Question

Please suggest a way to get the return String from my class in UNIX.

This is my sample class:

package com.mytest.package.main;

    public class DateExtractor {

        public static String getDate() {
          return "20120924";
        }

        public static void main (String[] args) {
           system.out.println(getDate());
        }

    }

And my UNIX script:

JAVA_BIN="/usr/bin"
log_dir="/usr/tmp/log"
JVM_OPTION="-Xms512m -Xmx2g -DprojectName=mytestproj -Dlog.dir=$log_dir"
CP="/usr/tmp"
MAIN_CLASS=com.mytest.package.main.DateExtractor

$NOHUP $JAVA_BIN/java ${JVM_OPTION:-} -classpath $CP $MAIN_CLASS 

Expected Result:

echo $Data_from_getDate
20120924

Answer 1

Two recommendations:

Put the output of your program on the standard output

System.out.println(getDate());

To echo the result in your unix script

echo `$JAVA_BIN/java ${JVM_OPTION:-} -classpath $CP $MAIN_CLASS`