bug #9147
Updated by Andreas Müller about 4 years ago
Use `String.join()` or one of the `org.apache.commons.lang3.StringUtils.join(..)` methods instead. These methods are making explicit use of the `StringBuffer` class. `CdmUtils.concat()` can not be optimized by the jit, so for each string item the new String object needs to be extended to new length, which is known to be a performance penalty. ~~The The `CdmUtils.concat()` methods have been deprecated now.~~ now.