Is it possible to use immediate mode with shaders?

Newbie & Debugging Questions
#1

Such as:


public void render(Renderer renderer){
		Matrix4f transMatrix = MatrixUtils.createTransformationMatrix(p, 0, 0, 0, 2);
		Vector3f e = getRayPoint(t);
		renderer.initDebugRender();
		
		renderer.debugShader.setUniform("transformationMatrix", transMatrix);
		
		GL11.glLineWidth(2.5f);
		GL11.glBegin(GL11.GL_LINES);
			GL11.glVertex3f(0, 0, 0);
			GL11.glVertex3f(e.x, e.y, e.z);
		GL11.glEnd();
		
		renderer.endDebugRender();
	}

Note: initDebugRender() and endDebugRender() bind and unbind the associated shader as well as in the initDebugRender i set the view and projection matrices.

I would like to know if this would actually work?

Because i see nothing when trying it.

Shader Code: http://pastebin.com/0S7yzA47