Online Access Free 1Z0-851 Exam Questions

Given:
1.package geometry;
2.public class Hypotenuse {
3.public InnerTriangle it = new InnerTriangle();
4.class InnerTriangle {
5.public int base;
6.public int height;
7.}
8.}
Which statement is true about the class of an object that can reference the variable base?

• A.The class must belong to the geometry package.
• B.No class has access to base.
• C.The class must be a subclass of the class Hypotenuse.
• D.It can be any class.

Given:
1.public class Donkey {
2.public static void main(String[] args) {
3.boolean assertsOn = false;
4.assert (assertsOn) : assertsOn = true;
5.if(assertsOn) {
6.System.out.println("assert is on");
7.}
8.}
9.}
If class Donkey is invoked twice, the first time without assertions enabled, and the second time
with assertions enabled, what are the results?

• A.no output
  assert is on
• B.assert is on
  An AssertionError is thrown.
• C.no output
• D.no output
  An AssertionError is thrown.
• E.assert is on

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Correct Answer:

Which two code fragments correctly create and initialize a static array of int elements? (Choose two.)

• A.static final int[] a = { 100,200 };
• B.static final int[] a = new int[2]{ 100,200 };
• C.static final int[] a;
  static { a=new int[2]; a[0]=100; a[1]=200; }
• D.static final int[] a;
  static void init() { a = new int[3]; a[0]=100; a[1]=200; }

Given:
11.public static void main(String[] args) {
12.try {
13.args = null;
14.args[0] = "test";
15.System.out.println(args[0]);
16.} catch (Exception ex) {
17.System.out.println("Exception");
18.} catch (NullPointerException npe) {
19.System.out.println("NullPointerException");
20.}
21.}
What is the result?

• A.Exception
• B.Compilation fails.
• C.test
• D.NullPointerException