case‘M’:System.out.println(“OK”);break;
Document:Java_Sem1_2009_Progr1_Exam.docAuthor:DrAlexBezenSaveDate:05/11/2009Page4of12
RMITUniversity
CreateCodeforApplications
default:System.out.println(“Bad”);break;}}}
(4marks)7Whatwillbeanoutputofthefollowingprogram?
publicclassStringDemo{publicstaticvoidmain(String[]args){Strings1=newString(“Kate”);Strings2=newString(“Ken”);Strings3=s1;Strings4=s3;Strings5=“Tom”;Strings6=“Ken”;Strings7=newString(“Ken”);Strings8=“Tom”;Strings9=newString(“kate”);if(s1.equals(s2)){System.out.println(“s1equalstos2”);}else{System.out.println(“s1notequalstos2”);}if(s4.equals(s1)){System.out.println(“s4equalstos1”);}else{System.out.println(“s4notequalstos1”);}if(s2.equals(s7)){System.out.println(“s2equalss7”);
Document:Java_Sem1_2009_Progr1_Exam.docAuthor:DrAlexBezenSaveDate:05/11/2009Page5of12
(12marks)
RMITUniversity
CreateCodeforApplications
}else{System.out.println(“s2notequalstos7”);}if(s1.equals(s6)){System.out.println(“s1equalss6”);}else{System.out.println(“s1notequalstos6”);}if(s4==s1){System.out.println(“Referenceofs4equalstoreferenceofs1”);}else{System.out.println(“Referenceofs4notequalstoreferenceofs1”);}if(s2==s7){System.out.println(“Referenceofs2equalstoreferenceofs7”);}else{System.out.println(“Referenceofs2notequalstoreferenceofs7”);}if(s8==s5){System.out.println(“Referenceofs8equalstoreferenceofs5”);}else{System.out.println(“Referenceofs8notequalstoreferenceofs5”);}if(s1.equalsIgnoreCase(s9)){System.out.println(“s1equalss9”);
Document:Java_Sem1_2009_Progr1_Exam.docAuthor:DrAlexBezenSaveDate:05/11/2009Page6of12
RMITUniversity
CreateCodeforApplications
}intn=s1.compareTo(s2);System.out.println(“n=“+n);if(n==0){System.out.println(“s1equalstos2”);}elseif(n<0){System.out.println(“s1precedess2”);}elseif(n>0){System.out.println(“s2precedess1”);}System.out.println(“Thelengthofstrings6“+s6.length());charc=s5.charAt(2);System.out.println(“ThecharacterinthesecondpositionofStrings5“+c);}}
8
Whatwillbeanoutputofthefollowingprogramifauserenters4numbers{5,5,4,3