Write a Java program segment to find the sum of the first n natural numbers using a for loop.

Write a Java program segment to check whether a given integer n is prime.

How many times does the body of this loop execute: for (int i = 10; i > 0; i -= 3) { … }

State three differences between a while loop and a do-while loop.

Distinguish between the break and the continue statements.

Explain the ternary operator in Java and rewrite "if (a > b) max = a; else max = b;" using it.

What is the output of: String s = "Examination"; System.out.println(s.length() + " " + s.substring(0, 4) + " " + s.toUpperCase().charAt(2));