Which of the following is a valid java keyword?

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

The output of the following code is:

System.out.println(Math.ceil(6.4) + Math.floor(-1-2));

1. 3.0
2. 4
3. 3
4. 4.0

Which of the following is not true with regards to a switch statement?

1. checks for an equality between the input and the case labels
2. supports floating point constants
3. break is used to exit from the switch block
4. case labels are unique

Consider the array given below:

char ch[] = {'A','E','I','O', 'U'};

Write the output of the following statements:

System.out.println(ch[0]*2);:

1. 65
2. 130
3. 'A'
4. 0