nerdexam
Oracle

1Z0-895 · Question #22

A developer writes a stateful session bean FooBean with one remote business interface Foo. Foo defines an integer / setter method pair implemented as: 10. private int value; 11. public void setValue…

The correct answer is D. Foo1.getValue () = = 1 and foo2.getValue() = = 1. Foo1 and Foo2 references the same object.

Performance Tuning

Question

A developer writes a stateful session bean FooBean with one remote business interface Foo. Foo defines an integer / setter method pair implemented as: 10. private int value; 11. public void setValue (int i) {value = i; } 12. public int getValue () {return value; } A session bean ClientBean has a business method doSomething and an ejb-ref with ejb-ref-name "fooRef" that is mapped to FooBean's Foo interface. 11. @Resource private SessionContext SessionCtx; 12. public void doSomething () { 13. Foo foo1 = (Foo) sessionCtx.lookup("fooRef"); 14. Foo foo2 = (Foo) sessionCtx.lookup("fooRef"); 15. foo1.setvalue(1); Which statement is true after the code at line 15 completes?

Options

  • AFoo1.getValue () = = 0 and foo2.getValue() = = 0
  • BFoo1.getValue () = = 0 and foo2.getValue() = = 1
  • CFoo1.getValue () = = 1 and foo2.getValue() = = 0
  • DFoo1.getValue () = = 1 and foo2.getValue() = = 1

How the community answered

(27 responses)
  • A
    4% (1)
  • B
    7% (2)
  • C
    15% (4)
  • D
    74% (20)

Explanation

Foo1 and Foo2 references the same object.

Topics

#stateful session bean#ejb-ref#bean identity#state isolation

Community Discussion

No community discussion yet for this question.

Full 1Z0-895 Practice