Accessing environmental variables using java

Code used to access the environemental variables which are well defined in the system properties of an unix system

public class demoClass {
 
 String Base;
 private void loadVariables() 
 {
  
  Base = System.getProperty("COMP_BASE");
  System.out.println(Base); 
 }
 

public static void main(String[] args){
 demoClass a = new demoClass();
 a.loadVariables();
}
}

export CLASSPATH=$CLASSPATH:./
export JAVA_HOME=/opt/java1.4/
export PATH=/opt/java1.4/jre/bin:$PATH
java -DASAP_BASE=$ASAP_BASE demoClass