1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 4463345

    27  * @summary Simple test of System.clearProperty

    28  * @run main/othervm ClearProperty

    29  */

    30 

    31 public class ClearProperty {

    32     public static void main(String [] argv) throws Exception {

    33         clearTest();

    34         paramTest();

    35     }

    36 

    37     static void clearTest() throws Exception {

    38         System.setProperty("blah", "blech");

    39         if (!System.getProperty("blah").equals("blech"))

    40             throw new RuntimeException("Clear test failed 1");

    41         System.clearProperty("blah");

    42         if (System.getProperty("blah") != null)

    43             throw new RuntimeException("Clear test failed 2");

    44     }

    45 

    46     static void paramTest() throws Exception {

    47         try {

    48             System.clearProperty(null);

    49             throw new RuntimeException("Param test failed");

    50         } catch (NullPointerException npe) {

    51             // Correct result

    52         }

    53         try {

    54             System.clearProperty("");

    55             throw new RuntimeException("Param test failed");

    56         } catch (IllegalArgumentException iae) {

    57             // Correct result

    58         }

    59     }

    60 }