1. Explain the difference between a Compiler and Interpreter?
2. Explain the structure of a Java Program with the help of an example?
3. Identify the errors in the following Java program and rewrite the program without errors

1. public class JavaDemo {

public static main(String[] args) {

System.out.println("Hello World Example)

}

}

2. public static void main(String[] args)

string nn="AMAIUB"

int year==2018;

system.out.println("University Name :"+NN)

system.out.println("Current Year :"year);

}

}

Write a java program that assigns 1.5, 22.4, 0.333 and 1.123 to the variables a, b, c and d respectively. Next compute their sum. Assign the result to a variable named sum. Next compute the average of the values in these variables. Assign the result to a variable named average. Display the values in sum and average with appropriate labels