reflection « class name « Java Class Q&A

1. How to get a Class Object from the Class Name in Java    stackoverflow.com

I know the class name, say "MyClass" and want to retrieve the Class object, ie. MyClass.class for future references. Is there a way to do that? I've looked through the web but ...

2. java: get all variable names in a class    stackoverflow.com

I have a class and i want to find all of it's public variables (not functions). how can i do so? thanks!

3. Getting list of fully qualified names from a simple name    stackoverflow.com

I would like to get a list of classes that are available at runtime and that match a simple name. For example:

public List<String> getFQNs(String simpleName) {
    ...
}

// Would return ...

4. How can I use a string to find the class that has the same name with the string    stackoverflow.com

So, suppose I have a string str = "MyClass", now I want to use this str to find the MyClass so I can instantiate it, and use it.

5. How to get property names of a pojo class without public no-arg constructor?    stackoverflow.com

I want to get an array(or list) of a POJO's property names . I tried commons-beanutil's BeanUtils.describe(obj) , but it needs an object instance. But what if I only have that class , ...

6. Get an attribute's class from its name    stackoverflow.com

Sample not working :

Object o = ...; // The object you want to inspect
Class<?> c = o.getClass();

Field f = c.getDeclaredField("myColor");
f.setAccessible(true);

String valueOfMyColor = (String) f.get(o);