What does preferred size mean?
In industrial design, preferred numbers (also called preferred values or preferred series) are standard guidelines for choosing exact product dimensions within a given set of constraints. … They therefore help to minimize the number of different sizes that need to be manufactured or kept in stock.
Which method returns the preferred size of component?
The getPreferredSize() method returns the Dimension (width and height) for the preferred size of the component.
Which one is the smallest component in Java?
Answer: A token is the smallest element of a program that is meaningful to the compiler.
What is @component in Java?
A component is an object having a graphical representation that can be displayed on the screen and that can interact with the user. Examples of components are the buttons, checkboxes, and scrollbars of a typical graphical user interface.
What is setFocusable in Java?
setFocusable() is actually a method from the Component class in swing. public void setFocusable(boolean focusable) It lets the Component(in your case,JPanel which extends Component) to gain the power of getting focused.
What is setPreferredSize?
Generally, setPreferredSize() will lay out the components as expected if a layout manager is present; most layout managers work by getting the preferred (as well as minimum and maximum) sizes of their components, then using setSize() and setLocation() to position those components according to the layout’s rules.
What are the three main components of a Java class?
There are three major components of class in Java.
- Variable. Variable is a reserved memory location to hold a value. …
- Constructor. …
- Method.
What are the different AWT components in Java?
AWT Components
- Button (java. awt. …
- Checkboxes (java. awt. …
- Radio Buttons (java. awt. …
- Choice Buttons (java. awt. …
- Labels (java. awt. …
- TextFields (java.awt.TextField) Are areas where the user can enter text. …
- An Example Component Application.
Which class is used for defining the size of the AWT controls?
Dimension class is a part of Java AWT. It contains the height and width of a component in an integer as well as double precision.
Is get a keyword in Java?
The get method returns the value of the variable name . The set method takes a parameter ( newName ) and assigns it to the name variable. The this keyword is used to refer to the current object.
Are the smallest meaningful elements in Java?
The smallest meaningful element of a Java program is called a Token.
What is the use of @component?
@Component is an annotation that allows Spring to automatically detect our custom beans. In other words, without having to write any explicit code, Spring will: Scan our application for classes annotated with @Component. Instantiate them and inject any specified dependencies into them.
What is difference between @service and @component?
@Component is a generic stereotype for any Spring-managed component or bean. @Repository is a stereotype for the persistence layer. @Service is a stereotype for the service layer.