prod/net/jaekl/cfb/util/Util.java

   1 package net.jaekl.cfb.util;
   2
   3 // Copyright (C) 2015 Christian Jaekl
   4
   5 import java.io.PrintWriter;
   6 import java.io.StringWriter;
   7
   8 public class Util {
   9         public static String stringify(Throwable thr)
  10         {
  11                 StringWriter sw = new StringWriter();
  12                 PrintWriter pw = new PrintWriter(sw);
  13                 thr.printStackTrace(pw);
  14                 return sw.toString();
  15         }
  16
  17         // Test for equality, while taking care to avoid
  18         // dereferencing a null pointer.
  19         // Note that two null pointers are considered equal.
  20         public static boolean objsAreEqual(Object a, Object b)
  21         {
  22                 if ((null == a) || (null == b)) {
  23                         return (a == b);
  24                 }
  25
  26                 return a.equals(b);
  27         }
  28
  29         // Return 1 if obj is null, or obj.hashCode() otherwise
  30         public static int objHashCode(Object obj)
  31         {
  32                 if (null == obj) {
  33                         return 1;
  34                 }
  35                 return obj.hashCode();
  36         }
  37 }