jframe | 易学教程

Setting minimum size limit for a window in java swing

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问题 I have a JFrame which has 3 JPanels in GridBagLayout .. Now, when I minimize a windows, after a certain limit, the third JPanel tends to disappear. I tried setting minimizing size of JFrame using setMinimumSize(new Dimension(int,int)) but no success. The windows can still be minimized. So, I actually want to make a threshhold, that my window cannot be minimized after a certain limit. How can I do so? Code:- import java.awt.Dimension; import javax.swing.JFrame; public class JFrameExample {

Open a new JFrame

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问题 I have a main JFrame that has all kinds of panels in it for different functions and people can calculate things in them. I want to open a new JFrame when the user hits the first calculate button and serve as a Output window (Simlar to SPSS output windows if you are familiar with them). The New JFrame will be completely separate and will have its own menu bar ... A simple JDialog is not the way to go here. 回答1: can't resist, simple disagree with answers JFrame frame = new JFrame( ); and frame

How do I remove the maximize and minimize buttons from a JFrame?

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问题 I need to remove the maximize and minimize buttons from a JFrame. Please suggest how to do this. 回答1: import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; public class Dlg extends JDialog { public Dlg(JFrame frame, String str) { super(frame, str); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent evt) { System.exit(0); } }); } public

Background image in a JFrame

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问题 This question has been asked a lot but everywhere the answers fall short. I can get a JFrame to display a background image just fine by extending JPanel and overriding paintComponent, like so: class BackgroundPanel extends JPanel { private ImageIcon imageIcon; public BackgroundPanel() { this.imageIcon = Icons.getIcon("foo"); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); g.drawImage(imageIcon.getImage(), 0,0,imageIcon.getIconWidth(),imageIcon.getIconHeight()

Drag and Resize undecorated JFrame

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问题 Currently, I am using the following code to drag and move my undecordated JFrames. private void initialiseGUI(Component component){ //<editor-fold defaultstate="collapsed" desc="code"> component.addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent e) { posX = e.getX(); posY = e.getY(); } }); component.addMouseMotionListener(new MouseAdapter() { public void mouseDragged(MouseEvent evt) { //sets frame position when mouse dragged Rectangle rectangle = getBounds(); getGUI()

How to remove title bar in JFrame

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问题 I'm using the following code for practising, http://docs.oracle.com/javase/tutorial/uiswing/examples/layout/BorderLayoutDemoProject/src/layout/BorderLayoutDemo.java I also add frame.setSize(frame.getMaximumSize()); in createAndShowGUI() method, What is more I want this window not to have the title bar, close and minimize buttons. I tried the following code, frame.setUndecorated(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); If I added this code before the pack(), it goes into

贪吃蛇系列之二——游戏窗口的建立

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 下面，我们废话不多说，就开始我们的贪吃蛇小项目。首先，我们打开我们的Eclipse，孤狼用的呢是比较新的版本，Eclipse 4.2.0的，没有Eclipse工具的朋友呢，可以到Eclipse的官方网站 http://www.eclipse.org/platform 进行下载。在接下来的博文中，孤狼将分多个版本来逐步的完善我们的贪吃蛇游戏。我们建立一个新的Java项目，Snake01，在这个版本中，我们将先将游戏的窗口创建出来，那么下面，我们就开始Coding吧。最为一名好的程序员，我们最好再一开始就养成比较好的编程习惯，学会建包就是一个好的开始。首先，我们创建游戏的主窗口类GameView类，并将这个类放在com.gulang.snake.view下面，如下图：接下来，我们开始对GameView进行编码，大家直接看代码，我会在后面进行解释： package com.gulang.snake.view; import java.awt.Color; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JFrame; public class GameView extends

I am new to programming need guidance [closed]

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问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 days ago . I am trying to create a Jbutton and which can call my program once i click on to that button. but no luck i am pretty sure i am doing something wrong can someone help. so i have made a class demoapp. java and i want to call that using jbutton. I tried activelistener concept no help. This what i want

I am new to programming need guidance [closed]

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I am new to programming need guidance [closed]

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