A snippet to dump java object differences with java-object-diff

DiffDumpUtils.java

import de.danielbechler.diff.ObjectDifferBuilder;
import de.danielbechler.diff.node.DiffNode;
import de.danielbechler.diff.node.Visit;

// implemented with java-object-diff(https://github.com/SQiShER/java-object-diff)
public final class DiffDumpUtils {
	public static void dumpDiff(Object o1, Object o2) {
		DiffNode root = ObjectDifferBuilder.buildDefault().compare(o2, o1);

		root.visit((DiffNode node, Visit visit) -> {
			Object o1Part = node.canonicalGet(o1);
			Object o2Part = node.canonicalGet(o2);

			switch (node.getState()) {
			case ADDED:
				System.out.println(node.getPath() + " " + node.getState() + ": " + getObjectSummary(o2Part));
				break;
			case REMOVED:
				System.out.println(node.getPath() + " " + node.getState() + ": " + getObjectSummary(o1Part));
				break;
			case CHANGED:
				System.out.println(node.getPath() + " " + node.getState() + ": " + getObjectSummary(o1Part) + " => " + getObjectSummary(o2Part));
				break;
			default:
				System.out.println(node.getPath() + " " + node.getState() + ": " + getObjectSummary(o1Part) + ", " + getObjectSummary(o2Part));
				break;
			}
		});
	}

	private static String getObjectSummary(Object o) {
		return o + "(0x" + Integer.toHexString(System.identityHashCode(o)) + ")";
	}
}