JDK 17 java.base.jmod - Base Module

JDK 17 java.base.jmod is the JMOD file for JDK 17 Base module.

JDK 17 Base module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\java.base.jmod.

JDK 17 Base module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.

JDK 17 Base module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\java.base.

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java/io/FilterOutputStream.java

/*
 * Copyright (c) 1994, 2019, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package java.io;

/**
 * This class is the superclass of all classes that filter output
 * streams. These streams sit on top of an already existing output
 * stream (the <i>underlying</i> output stream) which it uses as its
 * basic sink of data, but possibly transforming the data along the
 * way or providing additional functionality.
 * <p>
 * The class {@code FilterOutputStream} itself simply overrides
 * all methods of {@code OutputStream} with versions that pass
 * all requests to the underlying output stream. Subclasses of
 * {@code FilterOutputStream} may further override some of these
 * methods as well as provide additional methods and fields.
 *
 * @author  Jonathan Payne
 * @since   1.0
 */
public class FilterOutputStream extends OutputStream {
    /**
     * The underlying output stream to be filtered.
     */
    protected OutputStream out;

    /**
     * Whether the stream is closed; implicitly initialized to false.
     */
    private volatile boolean closed;

    /**
     * Object used to prevent a race on the 'closed' instance variable.
     */
    private final Object closeLock = new Object();

    /**
     * Creates an output stream filter built on top of the specified
     * underlying output stream.
     *
     * @param   out   the underlying output stream to be assigned to
     *                the field {@code this.out} for later use, or
     *                {@code null} if this instance is to be
     *                created without an underlying stream.
     */
    public FilterOutputStream(OutputStream out) {
        this.out = out;
    }

    /**
     * Writes the specified {@code byte} to this output stream.
     * <p>
     * The {@code write} method of {@code FilterOutputStream}
     * calls the {@code write} method of its underlying output stream,
     * that is, it performs {@code out.write(b)}.
     * <p>
     * Implements the abstract {@code write} method of {@code OutputStream}.
     *
     * @param      b   the {@code byte}.
     * @throws     IOException  if an I/O error occurs.
     */
    @Override
    public void write(int b) throws IOException {
        out.write(b);
    }

    /**
     * Writes {@code b.length} bytes to this output stream.
     * <p>
     * The {@code write} method of {@code FilterOutputStream}
     * calls its {@code write} method of three arguments with the
     * arguments {@code b}, {@code 0}, and
     * {@code b.length}.
     * <p>
     * Note that this method does not call the one-argument
     * {@code write} method of its underlying output stream with
     * the single argument {@code b}.
     *
     * @param      b   the data to be written.
     * @throws     IOException  if an I/O error occurs.
     * @see        java.io.FilterOutputStream#write(byte[], int, int)
     */
    @Override
    public void write(byte b[]) throws IOException {
        write(b, 0, b.length);
    }

    /**
     * Writes {@code len} bytes from the specified
     * {@code byte} array starting at offset {@code off} to
     * this output stream.
     * <p>
     * The {@code write} method of {@code FilterOutputStream}
     * calls the {@code write} method of one argument on each
     * {@code byte} to output.
     * <p>
     * Note that this method does not call the {@code write} method
     * of its underlying output stream with the same arguments. Subclasses
     * of {@code FilterOutputStream} should provide a more efficient
     * implementation of this method.
     *
     * @param      b     the data.
     * @param      off   the start offset in the data.
     * @param      len   the number of bytes to write.
     * @throws     IOException  if an I/O error occurs.
     * @see        java.io.FilterOutputStream#write(int)
     */
    @Override
    public void write(byte b[], int off, int len) throws IOException {
        if ((off | len | (b.length - (len + off)) | (off + len)) < 0)
            throw new IndexOutOfBoundsException();

        for (int i = 0 ; i < len ; i++) {
            write(b[off + i]);
        }
    }

    /**
     * Flushes this output stream and forces any buffered output bytes
     * to be written out to the stream.
     * <p>
     * The {@code flush} method of {@code FilterOutputStream}
     * calls the {@code flush} method of its underlying output stream.
     *
     * @throws     IOException  if an I/O error occurs.
     * @see        java.io.FilterOutputStream#out
     */
    @Override
    public void flush() throws IOException {
        out.flush();
    }

    /**
     * Closes this output stream and releases any system resources
     * associated with the stream.
     * <p>
     * When not already closed, the {@code close} method of {@code
     * FilterOutputStream} calls its {@code flush} method, and then
     * calls the {@code close} method of its underlying output stream.
     *
     * @throws     IOException  if an I/O error occurs.
     * @see        java.io.FilterOutputStream#flush()
     * @see        java.io.FilterOutputStream#out
     */
    @Override
    public void close() throws IOException {
        if (closed) {
            return;
        }
        synchronized (closeLock) {
            if (closed) {
                return;
            }
            closed = true;
        }

        Throwable flushException = null;
        try {
            flush();
        } catch (Throwable e) {
            flushException = e;
            throw e;
        } finally {
            if (flushException == null) {
                out.close();
            } else {
                try {
                    out.close();
                } catch (Throwable closeException) {
                   // evaluate possible precedence of flushException over closeException
                   if ((flushException instanceof ThreadDeath) &&
                       !(closeException instanceof ThreadDeath)) {
                       flushException.addSuppressed(closeException);
                       throw (ThreadDeath) flushException;
                   }

                    if (flushException != closeException) {
                        closeException.addSuppressed(flushException);
                    }

                    throw closeException;
                }
            }
        }
    }
}

java/io/FilterOutputStream.java

 

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File name: java.base-17.0.5-src.zip
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Release date: 2022-09-13
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