我在Sco OpenServer版本5.0.6上运行Java应用程序时遇到问题

Question

My Sco OpenServer Release 5.0.6 have a java version which is :

# java -version

java version "1.3.1_22"

Java(Tm) Runtime Environment, Standard Edition (build SCO-UNIX-J2SE-1.3.1_22:* FCS*:20080305) Classic VM (build SCO-UNIX-J2SE-1.3.1_22: FCS :20080305, green threads, sunwjit)

My java application have developed in Windows with java version 6 update 25.

i understand , i should change my code to work with java 1.3 like following trouble :

1. Generic is not supported like ArrayList<String>
2. String.format is not supported for (String,double)
3. For each loop is not supported

What code should come to replace the unsupported java version code below?

ArrayList<String> messages;

for (String message : messages)

String.format("%1$td/%1$tm/%1$tY %1$tI:%1$tM:%1$tS %1$Tp", new Date())

Answer 1

Is there no possibility to upgrade the version of Java on your server? 1.3 is pretty ancient and I think you'll end up with trouble. But to answer your specific questions:

   /* ArrayList<String> messages; */
   ArrayList messages;

   /* for (String message : messages) */
   for (Iterator it = messages.iterator(); ; it.hasNext()) {
       String message = it.next();
       ...
   }

   /* String.format("%1$td/%1$tm/%1$tY %1$tI:%1$tM:%1$tS %1$Tp", new Date()) */
   new SimpleDateFormat("your-desired-format").format(new Date());

Answer 2

for(int i=0;i<messages.size();i++) {
     String s = messages.get(i).toString();
}