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/SnmpOidRecord.java

/*
 *
 * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
// Copyright (c) 1995-96 by Cisco Systems, Inc.

package com.sun.jmx.snmp;

/**
 * Represents an entry of an {@link com.sun.jmx.snmp.SnmpOidTable SnmpOidTable}. It contains the name of the MIB variable,
 * the corresponding OID and its type.
 * The type is represented using one of the following:
 * <UL>
 *<LI>"C"       for <CODE>Counter32</CODE>
 *<LI>"C64"     for <CODE>Counter64</CODE>
 *<LI>"EN"      for <CODE>Table Entry</CODE>
 *<LI>"G"       for <CODE>Gauge32</CODE>
 *<LI>"I"       for <CODE>Integer32</CODE>
 *<LI>"ID"      for <CODE>OBJECT-IDENTITY</CODE>
 *<LI>"IP"      for <CODE>IpAddress</CODE>
 *<LI>"NT"      for <CODE>NOTIFICATION-TYPE</CODE>
 *<LI>"NU"      for <CODE>Null</CODE>
 *<LI>"O"       for <CODE>Opaque</CODE>
 *<LI>"OI"      for <CODE>Object Identifier</CODE>
 *<LI>"S"       for <CODE>String</CODE>
 *<LI>"T"       for <CODE>TimeTicks</CODE>
 *<LI>"TA"      for <CODE>Table</CODE>
 *<LI>"U"       for <CODE>Unsigned32</CODE>
 *</UL>
 *
 * <p><b>This API is a Sun Microsystems internal API  and is subject
 * to change without notice.</b></p>
 * @see com.sun.jmx.snmp.SnmpOidTable
 */

public class SnmpOidRecord {

    /**
     * Creates an <CODE>SnmpOidRecord</CODE> with the specified MIB variable
     * name, OID and type.
     * @param name The logical name of the MIB variable.
     * @param oid The OID of the MIB variable.
     * @param type The type of the MIB variable.
     */
    public SnmpOidRecord(String name, String oid, String type) {
        this.name = name;
        this.oid = oid;
        this.type = type;
    }

    /**
     * Gets the logical name of the MIB variable.
     * @return The MIB variable name.
     */
    public String getName() {
        return name;
    }

    /**
     * Gets the OID of the MIB variable.
     * @return The MIB variable OID.
     */
    public String getOid() {
        return oid;
    }

    /**
     * Gets the type of the MIB variable.
     * @return The MIB variable type.
     */
    public String getType() {
        return type;
    }

    // PRIVATE VARIABLES

    /**
     * The MIB variable name.
     */
    private String name;
    /**
     * The MIB variable OID.
     */
    private String oid;
    /**
     * The MIB variable type.
     */
    private String type;
}

⏎ com/sun/jmx/snmp/SnmpOidRecord.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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