华为公司招聘java程序员面试题-JAVA程序员JAVA工程师面试必看.doc

-JAVA程序员JAVA工程师面试必看

第一部分:选择题

QUESTIONNO:1

1、publicclassTest{

publicstaticvoidchangeStr(Stringstr){

str="welcome";

}

publicstaticvoidmain(String[]args){

Stringstr="1234";

changeStr(str);

System.out.println(str);

}

}

Pleasewritetheoutputresult:

QUESTIONNO:2

1.publicclassTest{

2.staticbooleanfoo(charc){

3.System.out.print(c);

4.returntrue;

5.}

6.publicstaticvoidmain(String[]argv){

7.inti=0;

8.for(foo('A');foo('B')&&(i<2);foo('C')){

9.i++;

10.foo('D');

12.}

13.}

14.}

Whatistheresult?

A.ABDCBDCB

B.ABCDABCD

C.Compilationfails.

D.Anexceptionisthrownatruntime.

QUESTIONNO:3

1.classA{

2.protectedintmethod1(inta,intb){return0;}

3.}

WhichtwoarevalidinaclassthatextendsclassA?(Choosetwo)

A.publicintmethod1(inta,intb){return0;}

B.privateintmethod1(inta,intb){return0;}

C.privateintmethod1(inta,longb){return0;}

D.publicshortmethod1(inta,intb){return0;}

E.staticprotectedintmethod1(inta,intb){return0;}

QUESTIONNO:4

1.publicclassOuter{

2.publicvoidsomeOuterMethod(){

3.//Line3

4.}

5.publicclassInner{}

6.publicstaticvoidmain(String[]argv){

7.Outero=newOuter();

8.//Line8

9.}

10.}

WhichinstantiatesaninstanceofInner?

A.newInner();//Atline3

B.newInner();//Atline8

C.newo.Inner();//Atline8

D.newOuter.Inner();//Atline8//newOuter().newInner()

QUESTIONNO:5

WhichmethodisusedbyaservlettoplaceitssessionIDinaURLthatiswrittentotheservlet’sresponseoutputstream?

A.TheencodeURLmethodoftheHttpServletRequestinterface.

B.TheencodeURLmethodoftheHttpServletResponseinterface.

C.TherewriteURLmethodoftheHttpServletRequestinterface.

D.TherewriteURLmethodoftheHttpServletResponseinterface.

QUESTIONNO:6

Whichtwoareequivalent?(Choosetwo)

A.

B.

C.

D.

E.

F.

G.

QUESTIONNO:7

Whichofthefollowingstatementsregardingthelifecycleofasessionbeanarecorrect?

1.java.lang.IllegalStateExceptionisthrownifSessionContext.getEJBObject()isinvokedwhenastatefulsessionbeaninstanceispassivated.

2.SessionContext.g