A、When using versions of Java technology earlier than 5.0.
B、When sharing a StringBuffer among multiple threads.
C、When using the java.io class StringBufferInputStream.
D、When you plan to reuse the StringBuffer to build more than one string.
更多“Which two scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object?（）”相关的问题
A、low-latency networks B、high-latency networks C、long-haul, low-bandwidth links D、long-haul, high-bandwidth links
A、It contains data till the last backup B、It contains all data from target database until the current time C、It contains all data from only the committed transactions in the target database D、It contains all data except that which is used by the transactions in the current online redo file of target database
A、two rockets，one of which shall be the buoyant type B、three rockets，one of which shall be the buoyant type C、four rockets，two of which shall be the buoyant type D、five rockets，two of which shall be the buoyant type
A、More memory per thread is beneficial in all scenarios B、It causes increased overhead due to initial memory allocation C、It can affect system stability during peak load times, due to swapping D、It requires increasing the thread_cache_size variable
A、A. Transform the data while it is being loaded into the database. B、B. Use transparent parallel processing without having to split the external data first. C、C. Load data into multiple tables during the same load statement. D、D. Generate unique sequential key values in specified columns.
A、Provider support for intra-AS and CSC scenarios B、Uses separate signaling plane， which provides more security than IPv4 C、BGP is the preferred routing protocol for connecting two SPs D、No requirement for a separate signaling plane
A、To store the backup information of multiple database B、To restrict the amount of space that is used by the backups C、To maintain a backup for a certain time is set by the CONTROL_FILE_RECORD_KEEP_TIME parameter. D、To list the data files that were in a target database at a given time by using the AT option of REPORT SCHEMA command.
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