in commons-jcs3-sandbox/commons-jcs3-yajcache/src/main/java/org/apache/commons/jcs/yajcache/util/ClassUtils.java [36:51]
public boolean isImmutable(@NonNullable Class t) {
return t == String.class
|| t.isPrimitive()
|| t == Boolean.class
|| t == Byte.class
|| t == Character.class
|| t == Short.class
|| t == Integer.class
|| t == Long.class
|| t == Float.class
|| t == Double.class
|| t == BigInteger.class
|| t == BigDecimal.class
|| t.isEnum()
;
}