What is Alpha Value / Alpha Value?
In the context of Java imaging, the alpha value indicates the amount of transparency in an image. Java alpha channels contain transparency information for each image. Alpha values range from 0.0 to 1.0 inclusive, with 0.0 being completely transparent and 1.0 being completely opaque. Transparency effects can be achieved by using alpha values.
Transparency is the physical property of a material that indicates the amount of light that can pass through the material. Glass is a good example of a transparent material. Objects that do not let light through are opaque. In Java imaging, the source image disappears when the alpha value is 0.0, and it is completely opaque when the alpha value is 1.0. Thus, any alpha value between 0.0 and 1.0 can be selected for different degrees of transparency. The AlphaComposite class uses alpha values to create show-through imaging effects.
The following is an example of an alpha value: Have circle A specified as the destination and circle B as the source. When the circle B is superimposed on the circle A, the circle of the circle A represented by the circle B can be varied by adjusting the alpha value of the circle B. When circle B has an alpha value of 1, it is opaque. Therefore, circle A cannot be seen through B. When circle B has the value 0, it is transparent and circle A is fully visible.