int x = 98; char ch = (char)x; what is the value in ch?

1. b
2. A
3. B
4. 97

The default value of a boolean variable is:

1. False
2. 0
3. false
4. True

Consider the following program segment in which the statements are jumbled, choose the correct order of statements to swap two variables using the third variable.

void swap(int a, int b)
{	
  a = b;      → (1)
  b = t;      → (2)
  int t = 0;  → (3)
  t = a;      → (4)
}

1. (1) (2) (3) (4)
2. (3) (4) (1) (2)
3. (1) (3) (4) (2)
4. (2) (1) (4) (3)

Which of the following is a valid java keyword?

1. If
2. BOOLEAN
3. static
4. Switch