Question
Why do i get classcastexception when accessing nested maps?

Answers

Say you have a map which contains a nested map ala: nestedmap.put ("key2", "somevalue"); map.put ("key1", nestedmap);
If you use the following syntax: String val = PropertyUtils.getProperty(bean, "map(key1)(key2)");
It will actually return "map(key1)", which will be a Map, not a String.
BeanUtils uses '.' as a property separator, and the second property should actually used mapped syntax, since it is directly accessing a map now, thus the correct usage should be: String val = PropertyUtils.getProperty(bean, "map(key1).key2");   Your Comment




More Software Questions..
What is the inputsplit in map reduce software?

What is software configuration management?

What Is Java Api For Xml-based Rpc (jax-rpc)?

How can you implement fine-grained auditing?

What is IBM’s simple explanation for Big Data’s four critical features?

What is static synchronized method in JDBC API? Give an example?

What does the NULLIF function do?

What happens if a start method is not invoked and the run method is directly invoked?

Should we override finalize method

what is the difference between mysql_fetch_array and mysql_fetch_object?

How will XML affect my document links?

Why to use Style Sheets?

What are Filters in MVC?

Can you explain Application layer in OSI model?

How to define new testplan attributes?

What are the minimum system requirements to run Photoshop? Is it possible to run Photoshop over linux?

Which oracle package is used to manage the oracle lock management services?

What is Latch Up? Explain Latch Up with cross section of a CMOS Inverter. How do you avoid Latch Up?

What is marker interface?

What types of partitioning are there for BW?



Search
Can you Answer!!
  • Q The movement of Objective Resolution to guide the deliberations of the Assembly was started by
  • Q What are schema objects?
  • Q How would you deal with spaces in Apache RewriteEngine?
  • Q In the Superman comics name the shrunken city in a bottle
  • Q Explain what are the advantages of leaving the allocation of a country resources to the price mechanism?
  • Q Who are more likely to get tape- worms?
  • Q Life Coverage has brought immense changes in television broadcasting. Elucidate with example
  • Q Can variable name start with numbers?
  • Q Explain Stress tolerant plants
  • Q Which port in India is a natural port?
  • Q Why do you do business with us?