遍历Json对象的过程是什么样的啊？

在这个对象里面，要不断的用递归的方式去访问：
public static void navigateTree(JsonValue tree,String key) {
if(key != null)
System.out.print("Key " + key + ": "); 
switch(tree.getValueTvpe()){ 
case OBJECT:
System.out.printIn("OBJECT");
JsonObject object =(JsonObject) tree; 
for (String name: object.keySet())
navigateTree(object.get(name),name); 
break;
case ARRAY:
System.out.printIn("ARRAY");

如果进来之后发现不是子树怎么办？如果是数组:

JsonArray array=(JsonArray)tree; 
for(JsonValue val:array) 
navigateTree(val,null); 
break;

如果是字符串呢?

case STRING:
JsonStringst=(JsonString)tree;
System.out.println("STRING"+st.getString()); 
break;
case NUMBER:
JsonNumber num=(JsonNumber) tree;
System.out.printIn("NUMBER"+num.toString()); 
break; 
case TRUE: 
case FALSE: 
case NULL:
System.out.println(tree.getValueType().toString()); 
break;
 }
}