Java

Question 6

Invoking _____ returns the first element in an ArrayList x.

x.get(1)

x.get()

x.get(0)

x.first()

Question 7

The maximum number of radio buttons that can be selected within a ButtonGroup is

1.

2.

5.

all.

Question 8

Analyze the following code. public class Test { int x; public Test(String t) { System.out.println("Test"); } public static void main(String[ ] args) { Test test = null; System.out.println(test.x); } }

The program has a compile error because x has not been initialized.

The program has a runtime NullPointerException because test is null while executing test.x.

The program has a compile error because test is not initialized.

The program has a compile error because Test does not have a default constructor.

Question 9

Which statement creates an ArrayList that holds the class type Employee?

new ArrayList[ Employee ].

ArrayList.Employee().

new ArrayList().

new Employee.ArrayList[].

Question 10

A string with delimiters can be parsed into separate fields using the _____ class.

StringParse

ParseString

StringTokenizer

TokenizeString