在Java程序中，性能问题的大部分原因并不在于Java语言，而是在于程序本身。养成好的代码编写习惯非常重要，比如正确地、巧妙地运用java.lang.String类和java.util.Vector类，它能够显著地提高程序的性能。-in Java programs, most of the performance problems is not the reason for the Java language, but the process itself. Develop good habits code prepared is very important, such as the right to attempt to use java.lang.String java.util.Vector category and type, it can significantly improve the performance.