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JRE 8 rt.jar - java.* Package Source Code
JRE 8 rt.jar is the JAR file for JRE 8 RT (Runtime) libraries.
JRE (Java Runtime) 8 is the runtime environment included in JDK 8.
JRE 8 rt.jar libraries are divided into 6 packages:
com.* - Internal Oracle and Sun Microsystems libraries java.* - Standard Java API libraries. javax.* - Extended Java API libraries. jdk.* - JDK supporting libraries. org.* - Third party libraries. sun.* - Old libraries developed by Sun Microsystems.
JAR File Information:
Directory of C:\fyicenter\jdk-1.8.0_191\jre\lib 63,596,151 rt.jar
Here is the list of Java classes of the java.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.
✍: FYIcenter
⏎ java/io/InputStream.java
/* * Copyright (c) 1994, 2013, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package java.io; /** * This abstract class is the superclass of all classes representing * an input stream of bytes. * * <p> Applications that need to define a subclass of <code>InputStream</code> * must always provide a method that returns the next byte of input. * * @author Arthur van Hoff * @see java.io.BufferedInputStream * @see java.io.ByteArrayInputStream * @see java.io.DataInputStream * @see java.io.FilterInputStream * @see java.io.InputStream#read() * @see java.io.OutputStream * @see java.io.PushbackInputStream * @since JDK1.0 */ public abstract class InputStream implements Closeable { // MAX_SKIP_BUFFER_SIZE is used to determine the maximum buffer size to // use when skipping. private static final int MAX_SKIP_BUFFER_SIZE = 2048; /** * Reads the next byte of data from the input stream. The value byte is * returned as an <code>int</code> in the range <code>0</code> to * <code>255</code>. If no byte is available because the end of the stream * has been reached, the value <code>-1</code> is returned. This method * blocks until input data is available, the end of the stream is detected, * or an exception is thrown. * * <p> A subclass must provide an implementation of this method. * * @return the next byte of data, or <code>-1</code> if the end of the * stream is reached. * @exception IOException if an I/O error occurs. */ public abstract int read() throws IOException; /** * Reads some number of bytes from the input stream and stores them into * the buffer array <code>b</code>. The number of bytes actually read is * returned as an integer. This method blocks until input data is * available, end of file is detected, or an exception is thrown. * * <p> If the length of <code>b</code> is zero, then no bytes are read and * <code>0</code> is returned; otherwise, there is an attempt to read at * least one byte. If no byte is available because the stream is at the * end of the file, the value <code>-1</code> is returned; otherwise, at * least one byte is read and stored into <code>b</code>. * * <p> The first byte read is stored into element <code>b[0]</code>, the * next one into <code>b[1]</code>, and so on. The number of bytes read is, * at most, equal to the length of <code>b</code>. Let <i>k</i> be the * number of bytes actually read; these bytes will be stored in elements * <code>b[0]</code> through <code>b[</code><i>k</i><code>-1]</code>, * leaving elements <code>b[</code><i>k</i><code>]</code> through * <code>b[b.length-1]</code> unaffected. * * <p> The <code>read(b)</code> method for class <code>InputStream</code> * has the same effect as: <pre><code> read(b, 0, b.length) </code></pre> * * @param b the buffer into which the data is read. * @return the total number of bytes read into the buffer, or * <code>-1</code> if there is no more data because the end of * the stream has been reached. * @exception IOException If the first byte cannot be read for any reason * other than the end of the file, if the input stream has been closed, or * if some other I/O error occurs. * @exception NullPointerException if <code>b</code> is <code>null</code>. * @see java.io.InputStream#read(byte[], int, int) */ public int read(byte b[]) throws IOException { return read(b, 0, b.length); } /** * Reads up to <code>len</code> bytes of data from the input stream into * an array of bytes. An attempt is made to read as many as * <code>len</code> bytes, but a smaller number may be read. * The number of bytes actually read is returned as an integer. * * <p> This method blocks until input data is available, end of file is * detected, or an exception is thrown. * * <p> If <code>len</code> is zero, then no bytes are read and * <code>0</code> is returned; otherwise, there is an attempt to read at * least one byte. If no byte is available because the stream is at end of * file, the value <code>-1</code> is returned; otherwise, at least one * byte is read and stored into <code>b</code>. * * <p> The first byte read is stored into element <code>b[off]</code>, the * next one into <code>b[off+1]</code>, and so on. The number of bytes read * is, at most, equal to <code>len</code>. Let <i>k</i> be the number of * bytes actually read; these bytes will be stored in elements * <code>b[off]</code> through <code>b[off+</code><i>k</i><code>-1]</code>, * leaving elements <code>b[off+</code><i>k</i><code>]</code> through * <code>b[off+len-1]</code> unaffected. * * <p> In every case, elements <code>b[0]</code> through * <code>b[off]</code> and elements <code>b[off+len]</code> through * <code>b[b.length-1]</code> are unaffected. * * <p> The <code>read(b,</code> <code>off,</code> <code>len)</code> method * for class <code>InputStream</code> simply calls the method * <code>read()</code> repeatedly. If the first such call results in an * <code>IOException</code>, that exception is returned from the call to * the <code>read(b,</code> <code>off,</code> <code>len)</code> method. If * any subsequent call to <code>read()</code> results in a * <code>IOException</code>, the exception is caught and treated as if it * were end of file; the bytes read up to that point are stored into * <code>b</code> and the number of bytes read before the exception * occurred is returned. The default implementation of this method blocks * until the requested amount of input data <code>len</code> has been read, * end of file is detected, or an exception is thrown. Subclasses are encouraged * to provide a more efficient implementation of this method. * * @param b the buffer into which the data is read. * @param off the start offset in array <code>b</code> * at which the data is written. * @param len the maximum number of bytes to read. * @return the total number of bytes read into the buffer, or * <code>-1</code> if there is no more data because the end of * the stream has been reached. * @exception IOException If the first byte cannot be read for any reason * other than end of file, or if the input stream has been closed, or if * some other I/O error occurs. * @exception NullPointerException If <code>b</code> is <code>null</code>. * @exception IndexOutOfBoundsException If <code>off</code> is negative, * <code>len</code> is negative, or <code>len</code> is greater than * <code>b.length - off</code> * @see java.io.InputStream#read() */ public int read(byte b[], int off, int len) throws IOException { if (b == null) { throw new NullPointerException(); } else if (off < 0 || len < 0 || len > b.length - off) { throw new IndexOutOfBoundsException(); } else if (len == 0) { return 0; } int c = read(); if (c == -1) { return -1; } b[off] = (byte)c; int i = 1; try { for (; i < len ; i++) { c = read(); if (c == -1) { break; } b[off + i] = (byte)c; } } catch (IOException ee) { } return i; } /** * Skips over and discards <code>n</code> bytes of data from this input * stream. The <code>skip</code> method may, for a variety of reasons, end * up skipping over some smaller number of bytes, possibly <code>0</code>. * This may result from any of a number of conditions; reaching end of file * before <code>n</code> bytes have been skipped is only one possibility. * The actual number of bytes skipped is returned. If {@code n} is * negative, the {@code skip} method for class {@code InputStream} always * returns 0, and no bytes are skipped. Subclasses may handle the negative * value differently. * * <p> The <code>skip</code> method of this class creates a * byte array and then repeatedly reads into it until <code>n</code> bytes * have been read or the end of the stream has been reached. Subclasses are * encouraged to provide a more efficient implementation of this method. * For instance, the implementation may depend on the ability to seek. * * @param n the number of bytes to be skipped. * @return the actual number of bytes skipped. * @exception IOException if the stream does not support seek, * or if some other I/O error occurs. */ public long skip(long n) throws IOException { long remaining = n; int nr; if (n <= 0) { return 0; } int size = (int)Math.min(MAX_SKIP_BUFFER_SIZE, remaining); byte[] skipBuffer = new byte[size]; while (remaining > 0) { nr = read(skipBuffer, 0, (int)Math.min(size, remaining)); if (nr < 0) { break; } remaining -= nr; } return n - remaining; } /** * Returns an estimate of the number of bytes that can be read (or * skipped over) from this input stream without blocking by the next * invocation of a method for this input stream. The next invocation * might be the same thread or another thread. A single read or skip of this * many bytes will not block, but may read or skip fewer bytes. * * <p> Note that while some implementations of {@code InputStream} will return * the total number of bytes in the stream, many will not. It is * never correct to use the return value of this method to allocate * a buffer intended to hold all data in this stream. * * <p> A subclass' implementation of this method may choose to throw an * {@link IOException} if this input stream has been closed by * invoking the {@link #close()} method. * * <p> The {@code available} method for class {@code InputStream} always * returns {@code 0}. * * <p> This method should be overridden by subclasses. * * @return an estimate of the number of bytes that can be read (or skipped * over) from this input stream without blocking or {@code 0} when * it reaches the end of the input stream. * @exception IOException if an I/O error occurs. */ public int available() throws IOException { return 0; } /** * Closes this input stream and releases any system resources associated * with the stream. * * <p> The <code>close</code> method of <code>InputStream</code> does * nothing. * * @exception IOException if an I/O error occurs. */ public void close() throws IOException {} /** * Marks the current position in this input stream. A subsequent call to * the <code>reset</code> method repositions this stream at the last marked * position so that subsequent reads re-read the same bytes. * * <p> The <code>readlimit</code> arguments tells this input stream to * allow that many bytes to be read before the mark position gets * invalidated. * * <p> The general contract of <code>mark</code> is that, if the method * <code>markSupported</code> returns <code>true</code>, the stream somehow * remembers all the bytes read after the call to <code>mark</code> and * stands ready to supply those same bytes again if and whenever the method * <code>reset</code> is called. However, the stream is not required to * remember any data at all if more than <code>readlimit</code> bytes are * read from the stream before <code>reset</code> is called. * * <p> Marking a closed stream should not have any effect on the stream. * * <p> The <code>mark</code> method of <code>InputStream</code> does * nothing. * * @param readlimit the maximum limit of bytes that can be read before * the mark position becomes invalid. * @see java.io.InputStream#reset() */ public synchronized void mark(int readlimit) {} /** * Repositions this stream to the position at the time the * <code>mark</code> method was last called on this input stream. * * <p> The general contract of <code>reset</code> is: * * <ul> * <li> If the method <code>markSupported</code> returns * <code>true</code>, then: * * <ul><li> If the method <code>mark</code> has not been called since * the stream was created, or the number of bytes read from the stream * since <code>mark</code> was last called is larger than the argument * to <code>mark</code> at that last call, then an * <code>IOException</code> might be thrown. * * <li> If such an <code>IOException</code> is not thrown, then the * stream is reset to a state such that all the bytes read since the * most recent call to <code>mark</code> (or since the start of the * file, if <code>mark</code> has not been called) will be resupplied * to subsequent callers of the <code>read</code> method, followed by * any bytes that otherwise would have been the next input data as of * the time of the call to <code>reset</code>. </ul> * * <li> If the method <code>markSupported</code> returns * <code>false</code>, then: * * <ul><li> The call to <code>reset</code> may throw an * <code>IOException</code>. * * <li> If an <code>IOException</code> is not thrown, then the stream * is reset to a fixed state that depends on the particular type of the * input stream and how it was created. The bytes that will be supplied * to subsequent callers of the <code>read</code> method depend on the * particular type of the input stream. </ul></ul> * * <p>The method <code>reset</code> for class <code>InputStream</code> * does nothing except throw an <code>IOException</code>. * * @exception IOException if this stream has not been marked or if the * mark has been invalidated. * @see java.io.InputStream#mark(int) * @see java.io.IOException */ public synchronized void reset() throws IOException { throw new IOException("mark/reset not supported"); } /** * Tests if this input stream supports the <code>mark</code> and * <code>reset</code> methods. Whether or not <code>mark</code> and * <code>reset</code> are supported is an invariant property of a * particular input stream instance. The <code>markSupported</code> method * of <code>InputStream</code> returns <code>false</code>. * * @return <code>true</code> if this stream instance supports the mark * and reset methods; <code>false</code> otherwise. * @see java.io.InputStream#mark(int) * @see java.io.InputStream#reset() */ public boolean markSupported() { return false; } }
⏎ java/io/InputStream.java
Or download all of them as a single archive file:
File name: jre-rt-java-1.8.0_191-src.zip File size: 6664831 bytes Release date: 2018-10-28 Download
⇒ JRE 8 rt.jar - javax.* Package Source Code
2023-08-23, 266400👍, 4💬
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