Module java.base
Package java.lang

Interface AutoCloseable

All Known Subinterfaces:
ArenaPREVIEW, AsynchronousByteChannel, AsynchronousChannel, BaseStream<T,S>, ByteChannel, CachedRowSet, CallableStatement, Channel, Clip, Closeable, Connection, DataLine, DirectoryStream<T>, DoubleStream, EventStream, ExecutionControl, ExecutorService, FilteredRowSet, GatheringByteChannel, ImageInputStream, ImageOutputStream, InterruptibleChannel, IntStream, JavaFileManager, JdbcRowSet, JMXConnector, JoinRowSet, Line, LongStream, MidiDevice, MidiDeviceReceiver, MidiDeviceTransmitter, Mixer, ModuleReader, MulticastChannel, NetworkChannel, ObjectInput, ObjectOutput, Port, PreparedStatement, ReadableByteChannel, Receiver, ResultSet, RMIConnection, RowSet, ScatteringByteChannel, ScheduledExecutorService, SecureDirectoryStream<T>, SeekableByteChannel, Sequencer, SourceDataLine, StandardJavaFileManager, Statement, Stream<T>, SyncResolver, Synthesizer, TargetDataLine, Transmitter, WatchService, WebRowSet, WritableByteChannel
All Known Implementing Classes:
AbstractExecutorService, AbstractInterruptibleChannel, AbstractSelectableChannel, AbstractSelector, AsynchronousFileChannel, AsynchronousServerSocketChannel, AsynchronousSocketChannel, AudioInputStream, BufferedInputStream, BufferedOutputStream, BufferedReader, BufferedWriter, ByteArrayInputStream, ByteArrayOutputStream, CharArrayReader, CharArrayWriter, CheckedInputStream, CheckedOutputStream, CipherInputStream, CipherOutputStream, DatagramChannel, DatagramSocket, DataInputStream, DataOutputStream, DeflaterInputStream, DeflaterOutputStream, DigestInputStream, DigestOutputStream, DirectExecutionControl, FileCacheImageInputStream, FileCacheImageOutputStream, FileChannel, FileImageInputStream, FileImageOutputStream, FileInputStream, FileLock, FileOutputStream, FileReader, FileSystem, FileWriter, FilterInputStream, FilterOutputStream, FilterReader, FilterWriter, ForkJoinPool, Formatter, ForwardingJavaFileManager, GZIPInputStream, GZIPOutputStream, HttpClient, HttpExchange, HttpsExchange, ImageInputStreamImpl, ImageOutputStreamImpl, InflaterInputStream, InflaterOutputStream, InputStream, InputStreamReader, JarFile, JarInputStream, JarOutputStream, JdiDefaultExecutionControl, JdiExecutionControl, JShell, LineNumberInputStream, LineNumberReader, LocalExecutionControl, LogStream, MemoryCacheImageInputStream, MemoryCacheImageOutputStream, MLet, MulticastSocket, ObjectInputStream, ObjectOutputStream, OutputStream, OutputStreamWriter, Pipe.SinkChannel, Pipe.SourceChannel, PipedInputStream, PipedOutputStream, PipedReader, PipedWriter, PrintStream, PrintWriter, PrivateMLet, ProgressMonitorInputStream, PushbackInputStream, PushbackReader, RandomAccessFile, Reader, Recording, RecordingFile, RecordingStream, RemoteExecutionControl, RemoteRecordingStream, RMIConnectionImpl, RMIConnectionImpl_Stub, RMIConnector, RMIJRMPServerImpl, RMIServerImpl, Scanner, ScheduledThreadPoolExecutor, SctpChannel, SctpMultiChannel, SctpServerChannel, SelectableChannel, Selector, SequenceInputStream, ServerSocket, ServerSocketChannel, Socket, SocketChannel, SSLServerSocket, SSLSocket, StreamingExecutionControl, StringBufferInputStream, StringReader, StringWriter, StructuredTaskScopePREVIEW, StructuredTaskScope.ShutdownOnFailurePREVIEW, StructuredTaskScope.ShutdownOnSuccessPREVIEW, SubmissionPublisher, ThreadPoolExecutor, URLClassLoader, Writer, XMLDecoder, XMLEncoder, ZipFile, ZipInputStream, ZipOutputStream
public interface AutoCloseable
An object that may hold resources (such as file or socket handles) until it is closed. The close() method of an AutoCloseable object is called automatically when exiting a try-with-resources block for which the object has been declared in the resource specification header. This construction ensures prompt release, avoiding resource exhaustion exceptions and errors that may otherwise occur.
Since:
1.7

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    close()
    Closes this resource, relinquishing any underlying resources.

  • Method Details

    • close

      void close() throws Exception
      Closes this resource, relinquishing any underlying resources. This method is invoked automatically on objects managed by the try-with-resources statement.
      Throws:
      Exception - if this resource cannot be closed