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السؤال #1
What is the result?
A. NullPointerException is thrown at line 4
B. NullPointerException is thrown at line 10
C. A compilation error occurs
D. Hello
عرض الإجابة
اجابة صحيحة: A

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السؤال #2
What must be added in line 1 to compile this class?
A. catch(IOException e) { }
B. catch(FileNotFoundException | IndexOutOfBoundsException e) { }
C. catch(FileNotFoundException | IOException e) { }
D. catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }
E. catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }
عرض الإجابة
اجابة صحيحة: B
السؤال #3
What is the type of the local variable x?
A. Character
B. char
C. String[ ]
D. String
عرض الإجابة
اجابة صحيحة: C
السؤال #4
Which interface in the java.util.function package will return a void return type?
A. Supplier
B. Predicate
C. Function
D. Consumer
عرض الإجابة
اجابة صحيحة: D
السؤال #5
Consider this method declaration: A) “SET SESSION AUTHORIZATION “ + user B) “SET SESSION AUTHORIZATION “ + stmt.enquoteIdentifier(user) Is A or B the correct replacement for and why?
A. A, because it sends exactly the value of user provided by the calling code
B. B, because enquoting values provided by the calling code prevents SQL injection
C. A and B are functionally equivalent
D. A, because it is unnecessary to enclose identifiers in quotes
E. B, because all values provided by the calling code should be enquoted
عرض الإجابة
اجابة صحيحة: D
السؤال #6
Which two allow a.Main to allocate a new Person? (Choose two.)
A. In Line 1, change the access modifier to privateprivate Person() {
B. In Line 1, change the access modifier to publicpublic Person() {
C. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
D. In Line 2, change the access modifier to protectedprotected class Main {
E. In Line 1, remove the access modifierPerson() {
عرض الإجابة
اجابة صحيحة: BC
السؤال #7
Assume the file on path does not exist. What is the result?
A. The compilation fails
B. /u01/work/filestore
C. Exception
D. /u01/work/filestore
عرض الإجابة
اجابة صحيحة: AB
السؤال #8
Which two interfaces can be used in lambda expressions? (Choose two.)
A. MyInterface1
B. MyInterface3
C. MyInterface5
D. MyInterface2
E. MyInterface4
عرض الإجابة
اجابة صحيحة: ABH
السؤال #9
and What is the result?
A. A NullPointerException is thrown at run time
B. The compilation fails
C. 1Null null
D. 111
E. A ClassCastException is thrown at run time
عرض الإجابة
اجابة صحيحة: B
السؤال #10
Given the code fragment: What is the output?
A. The compilation fail
B. [-1, -2, -3]
C. [-3, -2, -1]
D. A runtime exception is thrown
عرض الإجابة
اجابة صحيحة: BD
السؤال #11
Which two lines of code when inserted in line 1 correctly modifies instance variables? (Choose two.)
A. setCCount(c) = cCount;
B. tCount = tCount;
C. setGCount(g);
D. cCount = setCCount(c);
E. aCount = a;
عرض الإجابة
اجابة صحيحة: AB
السؤال #12
Which loop incurs a compile time error?
A. the loop starting line 11
B. the loop starting line 7
C. the loop starting line 14
D. the loop starting line 3
عرض الإجابة
اجابة صحيحة: F
السؤال #13
Which command line runs the main class com.acme.Main from the module com.example?
A. java --module-path mods com
B. java –classpath com
C. java --module-path mods -m com
D. java -classpath com
عرض الإجابة
اجابة صحيحة: BFG

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