gridbaglayout

问题 In this code I have a panel in the GridBagLayout which contains a JLabel and a JTextField . import java.awt.*; import javax.swing.*; public class Simple { JFrame simpleWindow = new JFrame("Simple MCVE"); JPanel simplePanel = new JPanel(); JLabel lblSimple; JTextField txtSimple; public void numberConvertGUI() { simpleWindow.setBounds(10, 10, 420, 80); simpleWindow.setMinimumSize(new Dimension(420, 80)); simpleWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); simpleWindow.setLayout(new

问题 I'm trying to use the GridBagLayout layout manager to achieve this: However, what I am currently getting is this: The problem being that the orange and brown/gray panels are supposed to occupy the second column, but seem to only want to occupy the third when it comes to running the code. The code that I'm using for the layout: Container contentPane = form.getContentPane(); contentPane.setLayout(new GridBagLayout()); GridBagConstraints c = new GridBagConstraints(); JPanel pnlGame = new JPanel(

问题 This question is related to my previous question How to generate Cartesian Coordinate (x,y) from GridBaglayout? I have successfully get the coordinate of each pictures, however when I checked the coordinate through (System.out.println) and the placement of the images on the screen, it seems to be wrong. e.g. if on the screen it was obvious that the x point of the first picture is on cell 2 which is on coordinate of 20, but the program shows x=1. Here is part of the code: public Grid (){

问题 Solved using box layout in the panels that have 1 column and many rows. 回答1: I suggest you use a Table instead of working with single labels and GridBagLayout. It might be possible to use Colspan, too, see: Jtable Row Span and Column Span If its just a View (No Buttons, etc.), you could also consider to use a JEditorPane and render your View with HTML, that might be the easiest way. 来源： https://stackoverflow.com/questions/32973167/gridbaglayout-formatting

问题 import java.awt.*; import java.awt.event.*; import java.util.*; import javax.swing.*; public class GridBagLayoutDemo extends JFrame { private JFrame frame; private JPanel panel; private JLabel l1,l2,l3,l4,l5,l6,l7,l8; private JRadioButton r1,r2,r3,r4,r5,r6,r7,r8; private JTextField t1,t2,t3,t4; private JComboBox c1; GridBagConstraints gbc; GridBagLayout gbl; public static void main(String[] args) { new GridBagLayoutDemo(); } public GridBagLayoutDemo() { frame=new JFrame(); panel=new JPanel();

问题 This question already has answers here : How can I change the width of a JComboBox dropdown list? (6 answers) Closed 5 years ago . How can I set a fixed width of a JComboboxs popup-menu that is using GridBagLayout and fill=HORIZONTAL ? One of the things I tried is to just override the getSize() method but dose not work. public class ComboBoxSize extends JFrame { public static void main(String args[]) { // THE COMBOBOX String labels[] = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" };

问题 I have severall question and excuse my denglish! Problems: My actionPerformed in my controller dont react and I dont know how to use the update(model,object) method in the View. The next problem is my GridBag. It looks chaotic although the code is orientated on the oracle example. No the Last one. in the view line 41 i get a NPE as a result of a class initialised in the Model. dont no why. I allready testes if the Class is constructed and yes it is. The Programm should greate a JuliaSet.

问题 I am having troubles adding an actionlistener to my JTextField. I need to get the text entered from the user into a string so i can work with it. Can anyone tell me what im doing wrong or how i should do it. Here is the code: public void actionPerformed(ActionEvent e) { //Execute when button is pressed JFrame frame = new JFrame("Value Bet"); frame.setVisible(true); frame.setSize(500,300); GridBagLayout layout = new GridBagLayout(); frame.setLayout(layout); GridBagConstraints c = new

问题 I'm trying to make a gridbaglayout, to simply have the label atop the textbox atop the textview in a vertical window, but I'm getting the exception Exception in thread "main" java.lang.IllegalArgumentException: cannot add to layout: constraints must be a GridBagConstraint at java.awt.GridBagLayout.addLayoutComponent(GridBagLayout.java:685) at java.awt.Container.addImpl(Container.java:1072) at java.awt.Container.add(Container.java:957) at javax.swing.JFrame.addImpl(JFrame.java:540) at java.awt

问题 I have several methods which create their own component, JButton or JLabel in a JPanel . Then I have a separate method which adds all these JPanels the the JFrame . I also use gridx and gridy on the JPanels to position them how I want. This is: lookreply on the left, then top right the title and below in a 2X2 table quit, restart, pickup and hello. However my current code when run displays a weird, random layout. The lookreply is on the left, but then to the right is quit, a space, restart