How do you change the thickness of a line in Java?
There is no predefined method to draw a thicker line in Java. Drawing lines with a gap of one pixel makes a thicker line.
What does setStroke do in Java?
awt. Stroke; it is set with the setStroke() method of a Graphics2D object. The Stroke attribute is used by Java 2D whenever it draws a line. Conceptually, the Stroke describes the pen or brush that is used to draw the line: it controls all line-drawing attributes, such as line width and dash pattern.
How do you change the stroke in Java?
To set the stroke attribute, you create a BasicStroke object and pass it into the Graphics2D setStroke method. A BasicStroke object holds information about the line width, join style, end-cap style, and dash style. This information is used when a Shape is rendered with the draw method.
What is graphics in Java?
The Graphics class is the abstract base class for all graphics contexts that allow an application to draw onto components that are realized on various devices, as well as onto off-screen images. A Graphics object encapsulates state information needed for the basic rendering operations that Java supports.
How do you draw a horizontal line in Java?
Java Applet | Draw a line using drawLine() method
This uses drawLine() method. Parameters: The drawLine method takes four arguments: x1 – It takes the first point’s x coordinate. y1 – It takes first point’s y coordinate.
How do you make a dashed line in Java?
The line would start off drawing 4 pixels (opaque), then skip 2 pixels (transparent), then draw 8 pixels (opaque), then skip 2 more pixels (transparent), then repeat for the remainder of the line. Then the line would simply alternate between opaque and transparent pixels of the specified value.
How do you draw a circle in Java?
Draw a Circle Using the drawOval() Function in Java
Now we call the drawOval() function and pass four arguments. The first two arguments are the x and y coordinates of the circle, while the last two arguments specify the width and the height of the circle to be drawn. At last, we extend JFrame from the javax.
How do you make a triangle in Java?
swing and drawPolygon to Draw a Triangle in Java. We use JFrame to create a top-level container, and then add a panel, which is our DrawATriangle class that extends JPanel , to it. As shown in the code below, we call the drawPolygon method inside the paintComponent to create a triangle on the Graphics object g .
How do you manipulate an image in Java?
Image Processing in Java | Set 1 (Read and Write)
- To read and write image file we have to import the File class [ import java. …
- To handle errors we use the IOException class [ import java. …
- To hold the image we create the BufferedImage object for that we use BufferedImage class [ import java.
How do you fill a polygon in Java?
To draw or fill a Polygon
Use the Graphics methods g. drawPolygon(p) or g. fillPolygon(p) to draw or fill a polygon, where p is the polygon.
How do you draw a polygon in Java?
We can draw Polygon in java applet by three ways :
- drawPolygon(int x, int y, int numberofpoints) : draws a polygon with the given set of x and y points. …
- drawPolygon(Polygon p) : draws a polygon with the given object of Polygon class.
What is an applet and its life cycle?
Applet life cycle defined as how the object created, started, stopped and destroyed during the entire execution of the application is said to applet life cycle. Applet life cycle has 5 methods init(), start(), stop(), aint() and destroy(). These methods are invoked by the browser to execute.
What is paintComponent method in Java?
By now you know that the paintComponent method is where all of your painting code should be placed. It is true that this method will be invoked when it is time to paint, but painting actually begins higher up the class hierarchy, with the paint method (defined by java. awt. Component .)