Online Access Free 1Z0-850 Exam Questions

Which three are legal ways to declare and initialize an instance variable? (Choose three.)

• A.static Integer f = new Integer(42);
• B.static int x = 42;
• C.public Integer f = null;
• D.public int x = null;
• E.public int x = 'c';
• F.public Integer f = new Integer(42);

Which is NOT associated with the web tier in a J2EE web-based application?

• A.JavaMail
• B.HTML
• C.message-driven beans
• D.JNDI
• E.JavaBeans

Click the Exhibit button.
Which is true?

• A.Both diagrams are invalid.
• B.Diagrams A and B are both valid, but have different meanings.
• C.Only diagram B is valid.
• D.Diagrams A and B are equivalent.
• E.Only diagram A is valid.

Given:
1 . class Test {
2 . public static void main(String[] args) {
3 . int num = 1;
4 . for (num = 0; num < 3; ++num ) {
5 . num *= 2;
6 . }
7 . System.out.println("num = " + (num++));
8 . }
9 . }
What is the result?

• A.num = 5
• B.num = 3
• C.Compilation fails.
• D.num = 2
• E.num = 4

Given:
1 . public interface Player {
2 . // insert code here
3 . // insert code here
4 . }
5 . class F implements Player {
6 . public void play(){
7 . // ...
8 . }
9 . public void stop(){
1 0. // ...
1 1. }
1 2. }
Which two, inserted independently at lines 2 and 3, allow the code to compile? (Choose two.)

• A.private void play();
  private void stop();
• B.public void play();
  public void stop();
• C.void play();
  int stop();
• D.static void play();
  static void stop();
• E.void play();
  void stop();
• F.final void play();
  final void stop();