public class Loader{

public void gl_load3D(int WIDTH, int HEIGHT) {
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();

    GLU.gluPerspective((float) 60, WIDTH/HEIGHT, 0.001f, 3500);

    //glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

    glEnable(GL_TEXTURE_2D);
    glShadeModel(GL_SMOOTH);
    glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
    glClearDepth(100.0f);
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LEQUAL);
    glDisable(GL_BLEND);
    }

public void gl_load2D(){
        // switch to 2d drawing
        glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
        glClearDepth(1);
        glViewport(0,0,800,600);
        glMatrixMode(GL_MODELVIEW);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        glOrtho(0, Main.width, Main.height, 0, 1, -1);
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();
        glEnable(GL_BLEND);
    }
}

public class Gui {
Loader loader = new Loader();
TrueTypeFont font;

public void renderGUI(int height, int width){
    loader.gl_load2D();
    font.drawString(200, 200, "HELLOOOOOOOOOO", Color.blue);
    loader.gl_load3D(Main.width, Main.height);
}

public void loadFont(){
    Font awtFont = new Font("Times New Roman", Font.BOLD, 100);
    font = new TrueTypeFont(awtFont, false);
}
}