A.Theprogramrunsandprintsnothing.
B.Theprogramrunsandprints“Equal”
C.Anerroratline5causescompilationtofail.
D.Theprogramrunsbutabortswithanexception.
第1题:
A.Theprogramrunsandprints“Hello”
B.Anerrorcausescompilationtofail.
C.Theprogramrunsandprints“Helloworld!”
D.Theprogramrunsbutabortswithanexception.
第2题:
下列代码的执行结果是()。publicclasstest5{publicstaticvoidmain(Stringargs[]){Strings1=newString("hello");Strings2=newString("hello");System.out.prim(s1==s2);System.out.print(",");System.out.println(s1.equals(s2));}
A.true,false
B.true,true
C.false,true
D.false,false
第3题:
当执行下面代码时,会输出( )。 Boolean b1 = new Boolean(true); Boolean b2 = new Boolean(true); if (b1 == b2) if (bi.equals(b2)) System. out.printin ("a"); else System. out. println ("b"); else if (bi.equals(b2)) System. out.println ("c"); else System. out.printIn("d");
A.a
B.b
C.c
D.d
第4题:
A.Theoutputis“Equal”
B.Theoutputin“NotEqual”
C.Anerroratline5causescompilationtofall.
D.Theprogramexecutesbutdoesnotprintamessage.
第5题:
下列代码的执行结果是______。 public class ex55 { public static void main(String args[] ) { String s1=new String("hello"); String s2=new String("hello"); System.out.print (s1==s2); System.out.print (","); System.out.println (s1.equals (s2)); } }
A.true, false
B.true, true
C.false, true
D.false, false