Index: core extension/org/eclipse/jdt/internal/corext/util/AllTypesCache.java
===================================================================
RCS file: /home/eclipse/org.eclipse.jdt.ui/core extension/org/eclipse/jdt/internal/corext/util/AllTypesCache.java,v
retrieving revision 1.38
diff -u -r1.38 AllTypesCache.java
--- core extension/org/eclipse/jdt/internal/corext/util/AllTypesCache.java	6 May 2004 13:07:52 -0000	1.38
+++ core extension/org/eclipse/jdt/internal/corext/util/AllTypesCache.java	12 May 2004 20:01:27 -0000
@@ -166,7 +166,7 @@
 			
 			final ArrayList typesFound= new ArrayList(fSizeHint);
 
-			class RequestorAbort extends Error { }
+			class RequestorAbort extends RuntimeException { }
 		
 			ITypeNameRequestor requestor= new TypeInfoRequestor(typesFound) {
 				protected boolean inScope(char[] packageName) {
@@ -464,7 +464,7 @@
 	 * Checks if the search index is up to date.
 	 */
 	public static boolean isIndexUpToDate() {
-		class TypeFoundException extends Error {
+		class TypeFoundException extends RuntimeException {
 		}
 		ITypeNameRequestor requestor= new ITypeNameRequestor() {
 			public void acceptClass(char[] packageName, char[] simpleTypeName, char[][] enclosingTypeNames, String path) {
Index: ui/org/eclipse/jdt/internal/ui/compare/JavaStructureCreator.java
===================================================================
RCS file: /home/eclipse/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/compare/JavaStructureCreator.java,v
retrieving revision 1.36
diff -u -r1.36 JavaStructureCreator.java
--- ui/org/eclipse/jdt/internal/ui/compare/JavaStructureCreator.java	6 Apr 2004 17:20:20 -0000	1.36
+++ ui/org/eclipse/jdt/internal/ui/compare/JavaStructureCreator.java	12 May 2004 20:01:29 -0000
@@ -35,7 +35,7 @@
 	/**
 	 * Used to bail out from ProblemFactory.
 	 */
-	private static class ParseError extends Error {
+	private static class ParseError extends RuntimeException {
 	}
 	
 	/**
Index: ui/org/eclipse/jdt/ui/actions/OrganizeImportsAction.java
===================================================================
RCS file: /home/eclipse/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/OrganizeImportsAction.java,v
retrieving revision 1.40
diff -u -r1.40 OrganizeImportsAction.java
--- ui/org/eclipse/jdt/ui/actions/OrganizeImportsAction.java	5 May 2004 14:39:08 -0000	1.40
+++ ui/org/eclipse/jdt/ui/actions/OrganizeImportsAction.java	12 May 2004 20:01:35 -0000
@@ -311,7 +311,7 @@
 		
 	}
 	
-	static final class OrganizeImportError extends Error {
+	static final class OrganizeImportError extends RuntimeException {
 	}
 	
 	private void doRunOnMultiple(ICompilationUnit[] cus, MultiStatus status, IProgressMonitor monitor) throws OperationCanceledException {