9.5.3 Declaration directives

9.5.3 Declaration directives The declaration directives are used to define or undefine conditional

9.5.7 Line directives Line directives may be used to alter the line numbers and source file names t

9.5.4 Conditional compilation directives The conditional compilation directives are used to conditio

9.5 Pre-processing directives The pre-processing directives provide the ability to conditionally ski

在前面的教程中，我们已经使用了java.util.Date。可以有人就会问：为什么不只使用import java.util.*呢？其实，在JSPs中也可以使用import语句，但是它的语法跟普通的Ja

Using-directives facilitate the use of namespaces and types defined in other namespaces. Using-dire

Network Working Group J. Klensin, WG Chair Request For Comments: 1870 MCI STD: 10 N. Freed, Editor

Network Working Group J. Klensin, WG Chair Request for Comments: 1653 MCI Obsoletes: 1427 N. Freed,

if we have to define quite a number of constants, or global variables, it would be easier to use ul

character set,character encoding和xml encoding declaration character set,character encodin