1Z0-803 Free Practice Test

Which three are valid types for switch?

1. A. int
2. B. float
3. C. double
4. D. integer
5. E. String
6. F. Float

Correct Answer: ADE
A switch works with the byte, short, char, and int primitive data types. It also works with enumerated types theString class, and a few special classes that wrap certain primitive types: Character, Byte, Short, and Integer.

Given the fragment:
<>

1. A. 13480.0
2. B. 13480.02
3. C. Compilation fails
4. D. An exception is thrown at runtime

Correct Answer: A

Given the code fragment:
<>

1. A. Zero
2. B. Once
3. C. Twice
4. D. Thrice
5. E. It is not printed because compilation fails

Correct Answer: B
The outer loop will run three times, one time each for theelements in table. The break statement breaks the inner loop immediately each time.
2 will be printed once only.
Note: If the line int ii = 0; is missing the program would not compile.

Given:
< ><>>>< >

1. A. Option A
2. B. Option B
3. C. Option C
4. D. Option D
5. E. Option E

Correct Answer: D

Which two may precede the word ‘class’ in a class declaration?

1. A. local
2. B. public
3. C. static
4. D. volatile
5. E. synchronized

Correct Answer: BC
B: A class can be declared as public or private.
C: You can declare two kinds of classes: top-level classes and inner classes.
You define an inner class within a top-level class.Depending on how it is defined, an inner
class can be one of the following four types:Anonymous, Local, Member and Nested top- level.
A nested top-level class is a member classes with astaticmodifier. A nested top-level class is just like any other top-level class except that it is declared within another class or interface. Nested top-level classes are typically used as a convenient way to group related classes without creating a new package.
The following is an example:
public class Main { staticclass Killer {