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1、tomcat部署的web应用中，在登陆的Servlet中记录登陆次数，代码如下：（3分）publicclassloginServletextendsHttpServlet{//登陆次数privatestaticlongpageView=0;publicvoiddoGet(HttpServletRequestreq,HttpServletResponseresp){pageView++;System.out.println(pageView);}}问：pageView记录是否准确？若准确请说明原因；若不准确，请说明原因？2、有如下一段代码，请写出输出值，并对为什么是该值进行简单说明。（3分）privatestaticvoidchange(StringBufferstr11,StringBufferstr12){str12=str11;str11=newStringBuffer("newworld");str12.append("newworld");}publicstaticvoidmain(String[]args){StringBufferstr1=newStringBuffer("good");StringBufferstr2=newStringBuffer("bad");change(str1,str2);System.out.println(str1.toString());System.out.println(str2.toString());}3、如下代码：（6分）publicclassA{privatestaticbooleanisTrue;publicstaticsynchronizedvoidstaticWrite(booleanb)throwsInterruptedExc