Free Oracle 1z1-815 Exam Dumps Questions & Answers

Which statement will emoty the contents of a StringBuilder variable named sb?

• A.sb.delete(0, sb.size());
• B.sb.removeAll();
• C.sb.delete(0, sb.length());
• D.sb.deleteAll();

Given:

What is the output?

• A.200
• B.Exception
• C.300
• D.100

Given:

Which two allow a.Mainto allocate a new Person? (Choose two.)

• A.In Line 2, add extends Person to the Main class
  public class Main extends Person {
  and change Line 3 to create a new Main object
  Person person = new Main();
• B.In Line 1, change the access modifier to public
  public Person() {
• C.In Line 2, change the access modifier to protected protected class Main {
• D.In Line 1, remove the access modifier
  Person() {
• E.In Line 1, change the access modifier to private
  private Person() {

Given the for loop construct:
for ( expr1 ; expr2 ; expr3 ) {
statement;
}
Which two statements are true?

• A.The expression expr1 is optional.
  it initializes the loop and is evaluated once, as the loop begin.
• B.The expression expr3 must be present.
  It is evaluated after each iteration through the loop.
• C.This is not the only valid for loop construct; there exits another form of for loop constructor.
• D.When expr2 evaluates to false, the loop terminates.
  It is evaluated only after each iteration through the loop.

Given:

Which expression when added at line 1 will produce the output of 1.17?

• A.float z = (float)(Math.round((float)x/y*100)/100);
• B.float z = Math.round((int)(x/y),2);
• C.float z = Math.round((float)x/y,2);
• D.float z = Math.round((float)x/y*100)/(float)100;