out of 13)__________ people.

out of 13)__________ people.


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public class Pet{     private String name;     public Pet(){  System.out.print(1);    }  public Pet(String name){        System.out.print(2);    } }  public class Dog extends Pet{     public Dog(String name){        System.out.print(3);    } }  执行new Dog(“棕熊”);后程序输出是哪项?() A、 23B、 13C、 123D、 321

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多选题10.publicclassBar{ 11.staticvoidfoo(int...x){ 12.//insertcodehere 13.} 14.} Which two code fragments,inserted independently at line1 2,will allow the class to compile()Aforeach(x)System.out.println(z);Bfor(intz:x)System.out.println(z);Cwhile(x.hasNext())System.out.println(x.next());Dfor(inti=0;i

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单选题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?()AthreeBotherCAnexceptionisthrownatruntime.DCompilationfailsbecauseofanerroronline12.ECompilationfailsbecauseofanerroronline13.FCompilationfailsbecauseofanerroronline15.

多选题10. public class Bar {  11.static void foo(int...x) {  12. // insert code here  13. }  14. }  Which two code fragments, inserted independently at line 12, will allow the class to compile?()Aforeach(x) System.out.println(z);Bfor(int z : x) System.out.println(z);Cwhile( x.hasNext()) System.out.println( x.next());Dfor( int i=0; i x.length; i++ ) System.out.println(x[i]);