diff --git a/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleCredentialsProvider.java b/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleCredentialsProvider.java
index f8f8ff9..972ce44 100644
--- a/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleCredentialsProvider.java
+++ b/org.eclipse.jgit.console/src/org/eclipse/jgit/console/ConsoleCredentialsProvider.java
@@ -99,16 +99,16 @@ public boolean get(URIish uri, CredentialItem... items)
 			CredentialItem item = items[i];
 
 			if (item instanceof CredentialItem.StringType)
-				ok = get(uri, (CredentialItem.StringType) item);
+				ok = get((CredentialItem.StringType) item);
 
 			else if (item instanceof CredentialItem.CharArrayType)
-				ok = get(uri, (CredentialItem.CharArrayType) item);
+				ok = get((CredentialItem.CharArrayType) item);
 
 			else if (item instanceof CredentialItem.YesNoType)
-				ok = get(uri, (CredentialItem.YesNoType) item);
+				ok = get((CredentialItem.YesNoType) item);
 
 			else if (item instanceof CredentialItem.InformationalMessage)
-				ok = get(uri, (CredentialItem.InformationalMessage) item);
+				ok = get((CredentialItem.InformationalMessage) item);
 
 			else
 				throw new UnsupportedCredentialItem(uri, item.getPromptText());
@@ -116,7 +116,7 @@ else if (item instanceof CredentialItem.InformationalMessage)
 		return ok;
 	}
 
-	private boolean get(URIish uri, CredentialItem.StringType item) {
+	private boolean get(CredentialItem.StringType item) {
 		if (item.isValueSecure()) {
 			char[] v = cons.readPassword("%s: ", item.getPromptText());
 			if (v != null) {
@@ -136,7 +136,7 @@ private boolean get(URIish uri, CredentialItem.StringType item) {
 		}
 	}
 
-	private boolean get(URIish uri, CredentialItem.CharArrayType item) {
+	private boolean get(CredentialItem.CharArrayType item) {
 		if (item.isValueSecure()) {
 			char[] v = cons.readPassword("%s: ", item.getPromptText());
 			if (v != null) {
@@ -156,13 +156,13 @@ private boolean get(URIish uri, CredentialItem.CharArrayType item) {
 		}
 	}
 
-	private boolean get(URIish uri, CredentialItem.InformationalMessage item) {
+	private boolean get(CredentialItem.InformationalMessage item) {
 		cons.printf("%s\n", item.getPromptText());
 		cons.flush();
 		return true;
 	}
 
-	private boolean get(URIish uri, CredentialItem.YesNoType item) {
+	private boolean get(CredentialItem.YesNoType item) {
 		String r = cons.readLine("%s [%s/%s]? ", item.getPromptText(),
 				ConsoleText.get().answerYes, ConsoleText.get().answerNo);
 		if (r != null) {
diff --git a/org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitServlet.java b/org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitServlet.java
index ef3dc2c..11c3de3 100644
--- a/org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitServlet.java
+++ b/org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitServlet.java
@@ -138,7 +138,6 @@ public void setAsIsFileService(AsIsFileService f) {
 	 *            the factory to construct and configure an {@link UploadPack}
 	 *            session when a fetch or clone is requested by a client.
 	 */
-	@SuppressWarnings("unchecked")
 	public void setUploadPackFactory(UploadPackFactory<HttpServletRequest> f) {
 		gitFilter.setUploadPackFactory(f);
 	}
@@ -158,7 +157,6 @@ public void addUploadPackFilter(Filter filter) {
 	 *            the factory to construct and configure a {@link ReceivePack}
 	 *            session when a push is requested by a client.
 	 */
-	@SuppressWarnings("unchecked")
 	public void setReceivePackFactory(ReceivePackFactory<HttpServletRequest> f) {
 		gitFilter.setReceivePackFactory(f);
 	}
diff --git a/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/RecordingLogger.java b/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/RecordingLogger.java
index 0accfc8..ba7ee97 100644
--- a/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/RecordingLogger.java
+++ b/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/RecordingLogger.java
@@ -184,6 +184,7 @@ public void debug(Throwable thrown) {
 		// Ignore (not relevant to test failures)
 	}
 
+	@SuppressWarnings("unused")
 	public void ignore(Throwable arg0) {
 		// Ignore (not relevant to test failures)
 	}
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Fetch.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Fetch.java
index f100390..beb6e31 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Fetch.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Fetch.java
@@ -65,7 +65,7 @@ class Fetch extends AbstractFetchCommand {
 	private Boolean fsck;
 
 	@Option(name = "--no-fsck")
-	void nofsck(final boolean ignored) {
+	void nofsck(@SuppressWarnings("unused") final boolean ignored) {
 		fsck = Boolean.FALSE;
 	}
 
@@ -79,7 +79,7 @@ void nofsck(final boolean ignored) {
 	private Boolean thin;
 
 	@Option(name = "--no-thin")
-	void nothin(final boolean ignored) {
+	void nothin(@SuppressWarnings("unused") final boolean ignored) {
 		thin = Boolean.FALSE;
 	}
 
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Push.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Push.java
index 83f1ee1..677e733 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Push.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Push.java
@@ -89,7 +89,7 @@ class Push extends TextBuiltin {
 	private boolean thin = Transport.DEFAULT_PUSH_THIN;
 
 	@Option(name = "--no-thin")
-	void nothin(final boolean ignored) {
+	void nothin(@SuppressWarnings("unused") final boolean ignored) {
 		thin = false;
 	}
 
diff --git a/org.eclipse.jgit.storage.dht/src/org/eclipse/jgit/storage/dht/DhtPackParser.java b/org.eclipse.jgit.storage.dht/src/org/eclipse/jgit/storage/dht/DhtPackParser.java
index fdc1436..a397247 100644
--- a/org.eclipse.jgit.storage.dht/src/org/eclipse/jgit/storage/dht/DhtPackParser.java
+++ b/org.eclipse.jgit.storage.dht/src/org/eclipse/jgit/storage/dht/DhtPackParser.java
@@ -1016,11 +1016,11 @@ protected void onInflatedObjectData(PackedObjectInfo obj, int typeCode,
 			break;
 
 		case OBJ_TREE:
-			onTree(info, data);
+			onTree(data);
 			break;
 
 		case OBJ_TAG:
-			onTag(info, data);
+			onTag(data);
 			break;
 		}
 	}
@@ -1045,7 +1045,7 @@ private void onCommit(DhtInfo obj, byte[] raw) throws DhtException {
 		}
 	}
 
-	private void onTree(DhtInfo obj, byte[] data) {
+	private void onTree(byte[] data) {
 		if (isSaveAsCachedPack()) {
 			treeParser.reset(data);
 			while (!treeParser.eof()) {
@@ -1056,7 +1056,7 @@ private void onTree(DhtInfo obj, byte[] data) {
 		}
 	}
 
-	private void onTag(DhtInfo obj, byte[] data) {
+	private void onTag(byte[] data) {
 		if (isSaveAsCachedPack()) {
 			idBuffer.fromString(data, 7); // "object $sha1"
 			lookupByName(idBuffer).setReferenced();
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/RefUpdateTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/RefUpdateTest.java
index 780fde3..cbdf236 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/RefUpdateTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/RefUpdateTest.java
@@ -616,7 +616,7 @@ public void testRenameBranchHasPreviousLog() throws IOException {
 		ObjectId oldHead = db.resolve(Constants.HEAD);
 		assertFalse("precondition for this test, branch b != HEAD", rb
 				.equals(oldHead));
-		writeReflog(db, rb, rb, "Just a message", "refs/heads/b");
+		writeReflog(db, rb, "Just a message", "refs/heads/b");
 		assertTrue("log on old branch", new File(db.getDirectory(),
 				"logs/refs/heads/b").exists());
 		RefRename renameRef = db.renameRef("refs/heads/b",
@@ -640,7 +640,7 @@ public void testRenameCurrentBranch() throws IOException {
 		writeSymref(Constants.HEAD, "refs/heads/b");
 		ObjectId oldHead = db.resolve(Constants.HEAD);
 		assertTrue("internal test condition, b == HEAD", rb.equals(oldHead));
-		writeReflog(db, rb, rb, "Just a message", "refs/heads/b");
+		writeReflog(db, rb, "Just a message", "refs/heads/b");
 		assertTrue("log on old branch", new File(db.getDirectory(),
 				"logs/refs/heads/b").exists());
 		RefRename renameRef = db.renameRef("refs/heads/b",
@@ -669,7 +669,7 @@ public void testRenameBranchAlsoInPack() throws IOException {
 		Result update = updateRef.update();
 		assertEquals("internal check new ref is loose", Result.FORCED, update);
 		assertEquals(Ref.Storage.LOOSE, db.getRef("refs/heads/b").getStorage());
-		writeReflog(db, rb, rb, "Just a message", "refs/heads/b");
+		writeReflog(db, rb, "Just a message", "refs/heads/b");
 		assertTrue("log on old branch", new File(db.getDirectory(),
 				"logs/refs/heads/b").exists());
 		RefRename renameRef = db.renameRef("refs/heads/b",
@@ -699,8 +699,7 @@ public void tryRenameWhenLocked(String toLock, String fromName,
 		writeSymref(Constants.HEAD, headPointsTo);
 		ObjectId oldfromId = db.resolve(fromName);
 		ObjectId oldHeadId = db.resolve(Constants.HEAD);
-		writeReflog(db, oldfromId, oldfromId, "Just a message",
-				fromName);
+		writeReflog(db, oldfromId, "Just a message", fromName);
 		List<org.eclipse.jgit.storage.file.ReflogEntry> oldFromLog = db
 				.getReflogReader(fromName).getReverseEntries();
 		List<org.eclipse.jgit.storage.file.ReflogEntry> oldHeadLog = oldHeadId != null ? db
@@ -806,7 +805,7 @@ public void testRenameRefNameColission1avoided() throws IOException {
 		assertEquals(Result.FAST_FORWARD, updateRef.update());
 		ObjectId oldHead = db.resolve(Constants.HEAD);
 		assertTrue(rb.equals(oldHead)); // assumption for this test
-		writeReflog(db, rb, rb, "Just a message", "refs/heads/a");
+		writeReflog(db, rb, "Just a message", "refs/heads/a");
 		assertTrue("internal check, we have a log", new File(db.getDirectory(),
 				"logs/refs/heads/a").exists());
 
@@ -840,8 +839,7 @@ public void testRenameRefNameColission2avoided() throws IOException {
 		assertEquals(Result.FORCED, updateRef.update());
 		ObjectId oldHead = db.resolve(Constants.HEAD);
 		assertTrue(rb.equals(oldHead)); // assumption for this test
-		writeReflog(db, rb, rb, "Just a message",
-				"refs/heads/prefix/a");
+		writeReflog(db, rb, "Just a message", "refs/heads/prefix/a");
 		assertTrue("internal check, we have a log", new File(db.getDirectory(),
 				"logs/refs/heads/prefix/a").exists());
 
@@ -864,8 +862,8 @@ public void testRenameRefNameColission2avoided() throws IOException {
 				"HEAD").getReverseEntries().get(0).getComment());
 	}
 
-	private void writeReflog(Repository db, ObjectId oldId, ObjectId newId,
-			String msg, String refName) throws IOException {
+	private void writeReflog(Repository db, ObjectId newId, String msg,
+			String refName) throws IOException {
 		RefDirectory refs = (RefDirectory) db.getRefDatabase();
 		RefDirectoryUpdate update = refs.newUpdate(refName, true);
 		update.setNewObjectId(newId);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsBlockCache.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsBlockCache.java
index ba704e5..18b50e0 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsBlockCache.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsBlockCache.java
@@ -524,7 +524,6 @@ boolean readAhead(ReadableChannel rc, DfsPackKey key, int size, long pos,
 		return true;
 	}
 
-	@SuppressWarnings("unchecked")
 	private <T> T scan(HashEntry n, DfsPackKey pack, long position) {
 		Ref<T> r = scanRef(n, pack, position);
 		return r != null ? r.get() : null;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsReader.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsReader.java
index 621480b..0ba846a 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsReader.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsReader.java
@@ -541,7 +541,6 @@ public void writeObjects(PackOutputStream out, List<ObjectToPack> list)
 		}
 	}
 
-	@SuppressWarnings("unchecked")
 	public Collection<CachedPack> getCachedPacks() throws IOException {
 		DfsPackFile[] packList = db.getPacks();
 		List<CachedPack> cached = new ArrayList<CachedPack>(packList.length);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsRepositoryBuilder.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsRepositoryBuilder.java
index a41779f..5e526b4 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsRepositoryBuilder.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/DfsRepositoryBuilder.java
@@ -120,7 +120,6 @@ public B setup() throws IllegalArgumentException, IOException {
 	 *             the repository could not be accessed to configure the rest of
 	 *             the builder's parameters.
 	 */
-	@SuppressWarnings("unchecked")
 	@Override
 	public abstract R build() throws IOException;