"Turn" the final local variable XXX cannot be assigned, since it's defined in an enclosing type

Text Address: http://blog.163.com/benben_long/blog/static/199458243201481102257544/

This article on its own programming time encountered a problem, briefly describe, and put forward a solution to the method:

Error message: The final local variable XXX cannot be assigned, since it was defined in an enclosing type ", where xxx is a local variable name

First, this is a Java compile-time error, translated into Chinese is: immutable local variable cannot be assigned, because it has been defined in a closed type.

Solution: The XXX is encapsulated, with a set or array, if XXX is the basic data type generally used array.

such as: XXX is a string type,

Can be encapsulated into string[] xxx=null;

Then in the next use of XXX variable place, will xxx written xxx[0];

xxx If the object, then you can use the collection will be XXX encapsulation .....

The situation I encountered was this:

Originally wanted to use a Boolean type variable. But you can't.

"Turn" the final local variable XXX cannot be assigned, since it's defined in an enclosing type