8041917: unexcepted behavior of LineBorder while using Boolean variable true

Reviewed-by: alexsch, serb

src/share/classes/javax/swing/border/LineBorder.java

@@ -133,8 +133,8 @@ public class LineBorder extends AbstractBorder
             int offs = this.thickness;
             int size = offs + offs;
             if (this.roundedCorners) {
-                int arc = offs + size;
-                outer = new RoundRectangle2D.Float(x, y, width, height, arc, arc);
+                float arc = .2f * offs;
+                outer = new RoundRectangle2D.Float(x, y, width, height, offs, offs);
                 inner = new RoundRectangle2D.Float(x + offs, y + offs, width - size, height - size, arc, arc);
             }
             else {

test/javax/swing/border/Test4252164.java

@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug 4252164
+ * @bug 4252164 8041917
  * @summary Tests rounded LineBorder for components
  * @author Sergey Malenkov
  * @run applet/manual=yesno Test4252164.html