Java8 Lambda version of https://github.com/takawitter/jsonman#sample-code-2-finding-node .

NodeFinderTest.java

import net.arnx.jsonic.JSON;
import org.jsonman.Node;
import org.jsonman.NodeFactory;
import org.jsonman.NodeFinder;
import org.jsonman.node.MapNode;
import org.junit.Assert;
import org.junit.Test;

public class NodeFinderTest{
    @Test
    public void test_4() throws Exception{
        Node src = NodeFactory.create(JSON.decode(
            "{\"people\":[{\"name\":\"john\",\"age\":20}," +
            "{\"name\":\"bob\",\"age\":30}]}"
            ));
        new NodeFinder(src).find("/people[name=bob]", (path, node) -> {
                Assert.assertTrue(node.isMap());
                MapNode mn = node.cast();
                Assert.assertEquals("bob", mn.getChildValue("name"));
                Assert.assertEquals(30, ((Number)mn.getChildValue("age")).intValue());
            });
    }
}