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最新的 Oracle Java 1z1-829 免費考試真題：

問題 #1

Given the code fragment:

abstract sealed interface SInt permits Story, Art { default String getTitle() { return "Book Title" ; }
}
Which set of class definitions compiles?

A. Non-sealed interface story extends SInt {}
Non-sealed interaface Art extends Sint {}
B. Interace story extends STnt {}
Interface Art extends SInt {}
C. Sealed interface Storty extends sInt {}
Non-sealed class Art implements Sint {}
D. Public interface story extends sInd {}
Public interface Art extends SInt {}
E. Non-sealed interface story extends SInt {}
Class Art implements Sint {}

問題 #2

Given the code fragment:

Which two statements at Line nl independently enable you to print 1250?

A. Integer res = 250 + integer . valueof (s);
B. Integer res = 250 + integer.parseint (s)
C. Integer res = 250;
D. Integer res = 250 + s:
E. Integer res = 250 + integer (s2):
F. Integer res= 250 + s2;

問題 #3

Given:

What is the result?

A. Tablechair Tablechair
B. wTableChair TableChair
C. A RuntimeException is thrown
D. Compilation fails
E. Wtablechair tableChair

問題 #4

Given the code fragment:

What is the result?

A. 1
2
-4
B. 0
B 2
C -2
C. 1
1
1
D. 2
2
0

問題 #5

Which statement is true?

A. The lock () method returns a boolean indicator immediately if it has managed to acquire the lock, otherwise it waits for the lock acquisition.
B. The tryLock () method returns a boolean indicator immediately regardless if it has or has not managed to acquire the lock.
C. The Lock () method returns a boolean indicator immediately regardless if it has or has not managed to acquire the lock
D. The tryLock () method returns a boolean indicator immediately if it has managed to acquire the lock, otherwise it waits for the lock acquisition.

問題與答案：