jpanel

问题 This question already has an answer here : How to create a Futoshiki GUI using JPanel in Java? (1 answer) Closed 24 days ago . I want to move my buttons for my GUI game which is a 9x9 grid so the buttons appear as the image below. I have tried hard but can not figure it out. The current issue I am having. What I want it to look like. public FutoshikiGUI() { grid = new JPanel(new GridLayout(0,9)); cells = new PanelCell[5+1][5+1]; for (int row=1; row<=5; row++) { for (int col=1; col<=5; col++)

问题 How do I display two JPanels in the 'North' in borderlayout? Here's and example code that outputs a GUI with three distinct rows, Top, Middle, Bottom. There's one button covering the first row, 3 buttons covering the second row, and one covering the bottom row. package borderLayoutDemo; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import java.awt.BorderLayout; public class BorderLayoutDemo { public static void main(String[] args) { JFrame

问题 How do I display two JPanels in the 'North' in borderlayout? Here's and example code that outputs a GUI with three distinct rows, Top, Middle, Bottom. There's one button covering the first row, 3 buttons covering the second row, and one covering the bottom row. package borderLayoutDemo; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import java.awt.BorderLayout; public class BorderLayoutDemo { public static void main(String[] args) { JFrame

问题 I wrote a simple java program to place some rectangles on the screen (after some delay between each other) package guitest2; import java.awt.Graphics; import javax.swing.JPanel; public class DrawPanel extends JPanel { public void paintComponent( Graphics g) { super.paintComponent(g); for (int i = 0; i < 10; i++ ) { g.drawRect(10+5*i, 10+5*i, 20, 20); try{ Thread.sleep( 2000 ); } catch (InterruptedException ex) { } } } } I used that class in package guitest2; import javax.swing.JFrame; public

问题 I have a JPanel inside a Jframe.I want to draw a line inside JPanel, using paint(Graphics g) method. But it is not working. Please Someone help me on this issue. Here is the code. Thank you all in advance. import java.awt.Color; import java.awt.Graphics; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.SwingUtilities; public class JavaGraph { JPanel myPanel; public JPanel createPanel() { myPanel=new JPanel(); myPanel.setLayout(null); //myPanel.setBackground(Color.black

问题 I'm tried to add a JPanel to a JScrollPane using: panel1 Panel1 = new panel1(); jScrollPane1.setViewportView(Panel1); and it worked. But the problem is scrollPane doesn't show scroll bars even the Panel1 is bigger. (I'm working with NetBeans & panel1 is a jpanel form) 回答1: Override, getPreferredSize() method for the said JScrollPane , you might be able to see the Scroll Bar. Or one can simply call setPreferredSize(), though as stated in the API Sets the preferred size of this component. If

问题 Does anyone have any good tutorials on how to fill a JList (within a JPanel ) with user inputted data. Specifically, I want to add people to a selected roster. Is this a matter of filling it with an ArrayList ? Any help would be much appreciated. 回答1: create a ListModel which wrapps your java.util.List (e.g. by extending AbstractListModel) configure JList to use this model create and configure a renderer to format/ display the Objects in your list as needed http://docs.oracle.com/javase

问题 Does anyone have any good tutorials on how to fill a JList (within a JPanel ) with user inputted data. Specifically, I want to add people to a selected roster. Is this a matter of filling it with an ArrayList ? Any help would be much appreciated. 回答1: create a ListModel which wrapps your java.util.List (e.g. by extending AbstractListModel) configure JList to use this model create and configure a renderer to format/ display the Objects in your list as needed http://docs.oracle.com/javase

问题 Does anyone have any good tutorials on how to fill a JList (within a JPanel ) with user inputted data. Specifically, I want to add people to a selected roster. Is this a matter of filling it with an ArrayList ? Any help would be much appreciated. 回答1: create a ListModel which wrapps your java.util.List (e.g. by extending AbstractListModel) configure JList to use this model create and configure a renderer to format/ display the Objects in your list as needed http://docs.oracle.com/javase

问题 i'm new here. Hope you will be able to help. Problem: Problem with displaying Animation on JFrame. Seems I miss/don't understand enough how Java's graphics works. Global idea: Lets say I want make a game/movie/clip. For this I need this (not)simple animation get working. An example for this question: I got class Screen, which has the screen stuff- Declaration of the JFrame, setting up its configuration(size, close operation, etc) and then creating the objects of class Box, to be showed on the