红色字体出有误，怎么改啊！！！

Question

package a.b;import a.c.SanRender;
import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;public class SanjiaoxingActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        GLSurfaceView glSurfaceView=new GLSurfaceView(this);
        SanRender render=new SanRender();
        glSurfaceView.setRenderer(render);
        setContentView(glSurfaceView);
    }
}
package a.c;import java.nio.FloatBuffer;import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;import android.opengl.GLSurfaceView.Renderer;public class SanRender implements Renderer {
private FloatBuffer fb=FloatBuffer.wrap(new float[]{
-0.5f,0.0f,0.0f,
0.0f,-0.5f,0.0f,
0.5f,0.0f,0.0f,
}); @Override
public void onDrawFrame(GL10 gl) {
// TODO Auto-generated method stub
gl.glClear(GL10.GL_COLOR_BUFFER_BIT|GL10.GL_DEPTH_BUFFER_BIT);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glLoadIdentity();
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, fb);
gl.glDrawArrays(GL10.GL_TRIANGLES, 0, 3);
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
} @Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
// TODO Auto-generated method stub
gl.glViewport(0, 0, width, height);
float ratio=(float)width/height;
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity();
gl.glFrustumf(-ratio, ratio, -1, 1, 1, 10);
} @Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
// TODO Auto-generated method stub }}