diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/javacc/JJTree.java b/src/main/org/apache/tools/ant/taskdefs/optional/javacc/JJTree.java
index 771a88f28..a469e409f 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/javacc/JJTree.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/javacc/JJTree.java
@@ -1,7 +1,7 @@
 /*
  * The Apache Software License, Version 1.1
  *
- * Copyright (c) 2000-2002 The Apache Software Foundation.  All rights
+ * Copyright (c) 2000-2003 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -66,6 +66,7 @@ import org.apache.tools.ant.taskdefs.LogStreamHandler;
 import org.apache.tools.ant.types.Commandline;
 import org.apache.tools.ant.types.CommandlineJava;
 import org.apache.tools.ant.types.Path;
+import org.apache.tools.ant.util.JavaEnvUtils;
 
 /**
  * Runs the JJTree compiler compiler.
@@ -200,7 +201,7 @@ public class JJTree extends Task {
     }
 
     public JJTree() {
-        cmdl.setVm("java");
+        cmdl.setVm(JavaEnvUtils.getJreExecutable("java"));
         cmdl.setClassname("COM.sun.labs.jjtree.Main");
     }
 
diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/javacc/JavaCC.java b/src/main/org/apache/tools/ant/taskdefs/optional/javacc/JavaCC.java
index 8f2469fc0..89141fb33 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/javacc/JavaCC.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/javacc/JavaCC.java
@@ -1,7 +1,7 @@
 /*
  * The Apache Software License, Version 1.1
  *
- * Copyright (c) 2000-2002 The Apache Software Foundation.  All rights
+ * Copyright (c) 2000-2003 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -64,6 +64,7 @@ import org.apache.tools.ant.taskdefs.Execute;
 import org.apache.tools.ant.types.Commandline;
 import org.apache.tools.ant.types.CommandlineJava;
 import org.apache.tools.ant.types.Path;
+import org.apache.tools.ant.util.JavaEnvUtils;
 
 /**
  * JavaCC compiler compiler task.
@@ -270,7 +271,7 @@ public class JavaCC extends Task {
     }
 
     public JavaCC() {
-        cmdl.setVm("java");
+        cmdl.setVm(JavaEnvUtils.getJreExecutable("java"));
         cmdl.setClassname("COM.sun.labs.javacc.Main");
     }
 
diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/metamata/AbstractMetamataTask.java b/src/main/org/apache/tools/ant/taskdefs/optional/metamata/AbstractMetamataTask.java
index 3aa88789e..444afe25e 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/metamata/AbstractMetamataTask.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/metamata/AbstractMetamataTask.java
@@ -1,7 +1,7 @@
 /*
  * The Apache Software License, Version 1.1
  *
- * Copyright (c) 2001-2002 The Apache Software Foundation.  All rights
+ * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -71,6 +71,7 @@ import org.apache.tools.ant.types.CommandlineJava;
 import org.apache.tools.ant.types.FileSet;
 import org.apache.tools.ant.types.Path;
 import org.apache.tools.ant.util.FileUtils;
+import org.apache.tools.ant.util.JavaEnvUtils;
 
 /**
  * Somewhat abstract framework to be used for other metama 2.0 tasks.
@@ -118,7 +119,7 @@ public abstract class AbstractMetamataTask extends Task {
 
     /** initialize the task with the classname of the task to run */
     protected AbstractMetamataTask(String className) {
-        cmdl.setVm("java");
+        cmdl.setVm(JavaEnvUtils.getJreExecutable("java"));
         cmdl.setClassname(className);
     }
 
diff --git a/src/main/org/apache/tools/ant/taskdefs/optional/metamata/MParse.java b/src/main/org/apache/tools/ant/taskdefs/optional/metamata/MParse.java
index e4e29b6c3..3e72b8590 100644
--- a/src/main/org/apache/tools/ant/taskdefs/optional/metamata/MParse.java
+++ b/src/main/org/apache/tools/ant/taskdefs/optional/metamata/MParse.java
@@ -1,7 +1,7 @@
 /*
  * The Apache Software License, Version 1.1
  *
- * Copyright (c) 2001-2002 The Apache Software Foundation.  All rights
+ * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -66,6 +66,7 @@ import org.apache.tools.ant.taskdefs.ExecuteStreamHandler;
 import org.apache.tools.ant.taskdefs.LogStreamHandler;
 import org.apache.tools.ant.types.Commandline;
 import org.apache.tools.ant.types.Path;
+import org.apache.tools.ant.util.JavaEnvUtils;
 
 /**
  * Simple Metamata MParse task.
@@ -114,7 +115,7 @@ public class MParse extends AbstractMetamataTask {
     }
 
     public MParse() {
-        cmdl.setVm("java");
+        cmdl.setVm(JavaEnvUtils.getJreExecutable("java"));
         cmdl.setClassname("com.metamata.jj.MParse");
     }