加载自定义字体时出现问题

我正在尝试在 slick2d 中加载字体，该字体（在 Eclipse 中）位于："resources\fonts\slkscr.ttf"使用以下代码：

private void loadResources()  {
    try  {
        Font fontRaw = Font.createFont(Font.TRUETYPE_FONT, 
            new BufferedInputStream(Game.class.getClassLoader().
                getResourceAsStream("resources/fonts/slkscr.ttf")));
        Font fontBase = fontRaw.deriveFont(Font.PLAIN, 20);

        this.font = new TrueTypeFont(fontBase, false);
    } catch (IOException e)  {
        e.printStackTrace();
    } catch (FontFormatException e) {
        e.printStackTrace();
    }
}

堆栈跟踪打印：

java.io.IOException: Stream closed 
    at java.io.BufferedInputStream.getInIfOpen(BufferedInputStream.java:151) 
    at java.io.BufferedInputStream.read1(BufferedInputStream.java:273) 
    at java.io.BufferedInputStream.read(BufferedInputStream.java:334) 
    at java.io.FilterInputStream.read(FilterInputStream.java:107) 
    at java.awt.Font.createFont(Font.java:885) 
    at org.darestium.applications.games.game.EditorState.loadResources(EditorState.java:43) 
    at org.darestium.applications.games.game.EditorState.init(EditorState.java:61) 
    at org.darestium.applications.games.game.Game.initStatesList(Game.java:36) 
    at org.newdawn.slick.state.StateBasedGame.init(StateBasedGame.java:164) 
    at org.newdawn.slick.AppGameContainer.setup(AppGameContainer.java:390) 
    at org.newdawn.slick.AppGameContainer.start(AppGameContainer.java:314) 
    at org.darestium.applications.games.game.Game.main(Game.java:31) java.io.IOException: Stream closed 
    at java.io.BufferedInputStream.getInIfOpen(BufferedInputStream.java:151) 
    at java.io.BufferedInputStream.read1(BufferedInputStream.java:273) 
    at java.io.BufferedInputStream.read(BufferedInputStream.java:334) 
    at java.io.FilterInputStream.read(FilterInputStream.java:107) 
    at java.awt.Font.createFont(Font.java:885) 
    at org.darestium.applications.games.game.EditorState.loadResources(EditorState.java:43) 
    at org.darestium.applications.games.game.EditorState.init(EditorState.java:61) 
    at org.newdawn.slick.state.StateBasedGame.init(StateBasedGame.java:171) 
    at org.newdawn.slick.AppGameContainer.setup(AppGameContainer.java:390) 
    at org.newdawn.slick.AppGameContainer.start(AppGameContainer.java:314) 
    at org.darestium.applications.games.game.Game.main(Game.java:31) 
Mon Jun 04 18:36:32 EST 2012 ERROR:null

关于如何防止字体不加载有什么想法吗？

private void loadResources() throws FontFormatException, IOException  {
        Font fontRaw = Font.createFont(Font.TRUETYPE_FONT, new File("resources/fonts/slkscr.ttf"));
        Font fontBase = fontRaw.deriveFont(28f);
        this.font = new TrueTypeFont(fontBase, false);
}