error

protected int createShader(String shaderCode, int shaderType) throws Exception {

        int shaderId = glCreateShader(shaderType);

        glShaderSource(shaderId, shaderCode);
        glCompileShader(shaderId);
        glAttachShader(programId, shaderId);

        if (glGetShaderi(shaderId, GL_COMPILE_STATUS) == 0) {

            throw new Exception("Error compiling Shader code: " + glGetShaderInfoLog(shaderId, 1024));

        }


        if (shaderId == 0) {

            throw new Exception("Error creating shader. Type: " + shaderType);

        }

        return shaderId;

    }