### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core.tests.compiler
Index: src/org/eclipse/jdt/core/tests/compiler/regression/BatchCompilerTest.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.compiler/src/org/eclipse/jdt/core/tests/compiler/regression/BatchCompilerTest.java,v
retrieving revision 1.73
diff -u -r1.73 BatchCompilerTest.java
--- src/org/eclipse/jdt/core/tests/compiler/regression/BatchCompilerTest.java	1 Sep 2006 07:48:21 -0000	1.73
+++ src/org/eclipse/jdt/core/tests/compiler/regression/BatchCompilerTest.java	18 Oct 2006 18:44:14 -0000
@@ -50,7 +50,17 @@
 		if (Util.isMacOS()) {
 			return JRE_HOME_DIR + "/../Classes/classes.jar"; 
 		}
-		return JRE_HOME_DIR + "/lib/rt.jar";
+		
+		// The IBM JRE has its base classes in vm.jar and core.jar, instead
+		// of rt.jar.
+		File file = new File(JRE_HOME_DIR + "/lib/vm.jar");
+		if (file.exists())
+			// The IBM J2SE 5.0 has put the java.lang classes in vm.jar and core.jar.
+			return
+				JRE_HOME_DIR + "/lib/vm.jar" + ":" + 
+				JRE_HOME_DIR + "/lib/core.jar";				
+		else
+			return JRE_HOME_DIR + "/lib/rt.jar";	
 	}
 	
 	private String getJCEJar() {