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/node/ContainerNode.java

package com.fasterxml.jackson.databind.node;

import java.math.BigDecimal;
import java.math.BigInteger;

import com.fasterxml.jackson.core.*;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.util.RawValue;

/**
 * This intermediate base class is used for all container nodes,
 * specifically, array and object nodes.
 */
public abstract class ContainerNode<T extends ContainerNode<T>>
    extends BaseJsonNode
    implements JsonNodeCreator
{
    private static final long serialVersionUID = 1L;

    /**
     * We will keep a reference to the Object (usually TreeMapper)
     * that can construct instances of nodes to add to this container
     * node.
     */
    protected final JsonNodeFactory _nodeFactory;

    protected ContainerNode(JsonNodeFactory nc) {
        _nodeFactory = nc;
    }

    protected ContainerNode() { _nodeFactory = null; } // only for JDK ser

    // all containers are mutable: can't define:
//    @Override public abstract <T extends JsonNode> T deepCopy();

    @Override
    public abstract JsonToken asToken();

    @Override
    public String asText() { return ""; }

    /*
    /**********************************************************
    /* Methods reset as abstract to force real implementation
    /**********************************************************
     */

    @Override
    public abstract int size();

    @Override
    public abstract JsonNode get(int index);

    @Override
    public abstract JsonNode get(String fieldName);

    @Override
    protected abstract ObjectNode _withObject(JsonPointer origPtr,
            JsonPointer currentPtr,
            OverwriteMode overwriteMode, boolean preferIndex);

    /*
    /**********************************************************
    /* JsonNodeCreator implementation, Enumerated/singleton types
    /**********************************************************
     */

    @Override
    public final BooleanNode booleanNode(boolean v) { return _nodeFactory.booleanNode(v); }

    public JsonNode missingNode() {
        return _nodeFactory.missingNode();
    }

    @Override
    public final NullNode nullNode() { return _nodeFactory.nullNode(); }

    /*
    /**********************************************************
    /* JsonNodeCreator implementation, just dispatch to real creator
    /**********************************************************
     */
    
    /**
     * Factory method that constructs and returns an empty {@link ArrayNode}
     * Construction is done using registered {@link JsonNodeFactory}.
     */
    @Override
    public final ArrayNode arrayNode() { return _nodeFactory.arrayNode(); }

    /**
     * Factory method that constructs and returns an {@link ArrayNode} with an initial capacity
     * Construction is done using registered {@link JsonNodeFactory}
     * @param capacity the initial capacity of the ArrayNode
     */
    @Override
    public final ArrayNode arrayNode(int capacity) { return _nodeFactory.arrayNode(capacity); }

    /**
     * Factory method that constructs and returns an empty {@link ObjectNode}
     * Construction is done using registered {@link JsonNodeFactory}.
     */
    @Override
    public final ObjectNode objectNode() { return _nodeFactory.objectNode(); }

    @Override
    public final NumericNode numberNode(byte v) { return _nodeFactory.numberNode(v); }
    @Override
    public final NumericNode numberNode(short v) { return _nodeFactory.numberNode(v); }
    @Override
    public final NumericNode numberNode(int v) { return _nodeFactory.numberNode(v); }
    @Override
    public final NumericNode numberNode(long v) {
        return _nodeFactory.numberNode(v);
    }

    @Override
    public final NumericNode numberNode(float v) { return _nodeFactory.numberNode(v); }
    @Override
    public final NumericNode numberNode(double v) { return _nodeFactory.numberNode(v); }

    @Override
    public final ValueNode numberNode(BigInteger v) { return _nodeFactory.numberNode(v); }
    @Override
    public final ValueNode numberNode(BigDecimal v) { return (_nodeFactory.numberNode(v)); }

    @Override
    public final ValueNode numberNode(Byte v) { return _nodeFactory.numberNode(v); }
    @Override
    public final ValueNode numberNode(Short v) { return _nodeFactory.numberNode(v); }
    @Override
    public final ValueNode numberNode(Integer v) { return _nodeFactory.numberNode(v); }
    @Override
    public final ValueNode numberNode(Long v) { return _nodeFactory.numberNode(v); }

    @Override
    public final ValueNode numberNode(Float v) { return _nodeFactory.numberNode(v); }
    @Override
    public final ValueNode numberNode(Double v) { return _nodeFactory.numberNode(v); }

    @Override
    public final TextNode textNode(String text) { return _nodeFactory.textNode(text); }

    @Override
    public final BinaryNode binaryNode(byte[] data) { return _nodeFactory.binaryNode(data); }
    @Override
    public final BinaryNode binaryNode(byte[] data, int offset, int length) { return _nodeFactory.binaryNode(data, offset, length); }

    @Override
    public final ValueNode pojoNode(Object pojo) { return _nodeFactory.pojoNode(pojo); }

    @Override
    public final ValueNode rawValueNode(RawValue value) { return _nodeFactory.rawValueNode(value); }

    /*
    /**********************************************************
    /* Common mutators
    /**********************************************************
     */

    /**
     * Method for removing all children container has (if any)
     *
     * @return Container node itself (to allow method call chaining)
     */
    public abstract T removeAll();
}

⏎ com/fasterxml/jackson/databind/node/ContainerNode.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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