black

SCJP程序员认证考试

登录

单项选择题

1. public class X ( 
2. public object m ()  { 
3. object o = new float (3.14F); 
4. object [] oa = new object [1]; 
5. oa[0]= o; 
6. o = null; 
7. return oa[0]; 
8. } 
9. }  
When is the float object created in line 3, eligible for garbage collection?()  

A. Just after line 5
B. Just after line 6
C. Just after line 7 (that is, as the method returns)
D. Never in this method.

相关考题

单项选择题 1. public class returnIt (  2. returnType methodA(byte x, double y) (  3. return (short) x/y * 2;  4. )  5. )   What is the valid returnType for methodA in line 2?()

单项选择题 class super (  public int I = 0;  public super (string text) (  I = 1  )  )  public class sub extends super (  public sub (string text)   ( i= 2  )  public static void main (straing args[])   (  sub sub = new sub (“Hello”);  system.out. PrintIn(sub.i);  )    )   What is the result?()

单项选择题 byte [] arry1, array2[];  byte array3 [][];  byte[][] array4;   If each array has been initialized, which statement will cause a compiler error?()

All Rights Reserved 版权所有©建筑考试题库(jzkao.com)

备案号:湘ICP备2020024380号-3