public class Test{public static void main（String[]args）{intx=5；boolean b1=true；boolean b2=

public class ClassA{public int getValue（）{int value=0；boolean setting=true；String title="Hello"；if（value||（setting && title=="Hello"））{return 1；}if（value==1&title.equals（"Hello"））{return 2；}}}And：ClassA a=new ClassA（）；a.getValue（）；What is the result？（）

A.1

B.2

C.Compilation fails.

D.The code runs with no output.

E.An exception is thrown at runtime.

public void testIfA（）{if（testIfB（"True"））{System.out.println（"True"）；}else{System.out.println（"Nottrue"）；}}public Boolean testIfB（Stringstr）{return Boolean.valueOf（str）；}What is the result when method testIfA is invoked？（）

A.True

B.Nottrue

C.Anexceptionisthrownatruntime.

D.Compilationfailsbecauseofanerroratline12.

E.Compilationfailsbecauseofanerroratline19.

public static void main（String[]args）{Integer i=new Integer（1）+new Integer（2）；switch（i）{case3：System.out.println（"three"）；break；default：System.out.println（"other"）；break；}}Whatistheresult？（）

A.three

B.other

C.Anexceptionisthrownatruntime.

D.Compilationfailsbecauseofanerroronline12.

E.Compilationfailsbecauseofanerroronline13.

F.Compilationfailsbecauseofanerroronline15.

public static void main（String[]args）{String str="null"；if（str==null）{System.out.println（"null"）；}else（str.length（）==0）{System.out.println（"zero"）；}else{System.out.println（"some"）；}}What is the result？（）

A.null

B.zero

C.some

D.Compilationfails.

E.Anexceptionisthrownatruntime.