Tag: programming languages

Assume that there is a file called secure.txt, located at /WEB-INF/securefiles, whose contents are "Password=WebCert." What statements are false about the result of compiling and running the following code? 11 public class CodeTestServlet extends HttpServlet { 12 protected void doGet(HttpServletRequest request, 13 HttpServletResponse response) throws IOException { 14 ServletContext sc = getServletContext(); 15 InputStream is = sc.getResourceAsStream("/WEB-" + 16 "INF/securefiles/secure.txt"); 17 BufferedReader br = new BufferedReader(new InputStreamReader(is)); 18 System.out.println(br.readLine()); 19 } 20 }

Which of the following servlet methods can return null?

Is Array operations are faster than Vector.

Does File class have any method to read or write content in a file?

Java Polymorphism

Final variables declared without initialization can be initialized in static initializer ( static final var) or in constructor( final var). True/False?

Is the following statement correct: char ch = 'd'; if(ch < 32.00){ }

If there is an exception in finalize method, will the object be garbage collected?

If you have reference variable of parent class type and you assign a child class object to that variable and invoke static method. Which method will be invoked? Parent/Child.

Can we declare derived class first and then base class in java?