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خذ اختبارات أخرى عبر الإنترنت
السؤال #1
Which code, when inserted at one or more marked positions, would allow classes B and C to compile?
A. @Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3
B. @Override // position 2public void z() { } // position 3
C. implements A // position 1@Override // position 2
D. public void z() { } // position 3
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اجابة صحيحة: A
السؤال #2
Which two are correct? (Choose two.)
A. Option A
B. Option B
C. Option C
D. Option D
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اجابة صحيحة: D
السؤال #3
Which is true about line 1?
A. If the value is not present, a NoSuchElementException is thrown at run time
B. It always executes the System
C. If the value is not present, a NullPointerException is thrown at run time
D. If the value is not present, nothing is done
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اجابة صحيحة: CD
السؤال #4
It is required that if p instanceof Pair then p.isValid() returns true. Which is the smallest set of visibility changes to insure this requirement is met?
A. setLeft and setRight must be protected
B. left and right must be private
C. isValid must be public
D. left, right, setLeft, and setRight must be private
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اجابة صحيحة: CD
السؤال #5
When run and all three files exist, what is the state of each reader on Line 1?
A. All three readers are still open
B. All three readers have been closed
C. The compilation fails
D. Only reader1 has been closed
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اجابة صحيحة: A
السؤال #6
What is the result?
A. b1
B. 2
C. b2
D. 1
E. b3
F. 3 G
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اجابة صحيحة: F
السؤال #7
Given this requirement: Module vehicle depends on module part and makes its com.vehicle package available for all other modules. Which module-info.java declaration meets the requirement?
A. Option A
B. Option B
C. Option C
D. Option D
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اجابة صحيحة: D
السؤال #8
What is the result?
A. JoeMarry
B. Joenull
C. nullnull
D. nullMary
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اجابة صحيحة: AC
السؤال #9
What is the result?
A. [0,0] = Red[0,1] = White[1,0] = Black[1,1] = Blue[2,0] = Yellow[2,1] = Green[3,0] = Violet
B. [0,0] = Red[1,0] = Black[2,0] = Blue
C. java
D. [0,0] = Red[0,1] = White[1,0] = Black[2,0] = Blue[2,1] = Yellow[2,2] = Green[2,3] = Violet
عرض الإجابة
اجابة صحيحة: C
السؤال #10
What makes Java dynamic?
A. At runtime, classes are loaded as needed, and new code modules can be loaded on demand
B. The runtime can process machine language sources as well as executables from different language compilers
C. The Java compiler uses reflection to test if class methods are supported by resources of a target platform
D. The Java compiler preprocesses classes to run on specific target platforms
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اجابة صحيحة: B
السؤال #11
LocalDate d1 = LocalDate.of(1997,2,7); DateTimeFormatter dtf = DateTimeFormatter.ofPattern( /*insert code here*/ ); System.out.println(dtf.format (d1)); Which pattern formats the date as Friday 7th of February 1997?
A. “eeee dd+”th of”+ MMM yyyy”
B. “eeee dd'th of' MMM yyyy”
C. “eeee d+”th of”+ MMMM yyyy”
D. “eeee d’th of’ MMMM yyyy”
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اجابة صحيحة: AB
السؤال #12
and Which code fragment on line 1 makes the s1 set contain the names of all employees born before January 1, 1989?
A. Option A
B. Option B
C. Option C
D. Option D
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اجابة صحيحة: C
السؤال #13
Given the declaration: Examine this code fragment: /* Loc1 */ class ProcessOrders { ... } Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)
A. @Resource(priority=100)
B. @Resource(priority=0)
C. @Resource(name=“Customer1”, priority=100)
D. @Resource(name=“Customer1”)
E. @Resource
عرض الإجابة
اجابة صحيحة: D
السؤال #14
Which describes an aspect of Java that contributes to high performance?
A. Java prioritizes garbage collection
B. Java has a library of built-in functions that can be used to enable pipeline burst execution
C. Java monitors and optimizes code that is frequently executed
D. Java automatically parallelizes code execution
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اجابة صحيحة: BE
السؤال #15
Given an application with a main module that has this module-info.java file: Which two are true? (Choose two.)
A. A module providing an implementation of country
B. A module providing an implementation of country
C. An implementation of country
D. To compile without an error, the application must have at least one module in the module source path that provides an implementation of country
E. To run without an error, the application must have at least one module in the module path that provides an implementation of country
عرض الإجابة
اجابة صحيحة: C
السؤال #16
Which option should you choose to enable the code to print Something happened?
A. Add extends GeneralException on line 1
B. Add extends SpecificException on line 1
C. Add extends Exception on line 1
D. Add extends Exception on line 1
عرض الإجابة
اجابة صحيحة: D

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