fix improper class/method/field modifiers

[hangc0276]

Motivation

The some java class/method/field modifiers are improper used.

Oracle java modifier order documentation:
https://docs.oracle.com/javase/specs/jls/se8/html/jls-8.html#jls-8.1.1

Class Modifiers

Class Modifier:
(one of)
Annotation public protected private
abstract static final strictfp

Method Modifiers

MethodModifier:
(one of)
Annotation public protected private
abstract static final synchronized native strictfp

Field Modifiers

FieldModifier:
(one of)
Annotation public protected private
static final transient volatile

Modification

Change mis-ordered modifiers.

[eolivelli]

LGTM

IIRC there is a checkstyle rule, can we activate it please ?

[hangc0276]

LGTM

IIRC there is a checkstyle rule, can we activate it please ?

@eolivelli good idea, i work for it.

[Anonymitaet]

@hangc0276 thanks for your contribution. For this PR, do we need to update docs?

[hangc0276]

@hangc0276 thanks for your contribution. For this PR, do we need to update docs?

@Anonymitaet No need to update docs, thanks.

[hangc0276]

LGTM

IIRC there is a checkstyle rule, can we activate it please ?

@eolivelli I have add the modifier order check, PTAL.

[eolivelli]

looks great