System.setSecurityManager(SecurityManager s) has the following syntax.
public static void setSecurityManager(SecurityManager s)
In the following code shows how to use System.setSecurityManager(SecurityManager s) method.
/*from ww w . j a v a2s .c o m*/ public class Main { public static void main(String[] args) throws Exception { if (System.getSecurityManager() == null) { System.setSecurityManager(new SecurityManager()); } } }