Java Data Type Tutorial - Java SecurityManager() Constructor

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Syntax

SecurityManager() constructor from SecurityManager has the following syntax.

public SecurityManager()

Example

In the following code shows how to use SecurityManager.SecurityManager() constructor.

//from  ww  w.j a  v a 2s .  c  om

public class Main {
  public static void main(String[] argv) throws Exception {
    System.setProperty("java.version", "data");

    try {
      SecurityManager sm = new SecurityManager();
      System.setSecurityManager(sm);
    } catch (SecurityException se) {
      se.printStackTrace();
    }

    // no longer possible; an AccessControlException is thrown
    System.setProperty("java.version", "malicious data");
  }
}

The code above generates the following result.

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