Which of the following describes the Singleton pattern correctly?

Which statement is/are correct about an rmic compiler? 1. It generates stub and skeleton class files using the Java Remote Method Protocol. 2. It generates stub and tie class files for remote objects by using the Internet Inter-Orb protocol (IIOP).

Which is not required while you are developing a bean?

Which design pattern is used to decouple presentation from core data access functionality in JSP?

Choose the right syntax for a preparedStatement using ? as a placeholder for values namely CUSTOMER_ID,PRICE to be substituted while inserting values in the table ORDER: PreparedStatement ps=con.prepareStatement('INSERT INTO ORDER (CUSTOMER_ID ,PRICE) VALUES(?,?)');

Which classes/set of classes can illustrate polymorphism in the given code? abstract class student { public : int marks; calc_grade(); } class topper:public student { public : calc_grade() { return 10; } }; class average:public student { public : calc_grade() { return 20; } }; class failed{ int marks;};

The methods for modifying element in the ________ class are synchronized.

The method header of the equals() method within the string class is ____.

Predefined types such as int, double, and char are ____ types.

One or more objects may be created from a(n)________.

Java uses ________ to reference the current object.