@Override
    public void write(JmeExporter e) throws IOException {
        OutputCapsule capsule = e.getCapsule(this);
        capsule.write(location, "location", Vector3f.ZERO);
        capsule.write(rotation, "rotation", Quaternion.DIRECTION_Z);
        capsule.write(frustumNear, "frustumNear", 1);
        capsule.write(frustumFar, "frustumFar", 2);
        capsule.write(frustumLeft, "frustumLeft", -0.5f);
        capsule.write(frustumRight, "frustumRight", 0.5f);
        capsule.write(frustumTop, "frustumTop", 0.5f);
        capsule.write(frustumBottom, "frustumBottom", -0.5f);
        capsule.write(coeffLeft, "coeffLeft", new float[2]);
        capsule.write(coeffRight, "coeffRight", new float[2]);
        capsule.write(coeffBottom, "coeffBottom", new float[2]);
        capsule.write(coeffTop, "coeffTop", new float[2]);
        capsule.write(viewPortLeft, "viewPortLeft", 0);
        capsule.write(viewPortRight, "viewPortRight", 1);
        capsule.write(viewPortTop, "viewPortTop", 1);
        capsule.write(viewPortBottom, "viewPortBottom", 0);
        capsule.write(width, "width", 0);
        capsule.write(height, "height", 0);
        capsule.write(name, "name", null);
    }
Returns the display height.

@return the height/resolution of the display.
jme3-core/src/main/java/com/jme3/renderer/Camera.java