What is a Graphics object?
The Graphics object represents a GDI+ drawing surface, and is the object that is used to create graphical images. … Using the Graphics object to draw lines and shapes, render text, or display and manipulate images.
How use Graphics object in Java?
B. 1 Creating graphics
- Create a JFrame object, which is the window that will contain the canvas.
- Create a Drawing object (which is the canvas), set its width and height, and add it to the frame.
- Pack the frame (resize it) to fit the canvas, and display it on the screen.
What is graphic context in Java?
To do any drawing at all in Java, you need a graphics context. A graphics context is an object belonging to the class, Graphics. Instance methods are provided in this class for drawing shapes, text, and images. Any given Graphics object can draw to only one location.
What is Java Graphics 2D?
In computing, Java 2D is an API for drawing two-dimensional graphics using the Java programming language. Every Java 2D drawing operation can ultimately be treated as filling a shape using a paint and compositing the result onto the screen.
Is G actually a Graphics object?
The Graphics object g for the component is automatically provided by the system. The user overrides paint(g) to actually draw something on the component. … The newer Java graphics actually use a class called Graphics2D, which extends Graphics, and that is the one actually passed to the paint method.
What is fillOval in Java?
public abstract void fillOval(int x, int y, int width, int height): is used to fill oval with the default color and specified width and height. public abstract void drawLine(int x1, int y1, int x2, int y2): is used to draw line between the points(x1, y1) and (x2, y2).
What is GUI in Java?
GUI stands for Graphical User Interface, a term used not only in Java but in all programming languages that support the development of GUIs. … It is made up of graphical components (e.g., buttons, labels, windows) through which the user can interact with the page or application.
What is drawString in Java?
The Graphics class provides three methods that draw text on a component or an image. The drawString() method, shown below, takes as parameters an instance of the String class containing the text to be drawn, and two integer values specifying the coordinates where the text should start.
What is a JFrame in Java?
A frame, implemented as an instance of the JFrame class, is a window that has decorations such as a border, a title, and supports button components that close or iconify the window. Applications with a GUI usually include at least one frame. Applets sometimes use frames, as well.
What is the purpose of a Graphics context?
A graphics context represents a drawing destination. It contains drawing parameters and all device-specific information that the drawing system needs to perform any subsequent drawing commands.