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Oracle 1Z0-850 Exam Overview:

Oracle 1Z0-850 Exam Syllabus Topics:

Answers to the Most Common Questions About Oracle Java Standard Edition 5 and 6, Certified Associate

Oracle Java Standard Edition 5 and 6, Certified Associate Sample Questions:

Question 1

Which is true about MIDlets?

A. The only API used to create MIDlets is the MIDP API.
B. MIDlet devices are not required to allow applications to be uninstalled.
C. Devices that support MIDlets must allow the MIDlets to access the device's low-level functions.
D. Devices that run MIDlets must provide software that manages wireless downloading of applications.

Question 2

You are asked to create a Dog class that exposes the Dog class String name and int breed to other code as read-only attributes, provides encapsulation, and adheres to the standard
JavaBeans naming conventions.
Which approach implements these requirements?

A. Provide private name() and private breed() methods in the Dog class, and mark the name and breed instance variables public.
B. Provide public getName()/setName() and public getBreed()/setBreed() methods in the
Dog class, and mark the name and breed
instance variables private.
C. Provide private getName() and private getBreed() methods in the Dog class, and mark the name and breed instance variables private.
D. Provide public name() and public breed() methods in the Dog class, and mark the name and breed instance variables private.
E. Provide public getName() and public getBreed() methods in the Dog class, and mark the name and breed instance variables private.

Question 3

Given:
1. class Test {
2 . public static void main(String args[]) {
3 . String str = new String("Welcome");
4 . // insert code here
5 . }
6 . }
Which, inserted at line 4, produces the output true?

A. System.out.println(str.indexOf("W"));
B. System.out.println(str.trim());
C. System.out.println(str.indexOf(1));
D. System.out.println(str.startsWith('W'));
E. System.out.println(str.startsWith("W"));

Question 4

Click the Exhibit button. Which two are true? (Choose two.)

A. A Flurb can be associated with itself, but it also could be associated with a different
Flurb.
B. There must always be an even number of Flurb instances.
C. There can only be one instance of the Flurb class.
D. Every Flurb is associated with exactly one Flurb.
E. Every Flurb contains a reference to itself.

Question 5

Click the Exhibit button.
Which code correctly implements the association between A and B?

A. class A {
private B[] b;
}
class B {
private A a;
}
B. class A {
private B[] b;
}
class B { }
C. class A {
private B b;
}
class B {
private A[] a;
}
D. class A { }
class B {
private A a;
}
E. class A {
private B b;
}
class B { }
F. class A { }
class B {
private A[] a;
}

Solutions: