### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core
Index: model/org/eclipse/jdt/internal/core/JavaModelStatus.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/JavaModelStatus.java,v
retrieving revision 1.49
diff -u -r1.49 JavaModelStatus.java
--- model/org/eclipse/jdt/internal/core/JavaModelStatus.java	18 Jan 2011 05:42:02 -0000	1.49
+++ model/org/eclipse/jdt/internal/core/JavaModelStatus.java	25 Apr 2011 09:13:05 -0000
@@ -344,7 +344,7 @@
 
 				case CLASSPATH_CYCLE:
 					javaProject = (IJavaProject)this.elements[0];
-					return Messages.bind(Messages.classpath_cycle, javaProject.getElementName());
+					return Messages.bind(Messages.classpath_cycle, new String[] {javaProject.getElementName(), this.string});
 
 				case DISABLED_CP_EXCLUSION_PATTERNS:
 					javaProject = (IJavaProject)this.elements[0];
Index: model/org/eclipse/jdt/internal/core/JavaProject.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/JavaProject.java,v
retrieving revision 1.445
diff -u -r1.445 JavaProject.java
--- model/org/eclipse/jdt/internal/core/JavaProject.java	8 Mar 2011 14:06:16 -0000	1.445
+++ model/org/eclipse/jdt/internal/core/JavaProject.java	25 Apr 2011 09:13:05 -0000
@@ -406,9 +406,29 @@
 							throw new JavaModelException(e);
 						}
 					} else {
+						IJavaProject[] projectsInCycle;
+						String cycleString = "";	 //$NON-NLS-1$
+						if (cycleParticipants.isEmpty()) {
+							projectsInCycle = null;
+						} else {
+							projectsInCycle = new IJavaProject[cycleParticipants.size()];
+							Iterator it = cycleParticipants.iterator();
+							int k = 0;
+							while (it.hasNext()) {
+								//projectsInCycle[i++] = (IPath) it.next();
+								IResource member = workspaceRoot.findMember((IPath) it.next());
+								if (member != null && member.getType() == IResource.PROJECT){
+									projectsInCycle[k] = JavaCore.create((IProject)member);
+									if (projectsInCycle[k] != null) {
+										if (k != 0) cycleString += ", "; //$NON-NLS-1$
+										cycleString += projectsInCycle[k++].getElementName();
+									}
+								}
+							}
+						}
 						// create new marker
 						project.createClasspathProblemMarker(
-							new JavaModelStatus(IJavaModelStatusConstants.CLASSPATH_CYCLE, project));
+							new JavaModelStatus(IJavaModelStatusConstants.CLASSPATH_CYCLE, project, cycleString));
 					}
 				} else {
 					project.flushClasspathProblemMarkers(true, false);
Index: model/org/eclipse/jdt/internal/core/util/messages.properties
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/util/messages.properties,v
retrieving revision 1.83
diff -u -r1.83 messages.properties
--- model/org/eclipse/jdt/internal/core/util/messages.properties	18 Jan 2011 05:42:02 -0000	1.83
+++ model/org/eclipse/jdt/internal/core/util/messages.properties	25 Apr 2011 09:13:05 -0000
@@ -141,7 +141,7 @@
 classpath_cannotUseLibraryAsOutput = Source folder ''{0}'' in project ''{2}'' cannot output to library ''{1}''
 classpath_closedProject = Required project ''{0}'' needs to be open
 classpath_couldNotWriteClasspathFile = Could not write ''.classpath'' file of project ''{0}'': {1}
-classpath_cycle = A cycle was detected in the build path of project ''{0}''
+classpath_cycle = A cycle was detected in the build path of project ''{0}''. The cycle consists of projects '{'{1}'}'
 classpath_duplicateEntryPath = Build path contains duplicate entry: ''{0}'' for project ''{1}''
 classpath_illegalContainerPath = Illegal classpath container path: ''{0}'' in project ''{1}'', must have at least one segment (containerID+hints)
 classpath_illegalEntryInClasspathFile = Illegal entry in ''.classpath'' of project ''{0}'' file: {1}