Simple program to view system property

GetSystemProperty.java

/**
 * Simple program to get the value of a single system property.
 * 
 * @author xperimental
 */
class GetSystemProperty {

  public static void main(String[] args) {
    if (args.length != 1) {
      System.out.println("usage: java GetSystemProperty property-name");
      return;
    }
    String key = args[0];
    String value = System.getProperty(key);
    System.out.println(String.format("%s = %s", key, value));
  }

}