Ok, I just want to know if you have any suggestions for improving this
code. I  dont like typing System.out before all my I/O calls but I
cant extend System.out because I am extending DepthFirstAdapter.

I dont like calling print() one line and then println() on the next.
Something like printf would be nice.

Any other suggestions welcome.

package redick;

import redick.analysis.*;
import redick.node.*;

class Translation extends DepthFirstAdapter {

    public void outASexpExpr(ASexpExpr node) {

        System.out.print("arg1 ");
        System.out.println(node.getArg1());

        System.out.print("arg2 ");
        System.out.println(node.getArg2());

        System.out.print("dyad ");
        System.out.println(node.getDyad());

        Double arg1 = Double.parseDouble(node.getArg1().toString());
        Double arg2 = Double.parseDouble(node.getArg2().toString());
        Double sum  = arg1 + arg2 ;

        System.out.print("Their sum: ");
        System.out.println(sum);

    }

}