JAVA模拟题:TestoftheJavaSkill(2)
文章作者 100test 发表时间 2007:03:14 17:03:22
来源 100Test.Com百考试题网
Question 9:
What code placed after the comment:
// Start For loop
would populate the elements of the array ia[] with values of the variables i ?
public class Lin{
public static void main(String argv[]){
Lin l = new Lin().
l.amethod().
}
public void amethod(){
int ia[] = new int[4].
// Start For loop
{
ia[i] = i.
System.out.println(ia[i]).
}
}
}
A. for(int i=0. i
B. for (int i=0. i
C. for(int i=0. i<4. i )
D. for(int i=0. i
Question 10:
Consider the following code:
Integer s = new Integer(9).
Integer t = new Integer(9).
Long u = new Long(9).
Which test would return true?
A. (s==u)
B. (s==t)
C. (s.equals(t))
D. (s.equals(9))
E. (s.equals(new Integer(9))
Question 11:
Which of the following is successfully create an instance of the Vector class and add an element?
A. Vector v = new Vector(99).
v[1]=99.
B. Vector v = new Vector().
v.addElement(99).
C. Vector v = new Vector().
v.add(99).
D. Vector v = new Vector(100).
v.addElement(“99”).
Question 12:
What will happen when you attempt to compile and run the following code?
class Base{
private void amethod(int iBase){
System.out.println(“Base.amethod”).
}
}
class Over extends Base{
public static void main(String argv[]){
Over o = new Over().
int iBase=0.
o.amethod(iBase).
}
public void amethod(int iOver){
System.out.println(“Over.amethod”).
}
}
A. Compile time error complaining that Base.amethod is private
B. Runtime error complaining that Base.amethod is private
C. Output of Base.amethod
D. Output of Over.amethod