A programmer must create a generic class MinMax and the type parameter of MinMax must implementComparable. Which implementation of MinMax will compile?()
A. B. C. D.
单项选择题Given: A programmer iterates over the TreeSet and prints the name of each Drink object. What is the result?()
A.Tea B.Coffee C.CoffeeTea D.Compilation fails
单项选择题Given: What is the result?()
A.Compilation fails. B.An exception is thrown at runtime. C.[608, 610, 612, 629] [608, 610] D.[608, 610, 612, 629] [608, 610, 629] E.[606, 608, 610, 612, 629] [608, 610]
A.[1, 2, 3, 5] B.[2, 1, 3, 5] C.[2, 5, 3, 1] D.[5, 3, 2, 1] E.[1, 3, 5, 2]
单项选择题Given: Which statement is true?()
A.Compilation fails because the hashCode method is not overridden. B.A HashSet could contain multiple Person objects with the same name. C.All Person objects will have the same hash code because the hashCode method is not overridden. D.If a HashSet contains more than one Person object with name="Fred", then removing another Person,also with name="Fred", will remove them all.
多项选择题WhichtwocodefragmentswillexecutethemethoddoStuff()inaseparatethread?()
A.new Thread() {public void run() { doStuff(); }}; B.new Thread() {public void start() { doStuff(); }}; C.new Thread() {public void start() { doStuff(); }}.run(); D.new Thread() {public void run() { doStuff(); }}.start(); E.new Thread(new Runnable() {public void run() { doStuff(); }}).start();