An ordered list
a. Bulleted list
b. Numbered list
c. Sequential list
B. Numbered list
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The collections framework provides various __________ collection interfaces from which the programmer can quickly "flesh out" complete customized implementations.
a. abstract. b. concrete. c. structured. d. unstructured.
The async and await mechanism does not create new threads. The method that you call to start an asynchronous task on which you ________ the results is responsible for creating any threads that are used to perform the asynchronous task.
a) await b) process c) discard d) save
If the following is from the method section of a UML diagram, which of the statements below is true?
+ add(object2:Stock) : Stock a. This is a private method named add that accepts and returns objects of the Stock class. b. This is a private method named Stock that adds two objects. c. This is a public method named add that accepts and returns references to objects in the Stock class. d. This is a public method named Stock that adds two objects.
Analyze the following code.
``` class Test { public static void main(String[] args) { StringBuilder strBuf = new StringBuilder(4); strBuf.append("ABCDE"); System.out.println("What's strBuf.charAt(5)? " + strBuf.charAt(5)); } }``` a. The program has a compile error because you cannot specify initial capacity in the StringBuilder constructor. b. The program has a runtime error because because the buffer's capacity is 4, but five characters "ABCDE" are appended into the buffer. c. The program has a runtime error because the length of the string in the buffer is 5 after "ABCDE" is appended into the buffer. Therefore, strBuf.charAt(5) is out of range. d. The program compiles and runs fine.