1 /*
   2  * Copyright (c) 2019, 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 import java.io.BufferedInputStream;
  24 import java.io.DataInputStream;
  25 import java.io.InputStream;
  26 import java.io.PushbackInputStream;
  27 
  28 /*
  29  * @test
  30  * @bug 8067801
  31  * @summary Ensure constructors throw NPE when passed a null stream
  32  */
  33 public class ConstructorNPE {
  34     public static void main(String[] args) {
  35         int failures = 0;
  36         InputStream os = null;
  37 
  38         try {
  39             os = new BufferedInputStream(null);
  40             System.err.println("No NPE for BufferedInputStream(null)");
  41             failures++;
  42         } catch (NullPointerException ignore) {
  43         }
  44 
  45         try {
  46             os = new DataInputStream(null);
  47             System.err.println("No NPE for DataInputStream(null)");
  48             failures++;
  49         } catch (NullPointerException ignore) {
  50         }
  51 
  52         try {
  53             os = new PushbackInputStream(null);
  54             System.err.println("No NPE for PushbackInputStream(null)");
  55             failures++;
  56         } catch (NullPointerException ignore) {
  57         }
  58 
  59         if (failures > 0) throw new RuntimeException(failures + " failures");
  60     }
  61 }