無名関数っぽく

最近こんなのばっかりだけど。

function add = new function() {

    public Object def(Object arg) {

        return arg[0].toString() + arg[1].toString();

    }

};
String str = (String) add._("hello, ", "world.");

System.out.println(str);

public class function {
    protected Object _this = null;
    public function() {

    }
    public function(Object _this) {

        this._this = _this;

    }
    public Object def(Object arg) {

        throw new UnsupportedOperationException();

    }
    public Object _() {

        return def(new Object[0]);

    }
    public Object _(Object arg1) {

        Object args = { arg1 };

        return def(args);

    }
    public Object _(Object arg1, Object arg2) {

        Object args = { arg1, arg2 };

        return def(args);

    }
    public Object _(Object arg1, Object arg2, Object arg3) {

        Object[] args = { arg1, arg2, arg3 };

        return def(args);

    }
}