Jackson is "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

Jackson Core Source Code files are provided in the source packge (jackson-core-2.14.0-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Core Source Code below:

⏎ com/fasterxml/jackson/core/JsonProcessingException.java

/* Jackson JSON-processor.
 *
 * Copyright (c) 2007- Tatu Saloranta, tatu.saloranta@iki.fi
 */

package com.fasterxml.jackson.core;

/**
 * Intermediate base class for all problems encountered when
 * processing (parsing, generating) JSON content
 * that are not pure I/O problems.
 * Regular {@link java.io.IOException}s will be passed through as is.
 * Sub-class of {@link java.io.IOException} for convenience.
 *<p>
 * Since Jackson 2.12 extends intermediate {@link JacksonException} type
 * instead of directly extending {@link java.io.IOException}.
 */
public class JsonProcessingException extends JacksonException
{
    private final static long serialVersionUID = 123; // eclipse complains otherwise

    protected JsonLocation _location;

    protected JsonProcessingException(String msg, JsonLocation loc, Throwable rootCause) {
        super(msg, rootCause);
        _location = loc;
    }

    protected JsonProcessingException(String msg) {
        super(msg);
    }

    protected JsonProcessingException(String msg, JsonLocation loc) {
        this(msg, loc, null);
    }

    protected JsonProcessingException(String msg, Throwable rootCause) {
        this(msg, null, rootCause);
    }

    protected JsonProcessingException(Throwable rootCause) {
        this(null, null, rootCause);
    }

    /*
    /**********************************************************************
    /* Extended API
    /**********************************************************************
     */

    @Override
    public JsonLocation getLocation() { return _location; }

    /**
     * Method that allows to remove context information from this exception's message.
     * Useful when you are parsing security-sensitive data and don't want original data excerpts
     * to be present in Jackson parser error messages.
     *
     * @since 2.9
     */
    public void clearLocation() { _location = null; }

    /**
     * Method that allows accessing the original "message" argument,
     * without additional decorations (like location information)
     * that overridden {@link #getMessage} adds.
     *
     * @return Original message passed in constructor
     *
     * @since 2.1
     */
    @Override
    public String getOriginalMessage() { return super.getMessage(); }

    /**
     * Method that allows accessing underlying processor that triggered
     * this exception; typically either {@link JsonParser} or {@link JsonGenerator}
     * for exceptions that originate from streaming API.
     * Note that it is possible that `null` may be returned if code throwing
     * exception either has no access to processor; or has not been retrofitted
     * to set it; this means that caller needs to take care to check for nulls.
     * Subtypes override this method with co-variant return type, for more
     * type-safe access.
     * 
     * @return Originating processor, if available; null if not.
     *
     * @since 2.7
     */
    @Override
    public Object getProcessor() { return null; }

    /*
    /**********************************************************************
    /* Methods for sub-classes to use, override
    /**********************************************************************
     */
    
    /**
     * Accessor that sub-classes can override to append additional
     * information right after the main message, but before
     * source location information.
     *
     * @return Message suffix assigned, if any; {@code null} if none
     */
    protected String getMessageSuffix() { return null; }

    /*
    /**********************************************************************
    /* Overrides of standard methods
    /**********************************************************************
     */

    /**
     * Default implementation overridden so that we can add location information
     *
     * @return Original {@code message} preceded by optional prefix and followed by
     *   location information, message and location information separated by a linefeed
     */
    @Override public String getMessage() {
        String msg = super.getMessage();
        if (msg == null) {
            msg = "N/A";
        }
        JsonLocation loc = getLocation();
        String suffix = getMessageSuffix();
        // mild optimization, if nothing extra is needed:
        if (loc != null || suffix != null) {
            StringBuilder sb = new StringBuilder(100);
            sb.append(msg);
            if (suffix != null) {
                sb.append(suffix);
            }
            if (loc != null) {
                sb.append('\n');
                sb.append(" at ");
                sb.append(loc.toString());
            }
            msg = sb.toString();
        }
        return msg;
    }

    @Override public String toString() { return getClass().getName()+": "+getMessage(); }
}

⏎ com/fasterxml/jackson/core/JsonProcessingException.java

Or download all of them as a single archive file:

File name: jackson-core-2.14.0-sources.jar
File size: 497693 bytes
Release date: 2022-11-05
Download 

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