Java.util.PropertyPermission.newPermission Collection() Method


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Description

The java.util.PropertyPermission.newPermissionCollection() method creates and returns a new PermissionCollection object.

Declaration

Following is the declaration for java.util.PropertyPermission.newPermissionCollection() method

public PermissionCollection newPermissionCollection()

Parameters

  • NA

Return Value

This method returns the newly created PermissionCollection object.

Exception

  • NA

Example

The following example shows the usage of java.util.PropertyPermission.newPermissionCollection() method.

package com.tutorialspoint;

import java.security.PermissionCollection;
import java.util.PropertyPermission;

public class PropertyPermissionDemo {
   private static PermissionCollection permissions;
   
   public static void main(String[] args) {
   // Build property permissions collection
   PropertyPermission permission = 
   new PropertyPermission("java.*", "read");
   permissions = permission.newPermissionCollection();
   permissions.add(permission);
   permissions.add(new PropertyPermission("java.home.*", "read,write"));
      
   // Check permissions
   checkFileReadPermission("java.home");
   checkFileWritePermission("java.home");
   checkFileReadPermission("java.home.usr");
   checkFileWritePermission("java.home.usr");
   }

   private static void checkFileReadPermission(String path) {
   // Check permission on read action
   if(permissions.implies(new PropertyPermission(path, "read"))) {
   System.out.println("Has permissions on "+path+" for read");
   }
   }
   
   private static void checkFileWritePermission(String path) {
   // Check permission on read action
   if(permissions.implies(new PropertyPermission(path, "write"))) {
   System.out.println("Has permissions on "+path+" for write");
   }
   }
}

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

Has permissions on java.home for read
Has permissions on java.home.usr for read
Has permissions on java.home.usr for write

java_util_propertypermission.htm

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