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Code Issues Projects Releases Wiki Activity

Remove unnecessary unmodifiable collection wrappers.

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This commit is contained in:
akwizgran
2016-11-16 16:19:47 +00:00
parent 68abf8ba1a
commit f4c26d9cc7
16 changed files with 68 additions and 56 deletions
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3
briar-android/src/org/briarproject/android/util/AndroidUtils.java
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@@ -31,7 +31,6 @@ import java.io.File;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Arrays; import java.util.Arrays;
import java.util.Collection; import java.util.Collection;
import java.util.Collections;
import java.util.List; import java.util.List;
import static android.content.Context.MODE_PRIVATE; import static android.content.Context.MODE_PRIVATE;
@@ -63,7 +62,7 @@ public class AndroidUtils {
abis.add(Build.CPU_ABI); abis.add(Build.CPU_ABI);
if (Build.CPU_ABI2 != null) abis.add(Build.CPU_ABI2); if (Build.CPU_ABI2 != null) abis.add(Build.CPU_ABI2);
} }
return Collections.unmodifiableList(abis); return abis;
} }
public static void setError(TextInputLayout til, String error, public static void setError(TextInputLayout til, String error,

8
briar-android/src/org/briarproject/plugins/droidtooth/DroidtoothPlugin.java
View File

@@ -40,6 +40,7 @@ import java.util.Map.Entry;
import java.util.UUID; import java.util.UUID;
import java.util.concurrent.Callable; import java.util.concurrent.Callable;
import java.util.concurrent.CompletionService; import java.util.concurrent.CompletionService;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.CountDownLatch; import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException; import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor; import java.util.concurrent.Executor;
@@ -578,7 +579,7 @@ class DroidtoothPlugin implements DuplexPlugin {
private static class DiscoveryReceiver extends BroadcastReceiver { private static class DiscoveryReceiver extends BroadcastReceiver {
private final CountDownLatch finished = new CountDownLatch(1); private final CountDownLatch finished = new CountDownLatch(1);
private final List<String> addresses = new ArrayList<>(); private final List<String> addresses = new CopyOnWriteArrayList<>();
@Override @Override
public void onReceive(Context ctx, Intent intent) { public void onReceive(Context ctx, Intent intent) {
@@ -598,8 +599,9 @@ class DroidtoothPlugin implements DuplexPlugin {
private List<String> waitForAddresses() throws InterruptedException { private List<String> waitForAddresses() throws InterruptedException {
finished.await(); finished.await();
Collections.shuffle(addresses); List<String> shuffled = new ArrayList<>(addresses);
return Collections.unmodifiableList(addresses); Collections.shuffle(shuffled);
return shuffled;
} }
} }

4
briar-core/src/org/briarproject/blogs/BlogManagerImpl.java
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@@ -396,7 +396,7 @@ class BlogManagerImpl extends BdfIncomingMessageHook implements BlogManager,
blogs.add(b); blogs.add(b);
} }
} }
return Collections.unmodifiableList(blogs); return blogs;
} }
@Override @Override
@@ -419,7 +419,7 @@ class BlogManagerImpl extends BdfIncomingMessageHook implements BlogManager,
} finally { } finally {
db.endTransaction(txn); db.endTransaction(txn);
} }
return Collections.unmodifiableList(blogs); return blogs;
} catch (FormatException e) { } catch (FormatException e) {
throw new DbException(e); throw new DbException(e);
} }

5
briar-core/src/org/briarproject/clients/ClientHelperImpl.java
View File

@@ -29,7 +29,6 @@ import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream; import java.io.ByteArrayOutputStream;
import java.io.IOException; import java.io.IOException;
import java.security.GeneralSecurityException; import java.security.GeneralSecurityException;
import java.util.Collections;
import java.util.HashMap; import java.util.HashMap;
import java.util.Map; import java.util.Map;
import java.util.Map.Entry; import java.util.Map.Entry;
@@ -208,7 +207,7 @@ class ClientHelperImpl implements ClientHelper {
new HashMap<MessageId, BdfDictionary>(raw.size()); new HashMap<MessageId, BdfDictionary>(raw.size());
for (Entry<MessageId, Metadata> e : raw.entrySet()) for (Entry<MessageId, Metadata> e : raw.entrySet())
parsed.put(e.getKey(), metadataParser.parse(e.getValue())); parsed.put(e.getKey(), metadataParser.parse(e.getValue()));
return Collections.unmodifiableMap(parsed); return parsed;
} }
@Override @Override
@@ -236,7 +235,7 @@ class ClientHelperImpl implements ClientHelper {
new HashMap<MessageId, BdfDictionary>(raw.size()); new HashMap<MessageId, BdfDictionary>(raw.size());
for (Entry<MessageId, Metadata> e : raw.entrySet()) for (Entry<MessageId, Metadata> e : raw.entrySet())
parsed.put(e.getKey(), metadataParser.parse(e.getValue())); parsed.put(e.getKey(), metadataParser.parse(e.getValue()));
return Collections.unmodifiableMap(parsed); return parsed;
} }
@Override @Override

2
briar-core/src/org/briarproject/clients/MessageTreeImpl.java
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@@ -103,7 +103,7 @@ public class MessageTreeImpl<T extends MessageTree.MessageNode>
for (T root : roots) { for (T root : roots) {
traverse(orderedList, root, 0); traverse(orderedList, root, 0);
} }
return Collections.unmodifiableList(orderedList); return orderedList;
} }
} }

4
briar-core/src/org/briarproject/db/DatabaseComponentImpl.java
View File

@@ -329,7 +329,7 @@ class DatabaseComponentImpl<T> implements DatabaseComponent {
if (ids.isEmpty()) return null; if (ids.isEmpty()) return null;
db.lowerRequestedFlag(txn, c, ids); db.lowerRequestedFlag(txn, c, ids);
transaction.attach(new MessagesSentEvent(c, ids)); transaction.attach(new MessagesSentEvent(c, ids));
return Collections.unmodifiableList(messages); return messages;
} }
@Nullable @Nullable
@@ -379,7 +379,7 @@ class DatabaseComponentImpl<T> implements DatabaseComponent {
if (ids.isEmpty()) return null; if (ids.isEmpty()) return null;
db.lowerRequestedFlag(txn, c, ids); db.lowerRequestedFlag(txn, c, ids);
transaction.attach(new MessagesSentEvent(c, ids)); transaction.attach(new MessagesSentEvent(c, ids));
return Collections.unmodifiableList(messages); return messages;
} }
@Override @Override

2
briar-core/src/org/briarproject/forum/ForumManagerImpl.java
View File

@@ -199,7 +199,7 @@ class ForumManagerImpl extends BdfIncomingMessageHook implements ForumManager {
} }
List<Forum> forums = new ArrayList<Forum>(); List<Forum> forums = new ArrayList<Forum>();
for (Group g : groups) forums.add(parseForum(g)); for (Group g : groups) forums.add(parseForum(g));
return Collections.unmodifiableList(forums); return forums;
} catch (FormatException e) { } catch (FormatException e) {
throw new DbException(e); throw new DbException(e);
} }

7
briar-core/src/org/briarproject/plugins/ConnectionRegistryImpl.java
View File

@@ -42,6 +42,7 @@ class ConnectionRegistryImpl implements ConnectionRegistry {
contactCounts = new HashMap<ContactId, Integer>(); contactCounts = new HashMap<ContactId, Integer>();
} }
@Override
public void registerConnection(ContactId c, TransportId t, public void registerConnection(ContactId c, TransportId t,
boolean incoming) { boolean incoming) {
if (LOG.isLoggable(INFO)) { if (LOG.isLoggable(INFO)) {
@@ -76,6 +77,7 @@ class ConnectionRegistryImpl implements ConnectionRegistry {
} }
} }
@Override
public void unregisterConnection(ContactId c, TransportId t, public void unregisterConnection(ContactId c, TransportId t,
boolean incoming) { boolean incoming) {
if (LOG.isLoggable(INFO)) { if (LOG.isLoggable(INFO)) {
@@ -112,6 +114,7 @@ class ConnectionRegistryImpl implements ConnectionRegistry {
} }
} }
@Override
public Collection<ContactId> getConnectedContacts(TransportId t) { public Collection<ContactId> getConnectedContacts(TransportId t) {
lock.lock(); lock.lock();
try { try {
@@ -120,12 +123,13 @@ class ConnectionRegistryImpl implements ConnectionRegistry {
List<ContactId> ids = new ArrayList<ContactId>(m.keySet()); List<ContactId> ids = new ArrayList<ContactId>(m.keySet());
if (LOG.isLoggable(INFO)) if (LOG.isLoggable(INFO))
LOG.info(ids.size() + " contacts connected"); LOG.info(ids.size() + " contacts connected");
return Collections.unmodifiableList(ids); return ids;
} finally { } finally {
lock.unlock(); lock.unlock();
} }
} }
@Override
public boolean isConnected(ContactId c, TransportId t) { public boolean isConnected(ContactId c, TransportId t) {
lock.lock(); lock.lock();
try { try {
@@ -136,6 +140,7 @@ class ConnectionRegistryImpl implements ConnectionRegistry {
} }
} }
@Override
public boolean isConnected(ContactId c) { public boolean isConnected(ContactId c) {
lock.lock(); lock.lock();
try { try {

8
briar-core/src/org/briarproject/plugins/PluginManagerImpl.java
View File

@@ -156,12 +156,12 @@ class PluginManagerImpl implements PluginManager, Service {
@Override @Override
public Collection<SimplexPlugin> getSimplexPlugins() { public Collection<SimplexPlugin> getSimplexPlugins() {
return Collections.unmodifiableList(simplexPlugins); return new ArrayList<SimplexPlugin>(simplexPlugins);
} }
@Override @Override
public Collection<DuplexPlugin> getDuplexPlugins() { public Collection<DuplexPlugin> getDuplexPlugins() {
return Collections.unmodifiableList(duplexPlugins); return new ArrayList<DuplexPlugin>(duplexPlugins);
} }
@Override @Override
@@ -169,7 +169,7 @@ class PluginManagerImpl implements PluginManager, Service {
List<DuplexPlugin> supported = new ArrayList<DuplexPlugin>(); List<DuplexPlugin> supported = new ArrayList<DuplexPlugin>();
for (DuplexPlugin d : duplexPlugins) for (DuplexPlugin d : duplexPlugins)
if (d.supportsInvitations()) supported.add(d); if (d.supportsInvitations()) supported.add(d);
return Collections.unmodifiableList(supported); return supported;
} }
@Override @Override
@@ -177,7 +177,7 @@ class PluginManagerImpl implements PluginManager, Service {
List<DuplexPlugin> supported = new ArrayList<DuplexPlugin>(); List<DuplexPlugin> supported = new ArrayList<DuplexPlugin>();
for (DuplexPlugin d : duplexPlugins) for (DuplexPlugin d : duplexPlugins)
if (d.supportsKeyAgreement()) supported.add(d); if (d.supportsKeyAgreement()) supported.add(d);
return Collections.unmodifiableList(supported); return supported;
} }
private class PluginStarter implements Runnable { private class PluginStarter implements Runnable {

5
briar-core/src/org/briarproject/properties/TransportPropertyManagerImpl.java
View File

@@ -22,7 +22,6 @@ import org.briarproject.api.sync.Message;
import org.briarproject.api.sync.MessageId; import org.briarproject.api.sync.MessageId;
import org.briarproject.api.system.Clock; import org.briarproject.api.system.Clock;
import java.util.Collections;
import java.util.HashMap; import java.util.HashMap;
import java.util.Map; import java.util.Map;
import java.util.Map.Entry; import java.util.Map.Entry;
@@ -101,7 +100,7 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
} finally { } finally {
db.endTransaction(txn); db.endTransaction(txn);
} }
return Collections.unmodifiableMap(local); return local;
} }
@Override @Override
@@ -176,7 +175,7 @@ class TransportPropertyManagerImpl implements TransportPropertyManager,
} finally { } finally {
db.endTransaction(txn); db.endTransaction(txn);
} }
return Collections.unmodifiableMap(remote); return remote;
} catch (FormatException e) { } catch (FormatException e) {
throw new DbException(e); throw new DbException(e);
} }

10
briar-core/src/org/briarproject/sharing/SharingManagerImpl.java
View File

@@ -46,7 +46,6 @@ import java.security.SecureRandom;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Arrays; import java.util.Arrays;
import java.util.Collection; import java.util.Collection;
import java.util.Collections;
import java.util.HashMap; import java.util.HashMap;
import java.util.HashSet; import java.util.HashSet;
import java.util.List; import java.util.List;
@@ -443,7 +442,8 @@ abstract class SharingManagerImpl<S extends Shareable, I extends Invitation, IS
@Override @Override
public Collection<SharingInvitationItem> getInvitations() throws DbException { public Collection<SharingInvitationItem> getInvitations() throws DbException {
List<SharingInvitationItem> invitations = new ArrayList<SharingInvitationItem>(); List<SharingInvitationItem> invitations =
new ArrayList<SharingInvitationItem>();
Transaction txn = db.startTransaction(true); Transaction txn = db.startTransaction(true);
try { try {
Set<S> shareables = new HashSet<S>(); Set<S> shareables = new HashSet<S>();
@@ -474,7 +474,7 @@ abstract class SharingManagerImpl<S extends Shareable, I extends Invitation, IS
invitations.add(invitation); invitations.add(invitation);
} }
db.commitTransaction(txn); db.commitTransaction(txn);
return Collections.unmodifiableCollection(invitations); return invitations;
} catch (FormatException e) { } catch (FormatException e) {
throw new DbException(e); throw new DbException(e);
} finally { } finally {
@@ -523,7 +523,7 @@ abstract class SharingManagerImpl<S extends Shareable, I extends Invitation, IS
} finally { } finally {
db.endTransaction(txn); db.endTransaction(txn);
} }
return Collections.unmodifiableList(subscribers); return subscribers;
} }
private List<Contact> getSharedBy(Transaction txn, GroupId g) private List<Contact> getSharedBy(Transaction txn, GroupId g)
@@ -556,7 +556,7 @@ abstract class SharingManagerImpl<S extends Shareable, I extends Invitation, IS
} finally { } finally {
db.endTransaction(txn); db.endTransaction(txn);
} }
return Collections.unmodifiableList(shared); return shared;
} catch (FormatException e) { } catch (FormatException e) {
throw new DbException(e); throw new DbException(e);
} }

16
briar-core/src/org/briarproject/sync/PacketReaderImpl.java
View File

@@ -15,7 +15,6 @@ import org.briarproject.util.ByteUtils;
import java.io.IOException; import java.io.IOException;
import java.io.InputStream; import java.io.InputStream;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Collections;
import java.util.List; import java.util.List;
import static org.briarproject.api.sync.PacketTypes.ACK; import static org.briarproject.api.sync.PacketTypes.ACK;
@@ -74,19 +73,22 @@ class PacketReaderImpl implements PacketReader {
state = State.BUFFER_FULL; state = State.BUFFER_FULL;
} }
@Override
public boolean eof() throws IOException { public boolean eof() throws IOException {
if (state == State.BUFFER_EMPTY) readPacket(); if (state == State.BUFFER_EMPTY) readPacket();
if (state == State.BUFFER_EMPTY) throw new IllegalStateException(); if (state == State.BUFFER_EMPTY) throw new IllegalStateException();
return state == State.EOF; return state == State.EOF;
} }
@Override
public boolean hasAck() throws IOException { public boolean hasAck() throws IOException {
return !eof() && header[1] == ACK; return !eof() && header[1] == ACK;
} }
@Override
public Ack readAck() throws IOException { public Ack readAck() throws IOException {
if (!hasAck()) throw new FormatException(); if (!hasAck()) throw new FormatException();
return new Ack(Collections.unmodifiableList(readMessageIds())); return new Ack(readMessageIds());
} }
private List<MessageId> readMessageIds() throws IOException { private List<MessageId> readMessageIds() throws IOException {
@@ -102,10 +104,12 @@ class PacketReaderImpl implements PacketReader {
return ids; return ids;
} }
@Override
public boolean hasMessage() throws IOException { public boolean hasMessage() throws IOException {
return !eof() && header[1] == MESSAGE; return !eof() && header[1] == MESSAGE;
} }
@Override
public Message readMessage() throws IOException { public Message readMessage() throws IOException {
if (!hasMessage()) throw new FormatException(); if (!hasMessage()) throw new FormatException();
if (payloadLength <= MESSAGE_HEADER_LENGTH) throw new FormatException(); if (payloadLength <= MESSAGE_HEADER_LENGTH) throw new FormatException();
@@ -125,21 +129,25 @@ class PacketReaderImpl implements PacketReader {
return new Message(messageId, groupId, timestamp, raw); return new Message(messageId, groupId, timestamp, raw);
} }
@Override
public boolean hasOffer() throws IOException { public boolean hasOffer() throws IOException {
return !eof() && header[1] == OFFER; return !eof() && header[1] == OFFER;
} }
@Override
public Offer readOffer() throws IOException { public Offer readOffer() throws IOException {
if (!hasOffer()) throw new FormatException(); if (!hasOffer()) throw new FormatException();
return new Offer(Collections.unmodifiableList(readMessageIds())); return new Offer(readMessageIds());
} }
@Override
public boolean hasRequest() throws IOException { public boolean hasRequest() throws IOException {
return !eof() && header[1] == REQUEST; return !eof() && header[1] == REQUEST;
} }
@Override
public Request readRequest() throws IOException { public Request readRequest() throws IOException {
if (!hasRequest()) throw new FormatException(); if (!hasRequest()) throw new FormatException();
return new Request(Collections.unmodifiableList(readMessageIds())); return new Request(readMessageIds());
} }
} }

31
briar-desktop/src/org/briarproject/lifecycle/WindowsShutdownManagerImpl.java
View File

@@ -1,19 +1,5 @@
package org.briarproject.lifecycle; package org.briarproject.lifecycle;
import static com.sun.jna.Library.OPTION_FUNCTION_MAPPER;
import static com.sun.jna.Library.OPTION_TYPE_MAPPER;
import static java.util.logging.Level.WARNING;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.logging.Logger;
import org.briarproject.util.OsUtils;
import com.sun.jna.Native; import com.sun.jna.Native;
import com.sun.jna.Pointer; import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.WinDef.HINSTANCE; import com.sun.jna.platform.win32.WinDef.HINSTANCE;
@@ -28,6 +14,20 @@ import com.sun.jna.win32.StdCallLibrary.StdCallCallback;
import com.sun.jna.win32.W32APIFunctionMapper; import com.sun.jna.win32.W32APIFunctionMapper;
import com.sun.jna.win32.W32APITypeMapper; import com.sun.jna.win32.W32APITypeMapper;
import org.briarproject.util.OsUtils;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.logging.Logger;
import static com.sun.jna.Library.OPTION_FUNCTION_MAPPER;
import static com.sun.jna.Library.OPTION_TYPE_MAPPER;
import static java.util.logging.Level.WARNING;
class WindowsShutdownManagerImpl extends ShutdownManagerImpl { class WindowsShutdownManagerImpl extends ShutdownManagerImpl {
private static final Logger LOG = private static final Logger LOG =
@@ -44,7 +44,7 @@ class WindowsShutdownManagerImpl extends ShutdownManagerImpl {
WindowsShutdownManagerImpl() { WindowsShutdownManagerImpl() {
// Use the Unicode versions of Win32 API calls // Use the Unicode versions of Win32 API calls
Map<String, Object> m = new HashMap<String, Object>(); Map<String, Object> m = new HashMap<>();
m.put(OPTION_TYPE_MAPPER, W32APITypeMapper.UNICODE); m.put(OPTION_TYPE_MAPPER, W32APITypeMapper.UNICODE);
m.put(OPTION_FUNCTION_MAPPER, W32APIFunctionMapper.UNICODE); m.put(OPTION_FUNCTION_MAPPER, W32APIFunctionMapper.UNICODE);
options = Collections.unmodifiableMap(m); options = Collections.unmodifiableMap(m);
@@ -112,6 +112,7 @@ class WindowsShutdownManagerImpl extends ShutdownManagerImpl {
User32.class, options); User32.class, options);
// Create a callback to handle the WM_QUERYENDSESSION message // Create a callback to handle the WM_QUERYENDSESSION message
WindowProc proc = new WindowProc() { WindowProc proc = new WindowProc() {
@Override
public LRESULT callback(HWND hwnd, int msg, WPARAM wp, public LRESULT callback(HWND hwnd, int msg, WPARAM wp,
LPARAM lp) { LPARAM lp) {
if (msg == WM_QUERYENDSESSION) { if (msg == WM_QUERYENDSESSION) {

3
briar-desktop/src/org/briarproject/plugins/file/RemovableDrivePlugin.java
View File

@@ -9,7 +9,6 @@ import java.io.File;
import java.io.IOException; import java.io.IOException;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Collection; import java.util.Collection;
import java.util.Collections;
import java.util.List; import java.util.List;
import java.util.concurrent.Executor; import java.util.concurrent.Executor;
import java.util.logging.Logger; import java.util.logging.Logger;
@@ -114,7 +113,7 @@ implements RemovableDriveMonitor.Callback {
} catch (IOException e) { } catch (IOException e) {
if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e); if (LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
} }
return Collections.unmodifiableList(matches); return matches;
} }
@Override @Override

6
briar-desktop/src/org/briarproject/plugins/file/UnixRemovableDriveFinder.java
View File

@@ -3,7 +3,6 @@ package org.briarproject.plugins.file;
import java.io.File; import java.io.File;
import java.io.IOException; import java.io.IOException;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Collections;
import java.util.List; import java.util.List;
import java.util.Scanner; import java.util.Scanner;
@@ -13,8 +12,9 @@ abstract class UnixRemovableDriveFinder implements RemovableDriveFinder {
protected abstract String parseMountPoint(String line); protected abstract String parseMountPoint(String line);
protected abstract boolean isRemovableDriveMountPoint(String path); protected abstract boolean isRemovableDriveMountPoint(String path);
@Override
public List<File> findRemovableDrives() throws IOException { public List<File> findRemovableDrives() throws IOException {
List<File> drives = new ArrayList<File>(); List<File> drives = new ArrayList<>();
Process p = new ProcessBuilder(getMountCommand()).start(); Process p = new ProcessBuilder(getMountCommand()).start();
Scanner s = new Scanner(p.getInputStream(), "UTF-8"); Scanner s = new Scanner(p.getInputStream(), "UTF-8");
try { try {
@@ -35,6 +35,6 @@ abstract class UnixRemovableDriveFinder implements RemovableDriveFinder {
} finally { } finally {
s.close(); s.close();
} }
return Collections.unmodifiableList(drives); return drives;
} }
} }

10
briar-desktop/src/org/briarproject/plugins/file/WindowsRemovableDriveFinder.java
View File

@@ -1,23 +1,23 @@
package org.briarproject.plugins.file; package org.briarproject.plugins.file;
import com.sun.jna.platform.win32.Kernel32;
import java.io.File; import java.io.File;
import java.io.IOException; import java.io.IOException;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Collection; import java.util.Collection;
import java.util.Collections;
import java.util.List; import java.util.List;
import com.sun.jna.platform.win32.Kernel32;
class WindowsRemovableDriveFinder implements RemovableDriveFinder { class WindowsRemovableDriveFinder implements RemovableDriveFinder {
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa364939.aspx // http://msdn.microsoft.com/en-us/library/windows/desktop/aa364939.aspx
private static final int DRIVE_REMOVABLE = 2; private static final int DRIVE_REMOVABLE = 2;
@Override
public Collection<File> findRemovableDrives() throws IOException { public Collection<File> findRemovableDrives() throws IOException {
File[] roots = File.listRoots(); File[] roots = File.listRoots();
if (roots == null) throw new IOException(); if (roots == null) throw new IOException();
List<File> drives = new ArrayList<File>(); List<File> drives = new ArrayList<>();
for (File root : roots) { for (File root : roots) {
try { try {
int type = Kernel32.INSTANCE.GetDriveType(root.getPath()); int type = Kernel32.INSTANCE.GetDriveType(root.getPath());
@@ -26,6 +26,6 @@ class WindowsRemovableDriveFinder implements RemovableDriveFinder {
throw new IOException(e); throw new IOException(e);
} }
} }
return Collections.unmodifiableList(drives); return drives;
} }
} }