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 }