Oracle 1Z0-808 Online Practice Questions and Exam Preparation

Oracle 1Z0-808 Online Questions & Answers

• Question 261:

  Given:

  

  Which two code fragments can be inserted at line n1?

  A. String str = "Java";
  B. for(int iVal = 0; iVal
  C. Test() {}
  D. package p1;
  E. import java.io.*;
  A. String str = "Java";
  C. Test() {}

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  Explanation/Reference:

  The correct answer is AC B -> You can't put a for loop outside the main method D -> This one is very wrong, you can only declare the package in the first line of code E -> This one is as wrong as the letter D, you can only import one package before instantiating the class and if you have a package declared, the declaration can only be made between it and the class declaration, anything outside of that is wrong

• Question 262:

  Given:

  

  Given the code fragment:

  

  Which two sets of actions, independently, enable the code fragment to print Fit?

  A. At line n1 insert: import clothing.Shirt; At line n2 insert: String color = getColor();
  B. At line n1 insert: import clothing.*; At line n2 insert: String color = Shirt.getColor();
  C. At line n1 insert: import static clothing.Shirt.getcolor; At line n2 insert: String color = getColor();
  D. At line n1 no changes required. At line n2 insert: String color = Shirt.getColor();
  E. At line n1 insert: import clothing; At line n2 insert: String color = Shirt.getColor();
  D. At line n1 no changes required. At line n2 insert: String color = Shirt.getColor();

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  Explanation/Reference:

• Question 263:

  Given the code fragment:

  

  What is the result?

  A. 20
  B. 25
  C. 29
  D. Compilation fails
  E. AnArrayIndexOutOfBoundsException is thrown at runtime
  A. 20

• Question 264:

  Given:

  

  What is the result?

  A. Welcome Visit Count:0 Welcome Visit Count: 1
  B. Compilation fails at line n2.
  C. Compilation fails at line n1.
  D. Welcome Visit Count:0 Welcome Visit Count: 0
  C. Compilation fails at line n1.

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  Explanation/Reference:

  

• Question 265:

  Given the code fragment:

  

  Which code fragment, when inserted at line n1, enables the App class to print Equal?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  B. Option B

• Question 266:

  Which statement is true about the main() method?

  A. It is invoked by JRE
  B. It is a final method
  C. It returns true if it is executed successfully at run time
  D. It must be defined within a public class
  A. It is invoked by JRE

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  Explanation/Reference:

  Reference: https://www.quora.com/How-does-a-main-method-get-invoked-automatically-explain-it-in-brief

• Question 267:

  You are developing a banking module. You have developed a class named ccMask that has a maskcc method. Given the code fragment:

  

  You must ensure that the maskcc method returns a string that hides all digits of the credit card number except the four last digits (and the hyphens that separate each group of four digits).

  Which two code fragments should you use at line n1, independently, to achieve this requirement?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  B. Option B
  C. Option C

• Question 268:

  Given the fragments: Which line causes a compilation error?

  

  A. Line n1
  B. Line n2
  C. Line n3
  D. Line n4
  A. Line n1

• Question 269:

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

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

• Question 270:

  Given:

  

  and the code fragment:

  

  What is the result?

  A. AC
  B. BD
  C. BC
  D. AD
  C. BC

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  Explanation/Reference: