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.

⏎ com/sun/jmx/snmp/SnmpTooBigException.java

/*
 * Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package com.sun.jmx.snmp;


/**
 * Is used internally to signal that the size of a PDU exceeds the packet size limitation.
 * <p>
 * You will not usually need to use this class, except if you
 * decide to implement your own
 * {@link com.sun.jmx.snmp.SnmpPduFactory SnmPduFactory} object.
 * <p>
 * The <CODE>varBindCount</CODE> property contains the
 * number of <CODE>SnmpVarBind</CODE> successfully encoded
 * before the exception was thrown. Its value is 0
 * when this number is unknown.
 *
 * <p><b>This API is a Sun Microsystems internal API  and is subject
 * to change without notice.</b></p>
 */

public class SnmpTooBigException extends Exception {
  private static final long serialVersionUID = 4754796246674803969L;

  /**
   * Builds an <CODE>SnmpTooBigException</CODE> with
   * <CODE>varBindCount</CODE> set to 0.
   */
  public SnmpTooBigException() {
    varBindCount = 0 ;
  }

  /**
   * Builds an <CODE>SnmpTooBigException</CODE> with
   * <CODE>varBindCount</CODE> set to the specified value.
   * @param n The <CODE>varBindCount</CODE> value.
   */
  public SnmpTooBigException(int n) {
    varBindCount = n ;
  }


  /**
   * Returns the number of <CODE>SnmpVarBind</CODE> successfully
   * encoded before the exception was thrown.
   *
   * @return A positive integer (0 means the number is unknown).
   */
  public int getVarBindCount() {
    return varBindCount ;
  }

  /**
   * The <CODE>varBindCount</CODE>.
   * @serial
   */
  private int varBindCount ;
}

⏎ com/sun/jmx/snmp/SnmpTooBigException.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 

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