What is the result?()
A.null B.zero C.some D.Compilation fails. E.An exception is thrown at runtime.
多项选择题Which two statements are true?()
A.Foo.beta() is a valid invocation of beta(). B.Foo.alpha() is a valid invocation of alpha(). C.Method beta() can directly call method alpha(). D.Method alpha() can directly call method beta().
单项选择题What is the result when the programmer attempts to compile the code and run it with the command java Converter 12?()
A.It is true that j==i. B.It is false that j==i. C.An exception is thrown at runtime. D.Compilation fails because of an error in line 13.
多项选择题and the command line: java -Dprop.custom=gobstopper Commander Which two, placed on line 13, will produce the output gobstopper?()
A.System.load("prop.custom"); B.System.getenv("prop.custom"); C.System.property("prop.custom); D.System.getProperty("prop.custom"); E.System.getProperties().getProperty("prop.custom");
单项选择题What is the result?()
A.6 B.7 C.10 D.11 E.Compilation fails. F.An exception is thrown at runtime.
单项选择题Which code, inserted at line 16, correctly retrieves a local instance of a Point object?()
A.Point p = Line.getPoint(); B.Line.Point p = Line.getPoint(); C.Point p = (new Line()).getPoint(); D.Line.Point p = (new Line()).getPoint();