tag in markup from our java file “AddHtmlPanel”. Here AddHtmlPanel extends Panel, so it also becomes a panel and we can add directly the Label here.

AddHtmlPanel.java

public class AddHtmlPanel extends Panel {
       
       /*
        * Constructor here
        */
       public AddHtmlPanel (String id) {
           super(id);
       
           //Saved the dynamic html code in a String Variable "dynamicHtml " here by calling the createDynamicHtml() method
           String dynamicHtml = createDynamicHtml("divIdName");
        
           /*
            * created label here for adding dynamic html code as a string. Constructor of Label contains 
            * two parameters, first parameter is "wicket:id" by which label is identified in markup.
            * Second parameter is the String variable "dynamicHtml " which contains our dynamic html code as a string.
            */
           Label divLabel = new Label("divLabel",dynamicHtml );
       
           //Setted EscapeModelStrings False for the label
           divLabel.setEscapeModelStrings(false);
       
           //added label to panel here
           add(divLabel);    
         }

          /*
            * method which returns <div> tag content as a string required to add in html file
             */
          public String createDynamicHtml(String div_id) {
           
           //created a instance named "divSB " of StringBuilder here
           StringBuilder divSB = new StringBuilder(512);
           
           /*
            *appended dynamic html code to divscriptSB instance of StringBuilder
            */
           divSB.append("<div id=\"");
           divSB.append(div_id);
           divSB.append("\"></div>");
           
           //return StringBuilder instance as a String which contains our dynamic html code
           return divSB.toString();    
       }
}

AddHtmlPanel.html

<wicket:panel>

        <span wicket:id="divLabel"></span>

    </wicket:panel>