问在当前线程中没有找到OpenGL上下文，如何修复此错误？

EN

我正在做一个纸牌游戏，目前有一个很好的基础，但是当我在eclipse中运行它时，我遇到了一个错误。我还使用了光滑的2d。

这是来自控制台的错误。

线程“主”java.lang.RuntimeException中的异常:在当前线程中没有找到OpenGL上下文。在org.lwjgl.opengl.GLContext.getCapabilities(GLContext.java:124) at org.lwjgl.opengl.GL11.glGetError(GL11.java:1277) at org.newdawn.slick.opengl.renderer.ImmediateModeOGLRenderer.glGetError(ImmediateModeOGLRenderer.java:387) at org.newdawn.slick.opengl.InternalTextureLoader.getTexture(InternalTextureLoader.java:337) at org.newdawn.slick.opengl.InternalTextureLoader.getTexture(InternalTextureLoader.java:275) at org.newdawn.slick.Image.(Image.java( org.newdawn.slick.Image.(Image.java:244) at org.newdawn.slick.Image.(Image.java:232) at org.newdawn.slick.Image.(Image.java:198) at Cards.Card.(Card.java:18) )

我认为错误发生的来源的代码(Card类)

package Cards;
import org.newdawn.slick.Image;
import org.newdawn.slick.SlickException;
public class Card
{
    final int numCards = 52;
    Image[] card = new Image [numCards];
    Card (int c)
    {
        String fileLocation = new String ();
        for (int i = 1 ; i <= 52 ; i++)
        {
            fileLocation = "res/cards/" + i + ".png";
            try 
            {

                card [i] = new Image (fileLocation); //line
            }
            catch (SlickException e)
            {
                e.printStackTrace ();
            }
        }
    }
    public Image getImage (int cardlocation)
    {
        return card [cardlocation];
    }
}

以前有人见过这种问题吗？我该怎么解决呢？