static JSplitPane jvsplit_minZero(Component n, Component s, double splitPoint default 0.5) {
  ret jvsplit(jMinHeight0(s), jMinHeight0(s), splitPoint);
}

static JSplitPane jvsplit_minZero(double splitPoint, Component s, Component n) {
  ret jvsplit_minZero(s, n, splitPoint);
}