Definitions
The full name of the acronym JVM.
What is Java Virtual Machine?
private static int tagCount(XMLTree xml, String tag) {
int counter = 0;
if (_______) {
if (xml.label().equals(tag)) {
counter++;
}
for (inti = 0; i < xml.numberOfChildren(); i++) {
counter += tagCount(xml.child(i), tag);
}
}
return counter;
}
What is xml.isTag()?
SimpleWriter out=new SimpleWriter1L();
out.print("39"+3);
What is 393?
Some object that uses the new keyword to create a new instance.
What is a constructor?
private static int sumOfDigits(NaturalNumber n) {
int nDigits = 0;
int sum = 0;
if (!n.isZero()){
nDigits = n.divideBy10();
sum += ___________;
n.multiplyBy10(nDigits);
}
return sum;
}
What is nDigits + sumOfDigits(n);?
SimpleWriter outStream = new SimpleWriter1L();
double threeQuarters= 3/4;
outStream.println(threeQuarters);
What is 0.0;
When two or more methods have the same name, in which methods must differ in number and/or formal parameters.
What is overloading?
private static void generateElements(String str, Set<Character> charSet) {
if(________){
for (int i = 0; i < str.length(); i++){
char c = str.charAt(i);
charSet.add(c);
}
}
}
What is !charSet.size() == 0?
The amount of times this loop runs.
int x = 8;
while ((x / 3) != 2) { x = x - 1; }
What is 0?
The objects in the program that need to do something in response to the events for a particular subject.
What is an observer?
/**
* @updates this, q
* _______
* this * q = #this * #q
*/
while (q.length() > 0) {
T x = q.dequeue();
this.enqueue(x);
}
What is @maintains?
The values for num1 and num2.
private static int m(int x, int y) {
y = x;
x = 0;
return y;
}
int num1 = 4, num 2 = 9;
num2 = m (num1, num2);
num1 = 4;
num2 = 4;
A single path of sequential code executing one step at a time.
What is a thread?
private static void getPriceMap(String fileName,
Map<String, Integer> priceMap) {
SimpleReader in = newSimpleReader1L(fileName);
while (______) {
String temp = in.nextLine();
int indexOfComma = temp.indexOf(',');
String food = __________;
String priceString = temp.substring(indexOfComma + 1);
Integer price = Integer.parseInt(priceString);
priceMap.add(food, price);
}
in.close();
}
What is !in.atEOS() & temp.substring(0, indexOfComma)?
The nextDouble( ) method of r, a variable of type Random, returns a double in a range of [0,1). Which of these expressions would you use to create a random number in the range of [-3,3)?
What is (r.nextDouble( ) - 0.5) * 6.0?