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- Java.lang Package classes
- Java.lang - Home
- Java.lang - Boolean
- Java.lang - Byte
- Java.lang - Character
- Java.lang - Character.Subset
- Java.lang - Character.UnicodeBlock
- Java.lang - Class
- Java.lang - ClassLoader
- Java.lang - Compiler
- Java.lang - Double
- Java.lang - Enum
- Java.lang - Float
- Java.lang - InheritableThreadLocal
- Java.lang - Integer
- Java.lang - Long
- Java.lang - Math
- Java.lang - Number
- Java.lang - Object
- Java.lang - Package
- Java.lang - Process
- Java.lang - ProcessBuilder
- Java.lang - Runtime
- Java.lang - RuntimePermission
- Java.lang - SecurityManager
- Java.lang - Short
- Java.lang - StackTraceElement
- Java.lang - StrictMath
- Java.lang - String
- Java.lang - StringBuffer
- Java.lang - StringBuilder
- Java.lang - System
- Java.lang - Thread
- Java.lang - ThreadGroup
- Java.lang - ThreadLocal
- Java.lang - Throwable
- Java.lang - Void
- Java.lang Package extras
- Java.lang - Interfaces
- Java.lang - Errors
- Java.lang - Exceptions
- Java.lang Package Useful Resources
- Java.lang - Useful Resources
- Java.lang - Discussion
Java System getSecurityManager() Method
Description
The Java 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: Getting Security Manager
The following example shows the usage of Java System getSecurityManager() method. In this program, we've retrieved the SecurityManager status and printed a message if security manager is not established.
package com.tutorialspoint; 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.."); } } }
Output
Let us compile and run the above program, this will produce the following result −
Windows 11 SecurityManager not been established..
java_lang_system.htm
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