Re: Please tighten up these 10 lines of Java code

From:
Patricia Shanahan <pats@acm.org>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 13 Aug 2007 20:42:17 -0700
Message-ID:
<f9r8ar$2kuc$1@ihnp4.ucsd.edu>
Thomas Fritsch wrote:

metaperl.etc@gmail.com wrote:

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.

    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);


Why not use the + operator for strings/objects ?
(and BTW: the Double-handling can be shortened a bit, too)
    System.out.println("arg1 " + node.getArg1());
    System.out.println("arg2 " + node.getArg2());
    System.out.println("dyad " + node.getDyad());
    double arg1 = Double.parseDouble(node.getArg1());
    double arg2 = Double.parseDouble(node.getArg2());
    double sum = arg1 + arg2 ;
    System.out.print("Their sum: " + sum);


That is how I would code it.

However, PrintStream does now have printf, and "import static
java.lang.System.out" would allow reference to "out" without qualification.

Patricia

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