java - Painting multiple JComponent on JPanel not working -

i don't this. want add highlight extends jcomponent objects pdfpage extends jpanel highlight components simple not painted. can see paint() , paintcomponent() methods getting called in correct order not show. thing fixes problem add:

for(component component : this.getcomponents()) {                component.paint(g);          } 

into pdfpanel.paint() method not how want that. want pdfpage extends jpanel render jcomponent i'm adding not override paint() if possible.

this how add highlight components pdfpage panels:

for (datasheeterror datasheeterror : datasheeterrorlist) {      int pagenumber = datasheeterror.getpagenumber();     highlight highlight = createerrorhighlight(datasheeterror);      pdfpage pdfpage = pdfpages[pagenumber];          pdfpage.add(highlight); } 

this how pdfpage looks like. note not using layoutmanager calling super(null);:

public class pdfpage extends jpanel  {     private static final long serialversionuid = 7756137054877582063l;      final image pageimage;      public pdfpage(image pageimage) {         // no need 'layoutmanager'         super(null);          this.pageimage = pageimage;              rectangle bounds = new rectangle(0, 0, pageimage.getwidth(null), pageimage.getheight(null));         this.setbounds(bounds);         this.setlayout(null);     }      @override     protected void paintcomponent(graphics g) {         super.paintcomponent(g);         paintpdfpage(g);     }      private void paintpdfpage(graphics g) {         // transparent background see if `highlight` gets painted         g.setcolor(new color(1.0f, 1.0f, 1.0f, 0.0f));         g.fillrect(0, 0, getwidth(), getheight());     }  } 

in highlight.java can see call this.setbounds(bounds);

public class highlight extends jcomponent {     private static final long serialversionuid = -1010170342883487727l;      private color bordercolor = new color(0, 0, 0, 0);      private color fillcolor;      public highlight(rectangle bounds, color fillcolor) {         this.fillcolor = fillcolor;          this.setbounds(bounds);     }      @override     protected void paintcomponent(graphics g) {          super.paintcomponent(g);          rectangle bounds = this.getbounds();          g.setcolor(this.fillcolor);         g.fillrect(bounds.x, bounds.y, bounds.width, bounds.height);          g.setcolor(this.bordercolor);         g.drawrect(bounds.x, bounds.y, bounds.width, bounds.height);         } } 

looks problem coordinate space

protected void paintcomponent(graphics g) { ...         rectangle bounds = this.getbounds();          g.setcolor(this.fillcolor);         g.fillrect(bounds.x, bounds.y, bounds.width, bounds.height); ...     } 

the getbounds() returns component's rectanle on parent container. when can call g.fillrect(0, 0, bounds.width, bounds.height);