单项选择题
int x=0; int y=10; do{l3.y--; ++x; }while(x<5); System.out.print(x+","+y); What is the result?()
A.5,6 B.5,5 C.6,5 D.6,6
public static void main(String[]args){ String str="null...
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.
public static void main(String[]args){ Integer i=new In...
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 void testIfA(){ if(testIfB("True")){ System.out....
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.