From 9bab4dab1ab3b86354929a1929906fe471d9fa93 Mon Sep 17 00:00:00 2001
From: Stefan Bodewig <bodewig@apache.org>
Date: Thu, 28 Sep 2000 13:41:10 +0000
Subject: [PATCH] Class.forName("") throws an IllegalArgumentException instead
 of ClassNotFoundException in JDK 1.1. Make available behavior consistent by
 ignoring empty classname attributes.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268044 13f79535-47bb-0310-9956-ffa450edef68
---
 src/etc/testcases/taskdefs/available.xml              | 2 +-
 src/main/org/apache/tools/ant/taskdefs/Available.java | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/etc/testcases/taskdefs/available.xml b/src/etc/testcases/taskdefs/available.xml
index 453d573c5..57dbc6f9d 100644
--- a/src/etc/testcases/taskdefs/available.xml
+++ b/src/etc/testcases/taskdefs/available.xml
@@ -75,7 +75,7 @@
 
   <target name="test15">
     <available property="test" 
-               classname=""/>
+               classname="org.apache.tools.ant.taskdefs.this_class_does_not_exist"/>
   </target>
 
 </project>
diff --git a/src/main/org/apache/tools/ant/taskdefs/Available.java b/src/main/org/apache/tools/ant/taskdefs/Available.java
index d0e9132e1..ae77885dc 100644
--- a/src/main/org/apache/tools/ant/taskdefs/Available.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Available.java
@@ -103,7 +103,9 @@ public class Available extends Task {
     }
 
     public void setClassname(String classname) {
-        this.classname = classname;
+        if (!"".equals(classname)) {
+            this.classname = classname;
+        }
     }
 
     public void setFile(File file) {