Design Patterns and Best Practices in Java

Examples

The following code shows how a simple print ASCII text can be enhanced to print the hex equivalent string for the input, besides the actual text:

package gof.structural.decorator;import java.util.stream.Collectors;publicclass Main{  publicstaticvoid main (String[] args) throws java.lang.Exception  {    final String text = "text";    final PrintText object = new PrintAsciiText();    final PrintText printer = new PrintTextHexDecorator(object);    object.print(text);    printer.print(text);  }}interface PrintText {  publicvoid print(String text);}PrintText is the component interface:class PrintAsciiText implements PrintText {  publicvoid print(String text)   {    System.out.println("Print ASCII: " + text);   }}

PrintASCIIText is the component to be decorated. ...