// Write a Java program to create an interface Searchable with a method search(String keyword) that searches for a given keyword in a text document. Create two classes Document and WebPage that implement the Searchable interface and provide their own implementations of the search() method. (Program 9)
              // Created by Aryan , Rollno 7070
              // Note : In order to compile and run this program , rename it from "7070Interface9.java" to "Interface9.java"
              
              // Interface Searchable
              interface Searchable {
                  void search(String keyword);
              }
              
              // Class Document implementing Searchable
              class Document implements Searchable {
                  private String content;
              
                  // Constructor for Document
                  public Document(String content) {
                      this.content = content;
                  }
              
                  // Implementation of the search method for Document
                  @Override
                  public void search(String keyword) {
                      if (content.contains(keyword)) {
                          System.out.println("Keyword '" + keyword + "' found in the document.");
                      } else {
                          System.out.println("Keyword '" + keyword + "' not found in the document.");
                      }
                  }
              }
              
              // Class WebPage implementing Searchable
              class WebPage implements Searchable {
                  private String url;
                  private String htmlContent;
              
                  // Constructor for WebPage
                  public WebPage(String url, String htmlContent) {
                      this.url = url;
                      this.htmlContent = htmlContent;
                  }
              
                  // Implementation of the search method for WebPage
                  @Override
                  public void search(String keyword) {
                      if (htmlContent.contains(keyword)) {
                          System.out.println("Keyword '" + keyword + "' found on the web page at " + url + ".");
                      } else {
                          System.out.println("Keyword '" + keyword + "' not found on the web page at " + url + ".");
                      }
                  }
              }
              
              // Main class for testing
              public class Interface9 {
                  public static void main(String[] args) {
                      // Create instances of Document and WebPage
                      Document document = new Document("This is a sample document. Java is a programming language.");
                      WebPage webPage = new WebPage("http://example.com", "Java programming on the web page");
              
                      // Test the search method for Document
                      System.out.println("Searching in the document:");
                      document.search("Java");
                      document.search("Python");
                      System.out.println();
              
                      // Test the search method for WebPage
                      System.out.println("Searching on the web page:");
                      webPage.search("Java");
                      webPage.search("JavaScript");
                  }
              }