with the dimensions of the JFrame. However, when i added isResizable(false) into the equation, there seemed to be buffer of pixels between the