YouarecreatinganewJSPpageandyouneedtoexecutesomecodethatactswhenthepageisfirstexecuted，butonlyonce.Whichthreearepossiblemechanismsforperformingthisinitializationcode？（）

A.Intheinitmethod.
B.InthejspInitmethod.
C.IntheconstructoroftheJSP’sJavacode.
D.InaJSPdeclaration，whichincludesaninitializerblock.
E.InaJSPdeclaration，whichincludesastaticinitializerblock.

【参考答案】

B, D, E