Posts Tagged ‘Java’

LANGUAGE: Java CHALLENGE: Clicking a button results in the creation of an ____________________ object to represent the button click.

LANGUAGE: Java CHALLENGE: To ensure that a Java GUI application exits properly when its main window is closed, simply use this statement

LANGUAGE: Java CHALLENGE: The method needed to arrange for an object to be notified when a window’s close-window button has been clicked is

LANGUAGE: Java CHALLENGE: A __________________ is a component that displays text in a GUI application or applet.

LANGUAGE: Java CHALLENGE: A _________________ is a component that provides a box for writing one line of text in a GUI application or applet

LANGUAGE: Java CHALLENGE: A ___________________ is a component that provides a box for writing multi-line text in a GUI application or applet

LANGUAGE: Java CHALLENGE: The package required by both Java GUI applications and applets the ______________ package.

LANGUAGE: Java CHALLENGE: The import statement needed to use multi-line text box components in applets or GUI applications is

LANGUAGE: JAVA CHALLENGE: Write a class named TestScores. The class constructor should accept an array of test scores as its argument. The class should have a method that returns the average of the test scores. If any test score in the array is negative or greater than 100, the class should throw an IllegalArgumentException. Demonstrate the…

LANGUAGE: JAVA CHALLENGE: The argument to a square root method (sqrt) in general should not be negative. Write the definition of a class named SQRTException whose objects are created by specifying the original negative value that caused the problem in the first place: new SQRTException(originalArgument). The associated message for this Exception should be “Bad argument to…

LANGUAGE: Java CHALLENGE: Assume that success is a variable of type boolean that has been declared. Assume that processor refers to an object that provides a void method named process that takes no arguments. As it happens, the process method may throw one of several exceptions. Write some code that invokes the process method provided…

LANGUAGE: Java CHALLENGE: Assume the existence of an interface, GUIComponent with the following methods: – open and close: no parameters, returns boolean – move and resize: accepts two integer parameters and returns void Define a class, Window, that implements the GUIComponent interface, and has the following members: – width, height, xPos, and yPos integer instance…