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How can I write a Java program to draw a box, an oval, and an arrow?


How can I write a Java program to draw a box, an oval, and an arrow?

By : fularon
Date : October 26 2020, 11:51 AM
Any of those help You'll find what you're looking for in the Java 2D Graphics Tutorial. The section on Drawing Geometric Primitives shows how to draw rectangles and ovals, and you should be able to put an arrow together after reading the Drawing Arbitrary Shapes section.
code :


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How do I draw my own submenu arrow in owner draw menus (and prevent windows from painting its arrow on top of mine)

How do I draw my own submenu arrow in owner draw menus (and prevent windows from painting its arrow on top of mine)


By : craig
Date : March 29 2020, 07:55 AM
Hope this helps See Owner Drawing the Submenu Arrow on CodeGuru.
In a nutshell, the OS always draws the arrow after you are done drawing the menu item, but you can use ExcludeClipRect() to exclude the menu item's rectangle from the HDC's drawable area after you are done drawing inside of it, so that the OS can't draw over top of your drawing.
(Java) Can anyone explain to me why my code does not draw an oval in my GUI

(Java) Can anyone explain to me why my code does not draw an oval in my GUI


By : Stephen
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Let us make class taskTwo extend class JPanel and over-ride it's paintComponent() function. You don't need to call this function explicity. It will be called by default when a new JPanel object is created. Make the following changes and let me know if this doesn't work out:
code :
public class taskTwo extends JPanel
{ //extended JPanel so that we can over-ride the paintComponent() function in it.

//all your code for creating JFrame and adding panel to it.

//replace public void paint() with painComponent()

public void paintComponent(Graphics g)
{
  float red=rand.nextFloat();
  float green=rand.nextFloat();
  float blue=rand.nextFloat();
   Color randomColor=new Color(red,green,blue);
   g.drawOval(50,50,25,25);
    g.setColor(randomColor);
    g.fillOval(50,50,25,25);
}
}
I want to turn one oval css shape into oval with arrow

I want to turn one oval css shape into oval with arrow


By : Викуля Уйманова
Date : March 29 2020, 07:55 AM
I hope this helps . Here is a CSS only solution using pseudo elements :before and :after.
Updated fiddle
code :
ul {
  list-style: none;
  counter-reset: step;
}
.progressbar li {
  position: relative;
  width: 60px;
  height: 40px;
  line-height: 35px;
  display: block;
  margin: 0 auto 10px auto;
  background-color: #d5d5d5;
  border-radius: 20px 0px 0px 20px;
}
.progressbar li:before {
  content: counter(step) !important;
  counter-increment: step !important;
  font-family: arial;
  font-size: 14px;
  position: absolute;
  background-color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  top: 50%;
  text-align: center;
  margin-left: 4px;
  color: #666666;
  transform: translateY(-50%);
}
.progressbar li:after {
  content: "";
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  background-color: #d5d5d5;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  z-index: -1;
}
<ul class="progressbar">
  <li></li>
  <li></li>
  <li></li>
  <li></li>
  <li></li>
</ul>
Draw oval using Leafletjs Draw Library

Draw oval using Leafletjs Draw Library


By : Dmitriy Bogdanov
Date : October 24 2020, 01:32 PM
hope this fix your issue It seems I've got your mistake - change (p.y - r) to (p.y - r * this.ry) :
code :
if (L.Browser.svg) {
      var rr = 'M' + p.x + ',' + (p.y - r * this.ry) + 
      'A' + (r * this.rx) + ',' + (r * this.ry) + ',0,0,0,' + p.x  + ',' + (p.y + r * this.ry) + 
      'A' + (r * this.rx) + ',' + (r * this.ry) + ',0,1,0,' + (p.x) + ',' + (p.y - r * this.ry) +' z';
can't draw oval in java

can't draw oval in java


By : dyrdyr
Date : March 29 2020, 07:55 AM
this one helps. The inner content of a JFrame is its contentpane. You can just set the frame's contentpane to the panel that you want to draw, with JFrame.setContentPane(). Then your panel will be shown.
code :
public class Ball extends JPanel{

    public void paint(Graphics g) {
        g.drawOval(100, 100, 50, 50);
    }

    public static void main(String[] args) {
        JFrame game = new JFrame("Ball game!");
        game.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        game.setResizable(false);
        game.setLayout(null);
        game.setSize(300, 550);
        game.setLocation(400, 200);

        Ball d = new Ball();

        game.setContentPane(d); // <- this line
        game.setVisible(true);
    }

}
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