diff --git a/org.eclipse.jgit.lfs.server/src/org/eclipse/jgit/lfs/server/TransferHandler.java b/org.eclipse.jgit.lfs.server/src/org/eclipse/jgit/lfs/server/TransferHandler.java
index 4fea92e11..6c36661c3 100644
--- a/org.eclipse.jgit.lfs.server/src/org/eclipse/jgit/lfs/server/TransferHandler.java
+++ b/org.eclipse.jgit.lfs.server/src/org/eclipse/jgit/lfs/server/TransferHandler.java
@@ -84,7 +84,7 @@ abstract class TransferHandler {
 		@Override
 		Body process() throws IOException {
 			Response.Body body = new Response.Body();
-			if (objects.size() > 0) {
+			if (!objects.isEmpty()) {
 				body.objects = new ArrayList<>();
 				for (LfsObject o : objects) {
 					addObjectInfo(body, o);
@@ -122,7 +122,7 @@ abstract class TransferHandler {
 		@Override
 		Body process() throws IOException {
 			Response.Body body = new Response.Body();
-			if (objects.size() > 0) {
+			if (!objects.isEmpty()) {
 				body.objects = new ArrayList<>();
 				for (LfsObject o : objects) {
 					addObjectInfo(body, o);
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Checkout.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Checkout.java
index 7e1737f87..3df37e51c 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Checkout.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Checkout.java
@@ -96,7 +96,7 @@ class Checkout extends TextBuiltin {
 		try (Git git = new Git(db)) {
 			CheckoutCommand command = git.checkout()
 					.setProgressMonitor(new TextProgressMonitor(errw));
-			if (paths.size() > 0) {
+			if (!paths.isEmpty()) {
 				command.setStartPoint(name);
 				if (paths.size() == 1 && paths.get(0).equals(".")) { //$NON-NLS-1$
 					command.setAllPaths(true);
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsFiles.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsFiles.java
index ef2584497..e3ed30dc4 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsFiles.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsFiles.java
@@ -85,7 +85,7 @@ class LsFiles extends TextBuiltin {
 			CanonicalTreeParser p = new CanonicalTreeParser();
 			p.reset(rw.getObjectReader(), c.getTree());
 			tw.reset(); // drop the first empty tree, which we do not need here
-			if (paths.size() > 0) {
+			if (!paths.isEmpty()) {
 				tw.setFilter(PathFilterGroup.createFromStrings(paths));
 			}
 			tw.addTree(p);
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsTree.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsTree.java
index 2a2bb7cc9..19f2d7ae4 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsTree.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/LsTree.java
@@ -76,7 +76,7 @@ class LsTree extends TextBuiltin {
 	protected void run() {
 		try (TreeWalk walk = new TreeWalk(db)) {
 			walk.reset(); // drop the first empty tree, which we do not need here
-			if (paths.size() > 0) {
+			if (!paths.isEmpty()) {
 				walk.setFilter(PathFilterGroup.createFromStrings(paths));
 			}
 			walk.setRecursive(recursive);
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Reset.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Reset.java
index b3e81c6d6..e1a290731 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Reset.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Reset.java
@@ -80,7 +80,7 @@ class Reset extends TextBuiltin {
 		try (Git git = new Git(db)) {
 			ResetCommand command = git.reset();
 			command.setRef(commit);
-			if (paths.size() > 0) {
+			if (!paths.isEmpty()) {
 				for (String path : paths) {
 					command.addPath(path);
 				}
diff --git a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Status.java b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Status.java
index 8b187587b..c3887fe9c 100644
--- a/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Status.java
+++ b/org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Status.java
@@ -93,7 +93,7 @@ class Status extends TextBuiltin {
 	protected void run() {
 		try (Git git = new Git(db)) {
 			StatusCommand statusCommand = git.status();
-			if (filterPaths != null && filterPaths.size() > 0) {
+			if (filterPaths != null) {
 				for (String path : filterPaths) {
 					statusCommand.addPath(path);
 				}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CleanCommandTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CleanCommandTest.java
index 4eeaf4d6e..c9852e8b8 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CleanCommandTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CleanCommandTest.java
@@ -98,7 +98,7 @@ public class CleanCommandTest extends RepositoryTestCase {
 		StatusCommand command = git.status();
 		Status status = command.call();
 		Set<String> files = status.getUntracked();
-		assertTrue(files.size() > 0);
+		assertFalse(files.isEmpty());
 
 		// run clean
 		Set<String> cleanedFiles = git.clean().call();
@@ -120,7 +120,7 @@ public class CleanCommandTest extends RepositoryTestCase {
 		StatusCommand command = git.status();
 		Status status = command.call();
 		Set<String> files = status.getUntracked();
-		assertTrue(files.size() > 0);
+		assertFalse(files.isEmpty());
 
 		// run clean
 		Set<String> cleanedFiles = git.clean().setCleanDirectories(true).call();
@@ -143,7 +143,7 @@ public class CleanCommandTest extends RepositoryTestCase {
 		StatusCommand command = git.status();
 		Status status = command.call();
 		Set<String> files = status.getUntracked();
-		assertTrue(files.size() > 0);
+		assertFalse(files.isEmpty());
 
 		// run clean with setPaths
 		Set<String> paths = new TreeSet<>();
@@ -164,7 +164,7 @@ public class CleanCommandTest extends RepositoryTestCase {
 		StatusCommand command = git.status();
 		Status status = command.call();
 		Set<String> files = status.getUntracked();
-		assertTrue(files.size() > 0);
+		assertFalse(files.isEmpty());
 
 		// run clean
 		Set<String> cleanedFiles = git.clean().setDryRun(true).call();
@@ -186,7 +186,7 @@ public class CleanCommandTest extends RepositoryTestCase {
 		StatusCommand command = git.status();
 		Status status = command.call();
 		Set<String> files = status.getUntracked();
-		assertTrue(files.size() > 0);
+		assertFalse(files.isEmpty());
 
 		// run clean
 		Set<String> cleanedFiles = git.clean().setDryRun(true)
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/api/LogCommand.java b/org.eclipse.jgit/src/org/eclipse/jgit/api/LogCommand.java
index 9b8016ce2..66de8ae13 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/api/LogCommand.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/api/LogCommand.java
@@ -133,7 +133,7 @@ public class LogCommand extends GitCommand<Iterable<RevCommit>> {
 	@Override
 	public Iterable<RevCommit> call() throws GitAPIException, NoHeadException {
 		checkCallable();
-		if (pathFilters.size() > 0)
+		if (!pathFilters.isEmpty())
 			walk.setTreeFilter(AndTreeFilter.create(
 					PathFilterGroup.create(pathFilters), TreeFilter.ANY_DIFF));
 		if (skip > -1 && maxCount > -1)
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/api/RebaseCommand.java b/org.eclipse.jgit/src/org/eclipse/jgit/api/RebaseCommand.java
index cdd1b80bb..593874c12 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/api/RebaseCommand.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/api/RebaseCommand.java
@@ -490,7 +490,7 @@ public class RebaseCommand extends GitCommand<RebaseResult> {
 			resetSoftToParent();
 			List<RebaseTodoLine> steps = repo.readRebaseTodo(
 					rebaseState.getPath(GIT_REBASE_TODO), false);
-			RebaseTodoLine nextStep = steps.size() > 0 ? steps.get(0) : null;
+			RebaseTodoLine nextStep = steps.isEmpty() ? null : steps.get(0);
 			File messageFixupFile = rebaseState.getFile(MESSAGE_FIXUP);
 			File messageSquashFile = rebaseState.getFile(MESSAGE_SQUASH);
 			if (isSquash && messageFixupFile.exists())
@@ -1083,7 +1083,7 @@ public class RebaseCommand extends GitCommand<RebaseResult> {
 
 		repo.writeRebaseTodoFile(rebaseState.getPath(GIT_REBASE_TODO),
 				todoLines, false);
-		if (poppedLines.size() > 0) {
+		if (!poppedLines.isEmpty()) {
 			repo.writeRebaseTodoFile(rebaseState.getPath(DONE), poppedLines,
 					true);
 		}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java b/org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java
index b69327a9b..0c3d3fec2 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java
@@ -1190,7 +1190,7 @@ public class ResolveMerger extends ThreeWayMerger {
 	 *         otherwise
 	 */
 	public boolean failed() {
-		return failingPaths.size() > 0;
+		return !failingPaths.isEmpty();
 	}
 
 	/**
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleWriter.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleWriter.java
index a09b1ff1d..d1db51eca 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleWriter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleWriter.java
@@ -227,7 +227,7 @@ public class BundleWriter {
 				exc.add(r.getId());
 			packWriter.setIndexDisabled(true);
 			packWriter.setDeltaBaseAsOffset(true);
-			packWriter.setThin(exc.size() > 0);
+			packWriter.setThin(!exc.isEmpty());
 			packWriter.setReuseValidatingObjects(false);
 			if (exc.isEmpty()) {
 				packWriter.setTagTargets(tagTargets);