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The RoundRectangle2D class defines a rectangle with rounded corners defined by a location (x,y), dimension (w x h), and the width and height of an arc with which to round the corners. The RoundRectangle2D.Double class constructs a RoundRectangle2D from the specified values in double, including the location, width and the arch of the round rectangle. […]
The code snippet below show you how to use the Graphics2D class the draw a rectangle. You can see the snippet in the paintComponent(Graphics g) method defined in the anonymous JPanel object. To draw a rectangle we use the Rectangle2D.Double static-inner class. The constructor of this class accept the information about the rectangle x, y […]
The following code snippet show you how to draw a simple line using Graphics2D.draw() method. This method take a parameter that implements the java.awt.Shape interface. To draw a line we can use the Line2D.Double static-inner class. This class constructor takes four integers values that represent the start (x1, y1) and end (x2, y2) coordinate of […]
To wire or inject a null value into a bean we can use the <null> element. The configuration below show you how to do it in the Spring configuration file. You might need to wire a null value for instance when you want to override a value that was autowired into a bean. As you […]
This time we will demonstrate how to inject a java.util.Properties. This class store a key-value pairs of data where the key and the values are both in string. You can use the <props> element to wire a property collections. The bean we use in this example is taken from the previous example How do I […]
In this example you will see how to wire map collections. For this purpose we can use the <map> element in the Spring configuration file. This element declares the java.util.Map. We will reuse the bean that we use in the previous example How do I inject collections using list element in Spring?. The <map> element […]
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