swing

问题 I am trying to make an animation with multiple thread. I want to paint n squares where this n comes from commend-line argument. Every square has their x-y coordinates, colors and speed. They are moving to the right of the frame with different speed, color and coordinates. Since I am using multi thread I assume I have to control each squares. So I have to store each square object in the ArrayList. However, I am having trouble with painting those squares. I can paint one square but when I try

问题 I have been trying to figure this out why not the next picture showing on the same panel after click the button. I want to separate those classes not into one class and used repaint() to re-invoke paintComponent() with the new pic. Please help me. I am almost dying :( when I run this, the first picture appears well. when the button is clicked to change the first picture to the second one, the Panel just keep on showing the first picture. Thank you. import java.awt.*; import java.awt.event

问题 I have been trying to figure this out why not the next picture showing on the same panel after click the button. I want to separate those classes not into one class and used repaint() to re-invoke paintComponent() with the new pic. Please help me. I am almost dying :( when I run this, the first picture appears well. when the button is clicked to change the first picture to the second one, the Panel just keep on showing the first picture. Thank you. import java.awt.*; import java.awt.event

问题 I come from an Objective-C background and I have been developing on the iOS and Mac OS platform for a number of years now. I love the concept of custom drawing and therefore I would like to replicate what had been done by me on the aforementioned platform. In iOS I would call -drawRect() to draw a custom view and then, I could go ahead and add other visual components on top of that drawing. I know that there are equivalents in java swing and awt called paint() and paintComponent() . However,

问题 I come from an Objective-C background and I have been developing on the iOS and Mac OS platform for a number of years now. I love the concept of custom drawing and therefore I would like to replicate what had been done by me on the aforementioned platform. In iOS I would call -drawRect() to draw a custom view and then, I could go ahead and add other visual components on top of that drawing. I know that there are equivalents in java swing and awt called paint() and paintComponent() . However,

问题 In my program I try to paint on a JPanel when the mouse is pressed. The mousePressed method is just to test the painting from another class. Later on the spawn method will be called by other class methods. When I press the mouse button spawnPedestrian() is called, but no Pedestrian is painted. Below is a running example with code from my project. If you create a project Roundabout and paste this code in it, you should be able to run it (images are hotlinked). How to fix the spawnPedestrian()

问题 How i can disable scaling (Windows 10) for java program or process this in code to fix blur on my custom components? I had tried Dsun.java2d.uiScale.enabled=false but it didn’t help. is there any solution to this problem? 回答1: Depending on the Java version you are using, you may want to consider different solutions, especially if you'd like to solve it on your application's side. In any case, and if your concern is just to disable the Windows 10 scaling, you can do so by changing your Java

问题 In my program I try to paint on a JPanel when the mouse is pressed. The mousePressed method is just to test the painting from another class. Later on the spawn method will be called by other class methods. When I press the mouse button spawnPedestrian() is called, but no Pedestrian is painted. Below is a running example with code from my project. If you create a project Roundabout and paste this code in it, you should be able to run it (images are hotlinked). How to fix the spawnPedestrian()

问题 I have a JFrame - SuperTest and JPanel - SuperLogin . The login panel has the username and password input fields and a login button. I want it to look like this: but it looks like the pic below, with input fields having too huge height and width. SuperTest.java : import javax.swing.*; public class SuperTest extends JFrame { public SuperTest() { add(new SuperLogin()); setVisible(true); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setSize(600, 400); } public static void main(String[

问题 I have got a ImageIcon in a Jlabel in a JFrame (Java GUI). The ImageIcon should get updated based on pressing a Calculate button (i.e. calcButton.addActionListener(new ActionListener() ) with part of the code in the method: icon2 = new ImageIcon("M:\\Repos\\rtrans\\radTransPlot.png"); Plot1.setIcon(icon2); frame.add(Plot1,gc); frame.setVisible(true); The initial ImageIcon (icon1) is blank: public class RadTransGui { private ImageIcon icon1 = new ImageIcon("M:\\Repos\\rtrans\\radTransPlotEmpty