Author: Anonymous

Which of the following GUI objects generate(s) action events? I JComboBox II JRadioButton III JButton

A binary search is generally ____ a linear search.

Consider the permutations method from the textbook, which is intended to return all permutations of the word passed in as a parameter. How does the permutations method simplify its input for the recursive call? public static ArrayList permutations(String word) { ArrayList result = new ArrayList(); if (word.length() == 0) // line #1 { result.add(word); // line #2 return result; // line #3 } else { for (int i = 0; i < word.length(); i++) // line #4 { String shorter = word.substring(0, i) + word(substring(i + 1); // line #5 ArrayList shorterPermutations = permutations(shorter); // line #6 for (String s : shorterPermutations) // line #7 { result.add(word.charAt(i) + s); // line #8 } } return result; // line #9 } }

Which of the following arrays can be used in a call to the Arrays.sort method? I     Any array with primitive numeric data, such as int, double, … II    Arrays of String or numeric wrapper classes like, Integer, Double, … III   Any class that implements the Comparable interface

Consider the permutations method from the textbook, which is intended to return all permutations of the word passed in as a parameter. What special cases for the simplest values are used by the permutations method to terminate the recursion? public static ArrayList permutations(String word) { ArrayList result = new ArrayList(); if (word.length() == 0) // line #1 { result.add(word); // line #2 return result; // line #3 } else { for (int i = 0; i < word.length(); i++) // line #4 { String shorter = word.substring(0, i) + word(substring(i + 1); // line #5 ArrayList shorterPermutations = permutations(shorter); // line #6 for (String s : shorterPermutations) // line #7 { result.add(word.charAt(i) + s); // line #8 } } return result; // line #9 } }

When writing a method, which of the following statements about exception handling is true?

Which of the following statements about using the PrintWriter object is correct?

Which of the following arrays can be used in a call to the Arrays.sort method? I     Any array with primitive numeric data, such as int, double, … II    Arrays of String or numeric wrapper classes like, Integer, Double, … III   Any class that implements the Comparable interface

Suppose objects a and b are from a user-defined class that implements the Comparable interface.  What must be true about the return value of a.compareTo(b) for the compareTo method that this class implements?

When writing a method, which of the following statements about exception handling is true?