Categories:
Audio (13)
Biotech (29)
Bytecode (36)
Database (77)
Framework (7)
Game (7)
General (507)
Graphics (53)
I/O (35)
IDE (2)
JAR Tools (101)
JavaBeans (21)
JDBC (121)
JDK (426)
JSP (20)
Logging (108)
Mail (58)
Messaging (8)
Network (84)
PDF (97)
Report (7)
Scripting (84)
Security (32)
Server (121)
Servlet (26)
SOAP (24)
Testing (54)
Web (15)
XML (309)
Collections:
Other Resources:
JRE 8 rt.jar - com.* 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 com.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.
✍: FYIcenter
⏎ com/sun/image/codec/jpeg/JPEGQTable.java
/* * * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ /********************************************************************** ********************************************************************** ********************************************************************** *** COPYRIGHT (c) 1997-1998 Eastman Kodak Company. *** *** As an unpublished work pursuant to Title 17 of the United *** *** States Code. All rights reserved. *** ********************************************************************** ********************************************************************** **********************************************************************/ package com.sun.image.codec.jpeg; /** Class to encapsulate the JPEG quantization tables. * <p> * Note that the classes in the com.sun.image.codec.jpeg package are not * part of the core Java APIs. They are a part of Sun's JDK and JRE * distributions. Although other licensees may choose to distribute these * classes, developers cannot depend on their availability in non-Sun * implementations. We expect that equivalent functionality will eventually * be available in a core API or standard extension. * <p> */ public class JPEGQTable { /** Quantization step for each coefficient in zig-zag order */ private int quantval[]; /** The number of coefficients in a DCT block */ private static final byte QTABLESIZE = 64; /** * This is the sample luminance quantization table given in the * JPEG spec section K.1, expressed in zigzag order. The spec says * that the values given produce "good" quality, and when divided * by 2, "very good" quality. */ public static final JPEGQTable StdLuminance = new JPEGQTable(); static { int [] lumVals = { 16, 11, 12, 14, 12, 10, 16, 14, 13, 14, 18, 17, 16, 19, 24, 40, 26, 24, 22, 22, 24, 49, 35, 37, 29, 40, 58, 51, 61, 60, 57, 51, 56, 55, 64, 72, 92, 78, 64, 68, 87, 69, 55, 56, 80, 109, 81, 87, 95, 98, 103, 104, 103, 62, 77, 113, 121, 112, 100, 120, 92, 101, 103, 99 }; StdLuminance.quantval = lumVals; } /** * This is the sample luminance quantization table given in the * JPEG spec section K.1, expressed in zigzag order. The spec says * that the values given produce "good" quality, and when divided * by 2, "very good" quality. */ public static final JPEGQTable StdChrominance = new JPEGQTable(); static { int [] chromVals = { 17, 18, 18, 24, 21, 24, 47, 26, 26, 47, 99, 66, 56, 66, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99 }; StdChrominance.quantval = chromVals; } /** * Constructs an empty quantization table. This is used to create * the Std Q-Tables. */ private JPEGQTable() { quantval = new int[QTABLESIZE]; } /** * Constructs an quantization table from the array that was * passed. The coefficents must be in zig-zag order. The array * must be of length 64. * @param table the quantization table (this is copied). */ public JPEGQTable( int table[] ) { if ( table.length != QTABLESIZE ) { throw new IllegalArgumentException ("Quantization table is the wrong size."); } else { quantval = new int[QTABLESIZE]; System.arraycopy( table, 0, quantval, 0, QTABLESIZE ); } } /** * Returns the current quantization table as an array of ints in * zig zag order. * @return A copy of the contained quantization table. */ public int[] getTable() { int[] table = new int[QTABLESIZE]; System.arraycopy( quantval, 0, table, 0, QTABLESIZE ); return table; } /** * Returns a new Quantization table where the values are * multiplied by scaleFactor and then clamped to the range * 1..32767 (or to 1..255 if forceBaseline is 'true'). <P> * Values less than one tend to improve the quality level of the * table, and values greater than one degrade the quality level of * the table. * @param scaleFactor the multiplication factor for the table * @param forceBaseline if true the values will be clamped * to the range [1 .. 255] * @return A new Q-Table that is a linear multiple of this Q-Table */ public JPEGQTable getScaledInstance(float scaleFactor, boolean forceBaseline ) { long max = (forceBaseline)?255L:32767L; int []ret = new int[QTABLESIZE]; for (int i=0; i<QTABLESIZE; i++ ) { long holder = (long)((quantval[i] * scaleFactor) + 0.5); // limit to valid range if (holder <= 0L) holder = 1L; // Max quantizer for 12 bits if (holder > max ) holder = max; ret[i] = (int)holder; } return new JPEGQTable(ret); } }
⏎ com/sun/image/codec/jpeg/JPEGQTable.java
Or download all of them as a single archive file:
File name: jre-rt-com-1.8.0_191-src.zip File size: 8099783 bytes Release date: 2018-10-28 Download
⇒ Backup JDK 8 Installation Directory
2023-02-07, 251724👍, 3💬
Popular Posts:
JDK 11 java.compiler.jmod is the JMOD file for JDK 11 Compiler module. JDK 11 Compiler module compil...
HttpComponents Core Source Code Files are provided in the source package file, httpcomponents-core-5...
What Is HttpComponents httpcore-4.2.2.jar? HttpComponents httpcore-4.2.2.jar is the JAR file for Apa...
commons-net.jar is the bytecode of Apache Commons Net library, which implements the client side of m...
commons-io-1.4.jar is the JAR file for Commons IO 1.4, which is a library of utilities to assist wit...