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The code below will not compile successfully unless the argument to the makeMenuItem method is final. Why not? public JMenuItem makeMenuItem(final String menuLabel) { JMenuItem mi = new JMenuItem(menuLabel); class MyMenuListener implements ActionListener { public void actionPerformed(ActionEvent e) { doSomethingElse(); System.out.println(menuLabel); } } mi.addActionListener(new MyMenuListener()); return mi; }

What is a class called that represents the most general entity in an inheritance hierarchy?

Which of the sorts in the textbook are based on the strategy of divide and conquer? I     quicksort II    mergesort III   insertion sort

Consider the following code snippet: Scanner in = new Scanner(. . .); int ageValue = in.nextInt(); If there is no integer number appearing next in the input, what will occur?

Insert the missing code in the following code fragment. This fragment is intended to read an input file named dataIn.txt. public static void main(String[] args) throws FileNotFoundException { String inputFileName = “dataIn.txt”; File inputFile = new File(inputFileName); Scanner in = _______________; . . . }

Insert the missing code in the following code fragment. This fragment is intended to read an input file named dataIn.txt. public static void main(String[] args) throws FileNotFoundException { String inputFileName = “dataIn.txt”; File inputFile = new File(inputFileName); Scanner in = _______________; . . . }

Complete the code for the calcPower recursive method shown below, which is intended to raise the base number passed into the method to the exponent power passed into the method: public static int calcPower(int baseNum, int exponent) { int answer = 0; if (exponent == 0) { _____________________ } else { answer = baseNum * calcPower (baseNum, exponent – 1); } return answer; }

Consider the following code snippet: Scanner in = new Scanner(. . .); int ageValue = in.nextInt(); If there is no integer number appearing next in the input, what will occur?

The code segment below is designed to add the elements in an array of integers. Select the expression needed to complete the code segment so that it calculates the elapsed running time. long start = System.currentTimeMillis(); int sum = 0; for (int k = 0; k < values.length; k++) { sum = sum + values[k]; } long runningTime = ____________________________;

Complete the code for the calcPower recursive method shown below, which is intended to raise the base number passed into the method to the exponent power passed into the method: public static int calcPower(int baseNum, int exponent) { int answer = 0; if (exponent == 0) { answer = 1; } else { _______________________________________ } return answer; }