package inter;import lexer.*;public class And extends Logical {   public And(Token tok, Expr x1, Expr x2) { super(tok, x1, x2); }   public void jumping(int t, int f) {      int label = f != 0 ? f : newlabel();      expr1.jumping(0, label);      expr2.jumping(t,f);      if( f == 0 ) emitlabel(label);   }}