!747 m { static Class __javax; p { print(__javax); set(__javax, "customSystemOut", new Appendable() { // only using this one public Appendable append(CharSequence s) { print("recursion alert :) " + s); return this; } public Appendable append(char c) { return this; } public Appendable append(CharSequence s, int start, int end) { return this; } }); print("wups"); } }