A list is a collection that ____.

Insert the missing code in the following code fragment. This fragment is intended to read characters from a text file. Scanner in = new Scanner(. . .); in.useDelimiter(“”); while (in.hasNext()) { char ch = ____________; System.out.println(ch); }

Consider the following code snippet: class MouseClickedListener implements ActionListener { public void mouseClicked(MouseEvent event) { int x = event.getX(); int y = event.getY(); component.moveTo(x,y); } } What is wrong with this code?

Which problem-solving technique examines partial solutions, abandons unsuitable ones, and returns to consider other candidate solutions.

What is the purpose of the throw statement?

When using a combo box, the _______ displays the name of the current selection.

Insert the missing code in the following code fragment. This fragment is intended to read a file named dataIn.txt and write to a file named dataOut.txt. public static void main(String[] args) throws FileNotFoundException { String inputFileName = “dataIn.txt”; String outputFileName = “dataOut.txt”; File inputFile = new File(inputFileName); Scanner in = new Scanner(inputFile); PrintWriter out = _____________; . . . }

Consider the method powerOfTwo shown below: public boolean powerOfTwo(int n) { if (n == 1) // line #1 { return true; } else if (n % 2 == 1) // line #2 { return false; } else { return powerOfTwo(n / 2); // line #3 } } How many recursive calls are made from the original call powerOfTwo(63) (not including the original call)?

Consider the following code snippet: public class Vehicle { . . . public void setVehicleClass(double numberAxles) { . . . } } public class Motorcycle extends Vehicle { . . . public void setModelName(String model) { . . . } public void setVehicleClass(double numberAxles) { . . . } } Which of the following statements is NOT correct?

Which of the following statements about checked and unchecked exceptions is NOT true?