Java認證考試章節(jié)練習(2019.04.02)

Which statement is true？（）

public class ConstOver 
{  
public ConstOver （int x， int y， int z） {  
} 
}  
Which two overload the ConstOver constructor？ （）

Which is the earliest line in the following code after which the object created on the line marked （0） will be a candidate for being garbage collected， assuming no compiler optimizations are done？ （） 
public class Q76a9 {  
static String f（） {  
String a = "hello"；  
String b = "bye"； // （0） 
 String c = b + "!"； // （1）  
String d = b；  b = a； // （2）  
d = a； // （3）  
return c； // （4）  }  
public static void main（String args[]） { 
 String msg = f（）；  
System.out.println（msg）； // （5） 
 }  
}  

Given classes defined in two different files： 
1. package util； 
2. public class BitUtils { 
3. private static void process（byte[] b） { } 
4. } 
1. package app； 
2. public class SomeApp { 
3. public static void main（String[] args） { 
4. byte[] bytes = new byte[256]； 
5. // insert code here 
6. } 
7. } 
What is required at line 5 in class SomeApp to use the process method of BitUtils？（）