$ javac Test1.java
$ cat Test1.java 
public class Test1 {

    {}
    static {}

    void method6(int a) {
          {}; //ok
    }

    void method7(int a) {} //ok
    void method8(int a) {/*:)*/} //ok, should be violation

    class TestClass4 {} //ok

    enum Test {}

    interface Interface {}

    @interface ClassPreamble { } //ok, should be violation, as there is space
}

$ cat config.xml 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
                        "https://checkstyle.org/dtds/configuration_1_3.dtd">

<module name="Checker">
  <module name="TreeWalker">
        <module name="RightCurly">
             <property name="id" value="RightCurlyAlone"/>
             <property name="option" value="alone"/>
             <property name="tokens"
              value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, 
                     LITERAL_WHILE, STATIC_INIT,
                     INSTANCE_INIT, ANNOTATION_DEF, ENUM_DEF"/>
        </module>
        <module name="SuppressionXpathSingleFilter">
          <property name="id" value="RightCurlyAlone"/>
          <property name="query" value="//RCURLY[parent::SLIST[count(./*)=1]
                                                 or parent::OBJBLOCK[count(./*)=2]]"/>
        </module>
  </module>
</module>

$ java -jar /var/tmp/checkstyle-8.29-all.jar -c config.xml Test1.java 
Starting audit...
Audit done.

$ cat TestClass.java
public class Test1 {

    {}
    static {}

    void method6(int a) {
          {}; //ok
    }

    void method7(int a) {} //ok
    void method8(int a) {/*:)*/} //ok, should be violation

    class TestClass4 {} //ok

    enum Test {}

    interface Interface {}

    @interface ClassPreamble { } //ok, should be violation, as there is space
}

$ cat TestConfig.xml
<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
          "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
          "https://checkstyle.org/dtds/configuration_1_3.dtd">

<module name="Checker">
  <module name="TreeWalker">
        <module name="RightCurly">
             <property name="id" value="RightCurlyAlone"/>
             <property name="option" value="alone"/>
             <property name="tokens"
              value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, 
                     LITERAL_WHILE, STATIC_INIT,
                     INSTANCE_INIT, ANNOTATION_DEF, ENUM_DEF"/>
        </module>
        <module name="TodoComment" />
        <module name="SuppressionXpathSingleFilter">
          <property name="id" value="RightCurlyAlone"/>
          <property name="query" value="//RCURLY[parent::SLIST[count(./*)=1]
                                                 or parent::OBJBLOCK[count(./*)=2]]"/>
        </module>
  </module>
</module>

$ java -jar checkstyle-8.29-all.jar -c TestConfig.xml TestClass.java
Starting audit...
[ERROR] TestClass.java:11:32: '}' at column 32 should be alone on a line. [RightCurlyAlone]
Audit done.
Checkstyle ends with 1 errors.