import com.jcabi.aspects.Immutable; //導入依賴的package包/類

/**

* This class is immutable?

* @param type The class to check

* @throws ImmutabilityChecker.Violation If it is mutable

*/

private void check(final Class> type)

throws ImmutabilityChecker.Violation {

synchronized (this.immutable) {

if (!this.ignore(type)) {

if (type.isInterface()

&& !type.isAnnotationPresent(Immutable.class)) {

throw new ImmutabilityChecker.Violation(

String.format(

"Interface '%s' is not annotated with @Immutable",

type.getName()

)

);

}

if (!type.isInterface()

&& !Modifier.isFinal(type.getModifiers())) {

throw new Violation(

String.format(

"Class '%s' is not final",

type.getName()

)

);

}

try {

this.fields(type);

} catch (final ImmutabilityChecker.Violation ex) {

throw new ImmutabilityChecker.Violation(

String.format("Class '%s' is mutable", type.getName()),

ex

);

}

this.immutable.add(type);

Logger.debug(this, "#check(%s): immutability checked", type);

}

}

}

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