Return all system properties in Java

Description

The following code shows how to return all system properties.

The return value is a java.util.Properties object. The Properties class is a subclass of java.util.Hashtable.

Example

/*from  ww w .  j  a v a 2 s  .c  o  m*/

  
public class Main {

  public static void main(String[] args) {

    java.util.Properties properties = System.getProperties();
    properties.list(System.out);

  }

}

The code above generates the following result.