java - How to add 1 drawing with a button to JFrame ? -

my drawing class: example want draw simple line

public class drawnot1 extends jpanel {  private basicstroke bs = new basicstroke(2); private int x; private int y;  public drawnot1(int x, int y){     setsize(100, 100);     this.x = x;     this.y = y; }  @override protected void paintcomponent(graphics g){                    super.paintcomponent(g);     dodrawing(g); }  private void dodrawing(graphics g){     graphics2d g2d = (graphics2d) g;     g2d.setstroke(bs);      g2d.drawline(x, y, x, y+10);  } 

my jframe class:

public class main extends jframe{  private int x; private int y;  public main() {     initui(); }  public void initui() {     setsize(600, 500);     settitle("points");     setlocationrelativeto(null);     setdefaultcloseoperation(jframe.exit_on_close);     add(new drawnot1(20, 20));     add(new jbutton("button1")); }  public static void main(string[] args) {      swingutilities.invokelater(new runnable() {         @override         public void run() {             main ex = new main();             ex.setvisible(true);         }     }); } 

}

i want show drawing next button doesn't appear component appear button, drawing not.

my ultimate goal when press button drawing appear near button.

jframe uses borderlayout default, adding 2 components default (centre) position means last 1 added shown.

try adding button south position instead

add(new jbutton("button1"), borderlayout.south); 

you may find overriding getpreferredsize method of drawdot1 , providing suitable value result in better output