Read properties with and without security manager - Java Native OS

Java examples for Native OS:Environment

  1. HOME
  2. Java
  3. Native OS
  4. Environment

Description

Read properties with and without security manager

Demo Code

import java.lang.*;
import java.security.*;

class GetProps {//from   w  w w.j  a  va2s .  c o  m

    public static void main(String[] args) {

        /* Test reading properties w & w/out security manager */

        String s;

        try {

            System.out.println("About to get os.name property value");

            s = System.getProperty("os.name", "not specified");
            System.out.println("  The name of your operating system is: "
                    + s);

            System.out.println("About to get java.version property value");

            s = System.getProperty("java.version", "not specified");
            System.out
                    .println("  The version of the JVM you are running is: "
                            + s);

            System.out.println("About to get user.home property value");

            s = System.getProperty("user.home", "not specified");
            System.out.println("  Your user home directory is: " + s);

            System.out.println("About to get java.home property value");

            s = System.getProperty("java.home", "not specified");
            System.out
                    .println("  Your JRE installation directory is: " + s);

        } catch (Exception e) {
            System.err.println("Caught exception " + e.toString());
        }

    }

}

/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

Related Tutorials