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1. import java.util.*;  2. class ForInTest {  3. static List list = new ArrayList();  4.  5. static List getList() { return list; }  6.  7. public static void main(String [] args) {  8. list.add("a"); list.add("b"); list.add("c");  9. // insert code here  10. System.out.print(o);  11. }  12. } 第 9 行插入哪一项将输出 abc?() 

  • A、for(char o: list)
  • B、for(Object o: getList())
  • C、for(Object o: getList();)
  • D、for(Object o: o.getList())

参考答案

更多 “ 1. import java.util.*;  2. class ForInTest {  3. static List list = new ArrayList();  4.  5. static List getList() { return list; }  6.  7. public static void main(String [] args) {  8. list.add("a"); list.add("b"); list.add("c");  9. // insert code here  10. System.out.print(o);  11. }  12. } 第 9 行插入哪一项将输出 abc?() A、for(char o: list)B、for(Object o: getList())C、for(Object o: getList();)D、for(Object o: o.getList())” 相关考题
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考题 单选题现有:  import java.util.*;      class AddStuff2  {  public static void main(String  []  args)  {      TreeSett=new TreeSet();      if (t.add("one"))      if (t.add("two"))     if (t.add ("three"))  add("four");  for (String s  :  t)      System.out.print (s);     }      }      结果为:()A  oneB  one three twoC  one two threeD  one two three fourE  four one three twoF 编译失败

考题 单选题Given a class Repetition:  1. package utils;  2.  3. public class Repetition {  4. public static String twice(String s) { return s + s; }  5. }  and given another class Demo:  1. // insert code here 2.  3. public class Demo {  4. public static void main(String[] args) {  5. System.out.println(twice(”pizza”));  6. }  7. }  Which code should be inserted at line 1 of Demo.java to compile and run Demo to print“pizzapizza”?()A  import utils.*;B  static import utils.*;C  import utils.Repetition.*;D  static import utils.Repetition. *;E  import utils.Repetition.twice();F  import static utils.Repetition.twice;G  static import utils.Repetition.twice;

考题 单选题现有:  import java.util.*;      class  ScanStuff  {  public  static void main (String  []  args)  {     String S= "x,yy,123";  Scanner sc = new Scanner (s);      while  (sc.hasNext())  System.out.print (sc.next()  +" ");     }      }  结果是什么?()A   x yyB  x,yy,123C   x yy 123D   x,yyE 编译失败F 运行的时候有异常抛出