Baby teeth also are primers for teaching your child good oral care habits. It is important to take care of your child's primary teeth. Even though primary teeth last only a few years, decay, cavities and infection can take its toll and may require expensive treatment to repair.
Here Integer is a name of a class in java.lang package and parseInt() is a method of Integer class which converts String to integer. If we want to enter a integer in a method or class using keyboard, then we have to use a method parseInt(). In this program we are going to calculate a area of a rectangle by using two classes named Rectangle and EnterValuesFromKeyboard. In the first class we have used two methods, show(int x, int y) and calculate().
1 A nested class that is static does not require an object of its top-level class and does not implicitly have a reference to an object of the top-level class. 2  When the user presses Enter in a JTextField or JPasswordField, the GUI component generates an ActionEvent (package java.awt.event). The GUI component with which the user interacts is the event source. 2  An ActionEvent object contains information about the event that just occurred, such as the event source and the text in the text field. 3  ActionEvent method getSource returns a reference to the event source.