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Question ID 3859

Given:
11.    public class Commander {
12.    public static void main(String[] args) {
13.    String myProp = /* insert code here */
14.    System.out.println(myProp);
15.    }
16. }
and the command line:
java -Dprop.custom=gobstopper Commander Which two, placed on line 13, will produce the output gobstopper? (Choose two.)
 

Option A

A.    System.load("prop.custom");
 

Option B

B.    System.getenv("prop.custom");
 

Option C

C.    System.property("prop.custom");
 

Option D

D.    System.getProperty("prop.custom");
 

Option E

E.    System.getProperties().getProperty("prop.custom");
 

Correct Answer D,E
Explanation


Question ID 3860

Given:
1.    interface DoStuff2 {
2.    float getRange(int low, int high); }
3.    
4.    interface DoMore {
5.    float getAvg(int a, int b, int c); }
6.    
7.    abstract class DoAbstract implements DoStuff2, DoMore { }
8.    
9.    class DoStuff implements DoStuff2 {
10.    public float getRange(int x, int y) { return 3.14f; } }
11.    
12.    interface DoAll extends DoMore {
13.    float getAvg(int a, int b, int c, int d); } What is the result?

 

Option A

A.    The file will compile without error.
 

Option B

B.    Compilation fails. Only line 7 contains an error.
 

Option C

C.    Compilation fails. Only line 12 contains an error.
 

Option D

D.    Compilation fails. Only line 13 contains an error.
 

Correct Answer A
Explanation

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