optimize code style

[slievrly]

What is the purpose of the change

optimize code style :

1. Constant naming rules require letters and underscore combinations
2. All override methods need to add @OverRide

Brief changelog

optimize code style

Verifying this change

ci

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[slievrly]

@ralf0131 why use CRLF line separators？

[codecov-io]

Codecov Report

Merging #4188 into master will decrease coverage by 0.02%.
The diff coverage is 94.28%.

@@             Coverage Diff              @@
##             master    #4188      +/-   ##
============================================
- Coverage     62.92%   62.89%   -0.03%     
+ Complexity      507      505       -2     
============================================
  Files           769      769              
  Lines         33058    33058              
  Branches       5217     5217              
============================================
- Hits          20802    20793       -9     
- Misses         9860     9867       +7     
- Partials       2396     2398       +2

Impacted Files	Coverage Δ	Complexity Δ
...ibaba/dubbo/registry/support/AbstractRegistry.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...ubbo/registry/support/AbstractRegistryFactory.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...ibaba/dubbo/registry/support/FailbackRegistry.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...ml/rpc/protocol/xmlrpc/XmlRpcProxyFactoryBean.java	66.66% <ø> (ø)	5 <0> (ø)	⬇️
.../main/java/org/apache/dubbo/rpc/RpcInvocation.java	66.66% <ø> (ø)	0 <0> (ø)	⬇️
...main/java/org/apache/dubbo/rpc/AsyncRpcResult.java	48.31% <ø> (ø)	0 <0> (ø)	⬇️
...rc/main/java/org/apache/dubbo/rpc/AppResponse.java	72.34% <ø> (ø)	0 <0> (ø)	⬇️
...he/dubbo/rpc/protocol/rmi/RmiRemoteInvocation.java	80% <100%> (ø)	2 <0> (ø)	⬇️
...java/org/apache/dubbo/common/utils/ClassUtils.java	71.13% <100%> (ø)	0 <0> (ø)	⬇️
...in/java/org/apache/dubbo/config/ServiceConfig.java	58.2% <100%> (ø)	0 <0> (ø)	⬇️
... and 10 more

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[slievrly]

@ralf0131 @kexianjun already revert.

[ralf0131]

LGTM.