JDK 7 中的 sun.font.FontDesignMetrics 编译错误

Question

Following code compiles well with JDK5 but for JDK7 it throws a compile error saying

"sun.font.FontDesignMetrics" is private

FontUIResource fontUiResource = (FontUIResource) MyUI.get("MainTitle");
if (fontUiResource != null) {
FontDesignMetrics fontMetrics = new FontDesignMetrics(fontUiResource);

I'm using Intellij 12, just in case if this is information related to the problem.

Answer 1

It seems the constructors were made private in jdk6. The JavaDoc of the constructor says : "Its private to enable caching - call getMetrics() instead". Such a change is of course always one of the risks when using a private unsupported API.

Answer 2

Graphics graphics = image.getGraphics();
FontMetrics metrics = graphics.getFontMetrics(font);

Try this one.