Java works OK sans fifth glyph. You can work with for, if, int, long, char, String and arrays (no ability to ask for a count of things, though, kind of tricky), float, function calls , and class (but no class construction). Infamous "public static void main(String args)" start point will work. Calculation with also works. try/catch is OK but virtually no class to say with our constraint. Also, no subclassing of any sort - good or bad?
A small script to assist you on oulipo.social: https://gist.github.com/tie-rack/0dbe63c62c1e01362e037380ee286d18
Today I took a hot iron, oscillator, and sundry tools to an old Parisian calculator and information display, hoping to draw forth its unsung story and thus again grant it function.
firstname.lastname@example.org is my alt
Oulipo.social is a lipogrammatic Mastodon for all.
Ambigram by B. Morin, CC BY-SA 4.0