src/java.base/share/classes/java/io/BufferedInputStream.java

@@ -194,10 +194,13 @@
      * @param   size   the buffer size.
      * @exception IllegalArgumentException if {@code size <= 0}.
      */
     public BufferedInputStream(InputStream in, int size) {
         super(in);
+        if (in == null) {
+            throw new NullPointerException();
+        }
         if (size <= 0) {
             throw new IllegalArgumentException("Buffer size <= 0");
         }
         buf = new byte[size];
     }