//GL11 is a java static class
//how can i convert this
GL11.glEnable(GL11.GL_TEXTURE_2D)
GL11.glShadeModel(GL11.GL_SMOOTH)
GL11.glClearColor(0.0f,0.0f,0.0f,0.0f)
GL11.glEnable(GL11.GL_DEPTH_TEST)
GL11.glDepthFunc(GL11.GL_NICEST)
GL11.glMatrixMode(GL11.GL_PROJECTION)
GL11.glLoadIdentity

//into this
using (GL11) {
    glEnable(GL11.GL_TEXTURE_2D)
    glShadeModel(GL11.GL_SMOOTH)
    glClearColor(0.0f,0.0f,0.0f,0.0f)
    glEnable(GL11.GL_DEPTH_TEST)
    glDepthFunc(GL11.GL_NICEST)
    glMatrixMode(GL11.GL_PROJECTION)
    glLoadIdentity
}