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Java Programming - Language Fundamentals

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Exercise

"Time and tide wait for none."
- Alexander Pope
11. 

Which one is a valid declaration of a boolean?

A. boolean b1 = 0;
B. boolean b2 = 'false';
C. boolean b3 = false;
D. boolean b4 = Boolean.false();
E. boolean b5 = no;

12. 

Which three are valid declarations of a float?

  1. float f1 = -343;
  2. float f2 = 3.14;
  3. float f3 = 0x12345;
  4. float f4 = 42e7;
  5. float f5 = 2001.0D;
  6. float f6 = 2.81F;

A. 1, 2, 4B. 2, 3, 5
C. 1, 3, 6D. 2, 4, 6

13. 

Which is a valid declarations of a String?

A. String s1 = null;
B. String s2 = 'null';
C. String s3 = (String) 'abc';
D. String s4 = (String) '\ufeed';

14. 

What is the numerical range of a char?

A. -128 to 127B. -(215) to (215) - 1
C. 0 to 32767D. 0 to 65535




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