Java.lang.System.getSecurityManager() Method

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Description

The java.lang.System.getSecurityManager() method gets the system security interface.

Declaration

Following is the declaration for java.lang.System.getSecurityManager() method

public static SecurityManager getSecurityManager()

Parameters

NA

Return Value

This method returns the security manager if that security manager has already been established for the current application, else null is returned.

Exception

NA

Example

The following example shows the usage of java.lang.System.getSecurityManager() method.

package com.tutorialspoint;

import java.lang.*;

public class SystemDemo {

   public static void main(String[] args) {

      // prints the name of the Operating System
      System.out.println(System.getProperty("os.name"));

      SecurityManager s = System.getSecurityManager();
      if(s == null) {
         System.out.println("SecurityManager not been established..");
      }
   }
} 

Let us compile and run the above program, this will produce the following result −

Linux
SecurityManager not been established..