tests: java: avoid recent Java features

Tests 463 and 464 fail with Java 1.4 compilers.

Reported by Michael Felt.
<http://lists.gnu.org/archive/html/bug-bison/2015-01/msg00091.html>

* tests/javapush.at: Use StringBuffer instead of StringBuilder.

1 files changed, 21 insertions, 3 deletions

diff --git a/tests/javapush.at b/tests/javapush.at
index 28e69471..dcac4f96 100644
--- a/tests/javapush.at
+++ b/tests/javapush.at
@@ -241,10 +241,13 @@ m4_define([AT_CALC_BODY],[
   static StringReader
   getinput(String filename) throws IOException
   {
-    StringBuilder buf = new StringBuilder();
+    // Yes, there are better alternatives to StringBuffer.  But we
+    // don't really care about performances here, while portability
+    // to older Java matters.
+    StringBuffer buf = new StringBuffer();
     FileReader file = new FileReader(filename);
     int c;
-    while ((c=file.read()) > 0)
+    while (0 < (c = file.read()))
       buf.append((char)c);
     file.close();
     return new StringReader(buf.toString());
@@ -302,6 +305,13 @@ exp:
 ;
 ])
 
+
+
+## ------------------------------------- ##
+## Calc parser with api.push-pull both.  ##
+## ------------------------------------- ##
+
+
 # Test that the states transitioned by the push parser are the
 # same as for the pull parser.  This test is assumed to work
 # if it produces the same partial trace of stack states as is
@@ -577,8 +587,9 @@ Stack now 0 7 15
 ]])
 
 AT_BISON_CHECK([PUSHPULLFLAG [-o Calc.java Calc.y]])
+
 AT_JAVA_COMPILE([[Calc.java]])
-#Verify that this is a push parser.
+# Verify that this is a push parser.
 AT_CHECK_JAVA_GREP([[Calc.java]],
                    [[.*public void push_parse_initialize().*]])
 # Capture stderr output for comparison purposes.
@@ -593,6 +604,13 @@ AT_CHECK([[sed -e '/^Stack now.*$/p' -e d ./stderr]],
 AT_BISON_OPTION_POPDEFS
 AT_CLEANUP
 
+
+
+## ---------------------------------------------------------------- ##
+## Calc parser with %locations %code lexer and api.push-pull both.  ##
+## ---------------------------------------------------------------- ##
+
+
 # This test looks for location reporting by looking
 # at the lexer output with locations enabled.
 # It defines a lexer that reports location info.