Oracle 1z0-813 問題集

質問 1：
Given:

Which code fragment, when inserted at line n1, results in the following output?
A. double totalprise =prd. Stream{)
Rduce(0.0, {p1, p2 ) -> p1 + p2);
B. double totalprise =prd. Stream()
*Parallel ()
*Reduce {0.0, {p1,p2)-> p1. Getprice{}+ p2. Getprice {})
C. double totalprise =prd. Stream()
* Reduce (0,0 Double::sun) ;
D. double totalprise =prd. Stream{)
*Parallel ()
*aap { -> p.getprice{})
* reduce (0.0, (p1, p2) -> p1 + p2) ;
正解：A

質問 2：
Given the code fragment:

What is the result, if the filesalesreport. dat does not exist?
A. class Java.ia.IOException
B. class java.ia. flilenNOlfoundException
C. Compilation fails only at line 13.
D. Compilation fails at line 6 and 13.
E. Compilation fails only at line 6.
正解：C

質問 3：
Which two states are valid for a watch key?
A. Signalled
B. Ready
C. Not Runnable
D. Does not Exist
E. Runnable
正解：A,B

質問 4：
Given the code fragment:

What change must you make to enable the code to print the following output?
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
A. Replication line 8 with
.pook(o -> 1 myList. Add(c) ; )}.
B. Replication line 13 with
forEachorder{c -> system.out.print { c + " "} ;.
C. Replication line 12 with
Parallelstrees{).
D. Replication line 7 with
Stream{).
正解：D

質問 5：
Given the code fragment:

Which is the valid definition for the crecter interface to enable the code fragment to print ksthy welcome!?
A. public interface greater {
Public String greet(String name) ;
)
B. public interface greater <T> {
Public static String greep (T , name) ;
)
C. public interface greater {
Private string greet {string name};
)
D. public interface greater {
Public default String greet{ String name} {
Return name;
}
Public String greet (String name, String salute);
)
正解：A