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/sym/Name.java

package com.fasterxml.jackson.core.sym;

/**
 * Base class for tokenized names (key strings in objects) that have
 * been tokenized from byte-based input sources (like
 * {@link java.io.InputStream}.
 *
 * @author Tatu Saloranta
 */
public abstract class Name
{
    protected final String _name;

    protected final int _hashCode;

    protected Name(String name, int hashCode) {
        _name = name;
        _hashCode = hashCode;
    }

    public String getName() { return _name; }

    /*
    /**********************************************************
    /* Methods for package/core parser
    /**********************************************************
     */

    public abstract boolean equals(int q1);

    public abstract boolean equals(int q1, int q2);

    public abstract boolean equals(int q1, int q2, int q3);

    public abstract boolean equals(int[] quads, int qlen);

    /*
    /**********************************************************
    /* Overridden standard methods
    /**********************************************************
     */

    @Override public String toString() { return _name; }

    @Override public final int hashCode() { return _hashCode; }

    @Override public boolean equals(Object o) {
        // Canonical instances, can usually just do identity comparison
        return (o == this);
    }
}

⏎ com/fasterxml/jackson/core/sym/Name.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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⇑⇑ Jackson - Java JSON library