Write a program in Java to demonstrate and implement the concept of abstract classes.

Java provides one interface to sort objects of user defined types. What is the name of this interface type. Use an example to describe how to implement this interface.

In Java, a class can only inherit from one other ------- . A class can, however, extend many ----------.

Write a java program in which A class named Processor has  Two public attributes i.e. price and speed (float value like 2.8, 3.2 etc in MHz) A parameterized constructor to initialize attributes with user-defined valuesClass MainMemory consists of Two public attributes i.e. size (4,8 etc in Gb) and price A parameterized constructor to initialize attributes with user-defined valuesClass MotherBoard has  a private data member named compName of type string a no-argument or default constructor to initialize with default name intel setter function setCompName() to set the name of the computer getter function getCompName() to get the name of the computerClass Monitor has  a private data member named size (17, 19 inches) of type Int that represents size of screen A parameterized constructor to initialize attribute size. setter function setMonitorSize() to set the value to size. getter function getMointorSize() to get the size of screen. public remove() method, that will change the…