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

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

You can also browse Jackson Databind Source Code below:

⏎ com/fasterxml/jackson/databind/type/CollectionType.java

package com.fasterxml.jackson.databind.type;

import java.lang.reflect.TypeVariable;

import com.fasterxml.jackson.databind.JavaType;

/**
 * Type that represents Java Collection types (Lists, Sets).
 */
public final class CollectionType
    extends CollectionLikeType
{
    private static final long serialVersionUID = 1L;

    /*
    /**********************************************************
    /* Life-cycle
    /**********************************************************
     */

    private CollectionType(Class<?> collT, TypeBindings bindings,
            JavaType superClass, JavaType[] superInts, JavaType elemT,
            Object valueHandler, Object typeHandler, boolean asStatic)
    {
        super(collT, bindings, superClass, superInts, elemT, valueHandler, typeHandler, asStatic);
    }

    /**
     * @since 2.7
     */
    protected CollectionType(TypeBase base, JavaType elemT) {
        super(base, elemT);
    }

    /**
     * @since 2.7
     */
    public static CollectionType construct(Class<?> rawType, TypeBindings bindings,
            JavaType superClass, JavaType[] superInts, JavaType elemT) {
        return new CollectionType(rawType, bindings, superClass, superInts, elemT,
                null, null, false);
    }

    /**
     * @deprecated Since 2.7, remove from 2.9
     */
    @Deprecated // since 2.7
    public static CollectionType construct(Class<?> rawType, JavaType elemT) {
        // First: may need to fabricate TypeBindings (needed for refining into
        // concrete collection types, as per [databind#1102])
        TypeVariable<?>[] vars = rawType.getTypeParameters();
        TypeBindings bindings;
        if ((vars == null) || (vars.length != 1)) {
            bindings = TypeBindings.emptyBindings();
        } else {
            bindings = TypeBindings.create(rawType, elemT);
        }
        return new CollectionType(rawType, bindings,
                // !!! TODO: Wrong, does have supertypes, but:
                _bogusSuperClass(rawType), null, elemT,
                null, null, false);
    }

    @Deprecated // since 2.7
    @Override
    protected JavaType _narrow(Class<?> subclass) {
        return new CollectionType(subclass, _bindings,
                _superClass, _superInterfaces, _elementType, null, null, _asStatic);
    }

    @Override
    public JavaType withContentType(JavaType contentType) {
        if (_elementType == contentType) {
            return this;
        }
        return new CollectionType(_class, _bindings, _superClass, _superInterfaces,
                contentType, _valueHandler, _typeHandler, _asStatic);
    }
    
    @Override
    public CollectionType withTypeHandler(Object h) {
        return new CollectionType(_class, _bindings,
                _superClass, _superInterfaces, _elementType, _valueHandler, h, _asStatic);
    }

    @Override
    public CollectionType withContentTypeHandler(Object h)
    {
        return new CollectionType(_class, _bindings,
                _superClass, _superInterfaces, _elementType.withTypeHandler(h),
                _valueHandler, _typeHandler, _asStatic);
    }

    @Override
    public CollectionType withValueHandler(Object h) {
        return new CollectionType(_class, _bindings,
                _superClass, _superInterfaces, _elementType, h, _typeHandler, _asStatic);
    }

    @Override
    public  CollectionType withContentValueHandler(Object h) {
        return new CollectionType(_class, _bindings,
                _superClass, _superInterfaces, _elementType.withValueHandler(h),
                _valueHandler, _typeHandler, _asStatic);
    }

    @Override
    public CollectionType withStaticTyping() {
        if (_asStatic) {
            return this;
        }
        return new CollectionType(_class, _bindings,
                _superClass, _superInterfaces, _elementType.withStaticTyping(),
                _valueHandler, _typeHandler, true);
    }

    @Override
    public JavaType refine(Class<?> rawType, TypeBindings bindings,
            JavaType superClass, JavaType[] superInterfaces) {
        return new CollectionType(rawType, bindings,
                superClass, superInterfaces, _elementType,
                _valueHandler, _typeHandler, _asStatic);
    }

    /*
    /**********************************************************
    /* Standard methods
    /**********************************************************
     */

    @Override
    public String toString()
    {
        return "[collection type; class "+_class.getName()+", contains "+_elementType+"]";
    }
}

⏎ com/fasterxml/jackson/databind/type/CollectionType.java

Or download all of them as a single archive file:

File name: jackson-databind-2.14.0-sources.jar
File size: 1187952 bytes
Release date: 2022-11-05
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