Online Access Free 1Z0-850 Exam Questions

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

Given:
1 1. class Cat {
1 4. public static void main(String [] args) {
1 5. Cat c1 = new Cat();
1 6. Cat c3 = new Cat();
1 7. Cat c2 = c1;
1 8. Cat c4 = c3;
1 9. c1 = c4;
2 0. c4 = c2;
2 1. if (c1 == c2) System.out.print("c1 == c2 ");
2 2. if (c1 == c3) System.out.print("c1 == c3 ");
2 3. }
2 4. }
What is the result?

• A.No output is produced.
• B.c1 == c2
• C.c1 == c3
• D.c1 == c2 c1 == c3
• E.The output is unpredictable.

Given:
1. interface Movable {
2. void move();
3. void stop();
4. }
Which is valid?

• A.public class Bicycle extends Movable {
  public void move() { /*...*/ }
  public void stop() { /*...*/ }
• B.public class Bicycle implements Movable {
  public void move() { /*...*/ }
• C.public class Bicycle implements Movable {
  public void move() { /*...*/ }
  public void stop() { /*...*/ }
• D.public class Bicycle implements Movable {
  void move() { /*...*/ }
  void stop() { /*...*/ }

Which three classes are part of the java.io package? (Choose three.)

• A.Socket
• B.String
• C.URL
• D.BufferedWriter
• E.Reader
• F.File

Which two are characteristics of applets? (Choose two.)

• A.Applet security is provided by Java's sandbox security model.
• B.Because code is downloaded at the time of execution, applets are easy to distribute.
• C.Applets can be developed quickly using HTML/JavaScript tags.
• D.Because it executes on the web server, the client does NOT incur the processing overhead.